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Gerald R. Ford-class aircraft carrier

The Gerald R. Ford-class nuclear-powered aircraft carriers are currently being constructed for the United States Navy, which intends to eventually acquire ten of these ships in order to replace current carriers on a one-for-one basis, starting with the lead ship of her class, Gerald R. Ford (CVN-78), replacing Enterprise (CVN-65), and later the Nimitz-class carriers. The new vessels have a hull similar to the Nimitz class, but they carry technologies since developed with the CVN(X)/CVN-21 program,[N 1] such as the Electromagnetic Aircraft Launch System (EMALS), as well as other design features intended to improve efficiency and reduce operating costs, including sailing with smaller crews.[15] This class of aircraft carriers is named after former U.S. President Gerald R. Ford.[16] CVN-78 was procured in 2008 and commissioned into service on 22 July 2017. The second ship of the class, John F. Kennedy (CVN-79), is scheduled to enter service in 2025.

Gerald R. Ford-class aircraft carrier
USS Gerald R. Ford underway in April 2017
Class overview
NameGerald R. Ford-class aircraft carrier
BuildersNewport News Shipbuilding
Operators United States Navy
Preceded byNimitz class
Cost
  • Program cost: US$37.30 billion (FY2018)[1]
  • Unit cost: US$12.998 billion (FY2018)[1]
In service2017–present
Planned10[2][3]
On order1
Building2
Completed1
Active1
General characteristics
TypeAircraft carrier
DisplacementAbout 100,000 long tons (100,000 tonnes) (full load)[5]
Length1,092 ft (333 m)[6] – 1,106 ft (337 m)[7]
Beam
  • 256 ft (78 m) (flight deck)[8]
  • 134 ft (41 m) (waterline)[8]
Height250 feet (76 m)[4]
Draft39 ft (12 m)[9]
Decks25
Installed powerTwo Bechtel A1B PWR nuclear reactors, HEU 93.5%[13][14]
PropulsionFour shafts
SpeedIn excess of 30 knots (56 km/h; 35 mph)[6]
RangeUnlimited
Endurance50-year service life
Complement
  • 508 officers
  • 3,789 enlisted[9]
CrewAbout 2,600[10]
Sensors and
processing systems
Electronic warfare
& decoys
Armament
Aircraft carried75+[8]
Aviation facilities1,092 ft × 252 ft (333 m × 77 m) flight deck

Design features edit

Carriers of the Gerald R. Ford class have:[1]

The biggest visible difference from earlier supercarriers is the more aft location of the island (superstructure).[25] The Gerald R. Ford-class carriers will have a reduced whole-life cost due in part to reduced crew size.[18] These ships are intended to sustain 160 sorties per day for 30-plus days, with a surge capability of 270 sorties per day.[26][27] Director of Operational Testing Michael Gilmore has criticized the assumptions used in these forecasts as unrealistic and has indicated sortie rates similar to the 120/240 per day of the Nimitz class would be acceptable.[27][28]

Development edit

 
Gerald R. Ford arrived at Naval Station Norfolk after seven days of builders trials in April 2017.

The current Nimitz-class aircraft carriers in US naval service have been part of United States power projection strategy since Nimitz was commissioned in 1975. Displacing about 100,000 tons when fully loaded, a Nimitz-class carrier can steam in excess of 30 knots (56 km/h; 35 mph), cruise without resupply for 90 days, and launch aircraft to strike targets hundreds of miles away.[29] The endurance of the Nimitz class is exemplified by USS Theodore Roosevelt, which spent 159 days underway during Operation Enduring Freedom without visiting a port or being refueled.[30]

The Nimitz design has accommodated many new technologies over the decades, but it has limited ability to support the most recent technical advances. As a 2005 Rand report said, "The biggest problems facing the Nimitz class are the limited electrical power generation capability and the upgrade-driven increase in ship weight and erosion of the center-of-gravity margin needed to maintain ship stability."[31]

With these constraints in mind, the US Navy developed what was initially known as the CVN-21 program, which evolved into CVN-78, Gerald R. Ford. Improvements were made through developing technologies and more efficient design. Major design changes include a larger flight deck, improvements in weapons and material handling, a new propulsion plant design that requires fewer people to operate and maintain, and a new, smaller island that has been pushed aft. Technological advances in electromagnetics have led to the development of an Electromagnetic Aircraft Launch System (EMALS) and an Advanced Arresting Gear (AAG). An integrated warfare system, the Ship Self-Defense System (SSDS), has been developed to allow the ship to more easily take on new missions. The new Dual Band Radar (DBR) combines S-band and X-band radar.[32]

These advances will allow the new Gerald R. Ford-class carriers to launch 25% more sorties, generate triple the electrical power with improved efficiency, and offer crew quality-of-life improvements.[8][15]

Flight deck edit

 
Aerial view of Gerald R. Ford (CVN-78, bottom) alongside USS Harry S. Truman (CVN-75, top), a ship of the previous Nimitz class

Catapult No. 4 on the Nimitz class cannot launch fully loaded aircraft because of low wing clearance along the edge of the flight deck.[33]

The movement of weapons from storage and assembly to the aircraft on the flight deck has also been streamlined and accelerated. Ordnance will be lifted to the centralized rearming location via higher-capacity weapons elevators that use linear motors.[34] These elevators are located so that ordnance need not cross any areas of aircraft movement, thereby reducing traffic problems in the hangars and on the flight deck. In 2008, Rear Admiral Dennis M. Dwyer said these changes will make it hypothetically possible to rearm the airplanes in "minutes instead of hours".[35]

Power generation edit

The new Bechtel A1B reactor for the Gerald R. Ford class is smaller and simpler, requires fewer crew, and yet is far more powerful than the Nimitz-class A4W reactor. Two reactors will be installed on each Gerald R. Ford-class carrier, providing a power generation capacity at least 25% greater than the 550 MW (thermal) of the two A4W reactors in a Nimitz-class carrier.[36] The portion of thermal power allotted to electrical generation will be tripled.[37]

The propulsion and power plant of the Nimitz-class carriers were designed in the 1960s, when onboard technologies required less electrical power. "New technologies added to the Nimitz-class ships have generated increased demands for electricity; the current base load leaves little margin to meet expanding demands for power."[38]

The Gerald R. Ford-class ships convert steam into power by piping it to four main turbine generators (MTG) to generate electricity for major ship systems, and the new electromagnetic catapults.[39][40] The Gerald R. Ford-class ships use steam turbines for propulsion.[40]

A larger power output is a major component of the integrated warfare system. Engineers took extra steps to ensure that integrating unforeseen technological advances onto a Gerald R. Ford-class aircraft carrier would be possible. The Navy expects the Gerald R. Ford class will be part of the fleet for 90 years, until the year 2105, which means that the class must successfully accept new technology over the decades. Only half of the electric power generation capacity is used by currently planned systems, with half remaining available for future technologies.[41]

Electromagnetic Aircraft Launch System edit

 
A drawing of the EMALS's linear induction motor

The Electromagnetic Aircraft Launch System (EMALS) launches aircraft by means of a catapult employing a linear induction motor rather than the steam piston used on the Nimitz class. The EMALS accelerates aircraft more smoothly, putting less stress on their airframes. The EMALS also weighs less, is expected to cost less and require less maintenance, and can launch both heavier and lighter aircraft than a steam piston-driven system. It also reduces the carrier's requirement for fresh water, thus reducing the demand for energy-intensive desalination.[citation needed]

Advanced Arresting Gear landing system edit

Electromagnets are also being used in the new Advanced Arresting Gear (AAG) system. The current system relies on hydraulics to slow and stop a landing aircraft. While the hydraulic system is effective, as demonstrated by more than fifty years of implementation, the AAG system offers a number of improvements. The current[needs update] system is unable to capture unmanned aerial vehicles (UAVs) without damaging them due to extreme stresses on the airframe. UAVs do not have the necessary mass to drive the large hydraulic piston used to trap heavier, manned airplanes. By using electromagnetics, the energy absorption is controlled by a turbo-electric engine. This makes the trap smoother and reduces shock on airframes. Even though the system will look the same from the flight deck as its predecessor, it will be more flexible, safe, and reliable, and will require less maintenance and manning.[42]

Sensors and self-defense systems edit

 
Diagram of AN/SPY-3 vertical electronic pencil beam radar conex projections
 
An Evolved SeaSparrow Missile launching

Another addition to the Gerald R. Ford class is an integrated active electronically scanned array search and tracking radar system. The dual-band radar (DBR) was being developed by Raytheon, for both the Zumwalt-class guided missile destroyers and the Gerald R. Ford-class aircraft carriers. The island can be kept smaller by replacing six to ten radar antennas with a single six-faced radar. The DBR works by combining the X band AN/SPY-3 multifunction radar with the S band AN/SPY-4 Volume Search Radar (VSR) emitters, distributed into three phased arrays.[43] The S-band radar was later deleted from the Zumwalt-class destroyers to save money.[21]

The three faces dedicated to the X-band radar handle low-altitude tracking and radar illumination, while the three S-band faces handle target search and tracking regardless of weather. "Operating simultaneously over two electromagnetic frequency ranges, the DBR marks the first time this functionality has been achieved using two frequencies coordinated by a single resource manager."[32]

This new system has no moving parts, therefore minimizing maintenance and manning requirements for operation. The AN/SPY-3 consists of three active arrays and the Receiver/Exciter (REX) cabinets above-decks and the Signal and Data Processor (SDP) subsystem below-decks. The VSR has a similar architecture, with the beamforming and narrowband down-conversion functionality occurring in two additional cabinets per array. A central controller (the resource manager) resides in the Data Processor (DP). The DBR is the first radar system that uses a central controller and two active-array radars operating at different frequencies. The DBR gets its power from the Common Array Power System (CAPS), which comprises Power Conversion Units (PCUs) and Power Distribution Units (PDUs). The DBR is cooled via a closed-loop cooling system called the Common Array Cooling System (CACS).[44]

The Enterprise Air Surveillance Radar (EASR) is a new design surveillance radar that is to be installed in the second Gerald R. Ford-class aircraft carrier, John F. Kennedy (CVN-79), in lieu of the Dual Band radar. The America-class amphibious assault ships starting with LHA-8 and the planned LX(R) will also have this radar.[45] The EASR suite's initial per-unit cost will be about $180 million less than the DBR, for which the estimate is about $500 million.[46]

Possible upgrades edit

 
AN/SEQ-3 laser prototype during an on-board test

Future defense systems, such as free-electron laser directed-energy weapons, electric armor, and tracking systems will require more power. "Only half of the electrical power-generation capability on CVN-78 is needed to run currently planned systems, including EMALS. CVN-78 will thus have the power reserves that the Nimitz class lacks to run lasers and electric armor."[41] The addition of new technologies, power systems, design layout, and better control systems results in an increased sortie rate of 25% over the Nimitz class and a 25% reduction in manpower required to operate.[47]

Waste management technology will be deployed on Gerald R. Ford. Co-developed with the Carderock Division of the Naval Surface Warfare Center, PyroGenesis Canada Inc., was in 2008 awarded the contract to outfit the ship with a Plasma Arc Waste Destruction System (PAWDS). This compact system will treat all combustible solid waste generated on board the ship. After having completed factory acceptance testing in Montreal, the system was scheduled to be shipped to the Huntington Ingalls shipyard in late 2011 for installation on the carrier.[48]

The Navy is developing a free-electron laser (FEL) to defend against cruise missiles and small-boat swarms.[49][50][51]

3D computer-aided design edit

Newport News Shipbuilding used a full-scale three-dimensional product model developed in Dassault Systèmes CATIA V5 to design and plan the construction of the Gerald R. Ford class of aircraft carriers.[52]

The CVN 78 class was designed to have better weapons movement paths, largely eliminating horizontal movements within the ship. Current plans call for advanced weapons elevators to move from storage areas to dedicated weapons handling areas. Sailors would use motorized carts to move the weapons from storage to the elevators at different levels of the weapons magazines. Linear motors are being considered for the advanced weapons elevators. The elevators will also be relocated such that they will not impede aircraft operations on the flight deck. The redesign of the weapons movement paths and the location of the weapons elevators on the flight deck will reduce manpower and contribute to a much higher sortie generation rate.[53]

Planned aircraft complement edit

The Gerald R. Ford class is designed to accommodate the new Joint Strike Fighter carrier variant aircraft (F-35C), but aircraft development and testing delays have affected integration activities on CVN-78. These integration activities include testing the F-35C with CVN-78's EMALS and advanced arresting gear system and testing the ship's storage capabilities for the F-35C's lithium-ion batteries, tires, and wheels. As a result of F-35C developmental delays, the US Navy will not field the aircraft until at least 2018—one year after CVN-78 delivery.[needs update] As a result, the Navy has deferred critical F-35C integration activities, which introduces a risk of system incompatibilities and costly retrofits to the ship after it is delivered to the Navy.[54]

Crew accommodations edit

 
A typical berthing on Gerald R. Ford-class aircraft carriers of three racks per section

Systems that reduce crew workload have allowed the ship's company on Gerald R. Ford-class carriers to total only 2,600 sailors, about 700 fewer than a Nimitz-class carrier. The massive, 180-man berthing areas on the Nimitz class are replaced by 40-rack berthing areas on Gerald R. Ford-class carriers. The smaller berthings are quieter and the layout requires less foot traffic through other spaces.[55] Typically the racks are stacked three high, with locker space per person. The berthings do not feature modern "sit-up" racks with more headroom; bottom and middle racks only accommodate a sailor lying down. Each berthing has an associated head, including showers, vacuum-powered septic-system toilets (no urinals since the berthings are built gender-neutral)[56] and sinks to reduce travel and traffic to access those facilities. WiFi-enabled lounges are located across the passageway in separate spaces from the berthing's racks.[55]

Since deployment, the first two carriers of the class have run into problems with the plumbing of the waste system. The pipes were too narrow to handle the load of users, resulting in the vacuum failing and repeatedly clogged toilets.[57] To alleviate the problem, specialized acidic cleaning solutions have been used to flush out the sewage system. These cleaning treatments cost about $400,000 each time, resulting in a substantial unplanned increase in the lifetime expense of operating these ships according to the GAO. These cleanings will have to be performed for the lifetime of the ship.[57]

Medical facilities edit

Gerald R. Ford, first in the class, has an on-board hospital that includes a full laboratory, pharmacy, operating room, 3-bed intensive care unit, 2-bed emergency room, and 41-bed hospital ward, staffed by 11 medical officers and 30 hospital corpsmen.[58]

Construction edit

 
Gerald R. Ford while under construction at Newport News, along with her construction crew, 2013

Construction of the first vessel in the class, CVN-78 Gerald R. Ford, officially began on 11 August 2005, when Northrop Grumman held a ceremonial steel cut for a 15-ton plate that would form part of a side shell unit of the carrier,[59] but construction began in earnest in early 2007.[60] The carrier was assembled at Newport News Shipbuilding, a division of Huntington Ingalls Industries (formerly Northrop Grumman Shipbuilding) in Newport News, Virginia. This is the only shipyard in the United States that can build nuclear-powered aircraft carriers.

In 2005, Gerald R. Ford was estimated to cost at least $13 billion: $5 billion for research and development plus $8 billion to build.[18] A 2009 report raised the estimate to $14 billion, including $9 billion for construction.[61] In 2013, the life-cycle cost per operating day of a carrier strike group (including aircraft) was estimated at $6.5 million by the Center for New American Security.[62]

Originally, a total of three carriers were authorized for construction, but if the Nimitz-class carriers and Enterprise were to be replaced one-for-one, 11 carriers would be required over the life of the program. The last Nimitz-class aircraft carrier is to be decommissioned in 2058.

In a speech on 6 April 2009, Secretary of Defense Robert Gates announced that each Gerald R. Ford-class carrier would be built over five years, yielding a "more fiscally sustainable path" and a 10-carrier fleet after 2040.[63] That changed in December 2016, when Navy Secretary Ray Mabus signed a Force Structure Assessment calling for a 355-ship fleet with 12 aircraft carriers.[64][65] If enacted, this policy would require each Gerald R. Ford-class carrier to be built in three to four years.[66]

 
Susan Ford Bales, Gerald R. Ford's ceremonial sponsor, examines a propeller in Dry Dock No. 12 at Newport News Shipbuilding.

First-of-class type design changes edit

As construction of CVN-78 progressed, the shipbuilder made first-of-class type design changes, which it will use to update the model before the construction of the remaining vessels of its class. Several of these design changes related to EMALS configuration changes, which required electrical, wiring, and other changes within the ship. The Navy anticipates additional design changes stemming from remaining advanced arresting gear development and testing. According to the Navy, many of these 19,000 changes were programmed into the construction schedule early on—a result of the government's decision, at contract award, to introduce improvements to the ship's warfare systems during construction, which are heavily dependent on evolving commercial technologies.[54]

Naming edit

There was a movement by the USS America Carrier Veterans' Association to have CVN-78 named after America rather than after President Ford.[67] Eventually, the amphibious assault ship LHA-6 was named America.

On 27 May 2011, the U.S. Department of Defense announced the name of CVN-79 would be USS John F. Kennedy.[68]

On 1 December 2012, Secretary of the Navy Ray Mabus announced that CVN-80 would be named USS Enterprise. The information was delivered during a prerecorded speech as part of the deactivation ceremony for the previous Enterprise (CVN-65). The future Enterprise (CVN-80) will be the ninth U.S. Navy ship to bear this name.[69]

On 20 January 2020, during a ceremony in Pearl Harbor, Hawaii, on Martin Luther King Jr. Day, Acting Secretary of the Navy Thomas B. Modly named a future Gerald R. Ford-class aircraft carrier in honor of World War II hero Doris Miller. This will be the first aircraft carrier named for an African American, and the first aircraft carrier to be named for a sailor in the enlisted ranks. It is the second ship named in honor of Miller, who was the first African American to be awarded the Navy Cross.[70][71][72]

Ships in class edit

There are expected to be ten ships of this class.[73] To date, five have been announced:

Ship Hull no. Laid down Launched Commissioned Status Scheduled to replace References
Gerald R. Ford CVN-78 13 November 2009 11 October 2013 22 July 2017 Active, in service Enterprise (CVN-65) [74][75]
John F. Kennedy CVN-79 22 August 2015 29 October 2019 2025 (scheduled) Fitting out Nimitz (CVN-68) [76][1][77][78][79][80]
Enterprise CVN-80 5 April 2022[81] November 2025 (scheduled)[82] 2029 (scheduled)[83] Under construction Dwight D. Eisenhower (CVN-69) [1][84]
Doris Miller CVN-81 January 2026 (scheduled)[82] October 2029 (scheduled)[82] 2032 (scheduled) Under construction Carl Vinson (CVN-70) [1][72]
TBD CVN-82 2027 (scheduled) 2032 (scheduled) 2036 (scheduled) Planned Theodore Roosevelt (CVN-71) [1]

See also edit

Notes edit

  1. ^ Before its redesignation to Gerald R. Ford class, the new carrier (CVN-78) was known as the CVN(X) carrier program ("X" meaning "in development") and then as the CVN-21 carrier program. (Here, "21" is not a hull number, but rather it is common in future plans of the US military, alluding to the 21st century.)

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External links edit

  • Aircraft Carriers – CVN – US Navy Fact File
  • Building The Ford Class Aircraft Carriers - Newport News Shipbuilding
  • Design & Preparations Continue for the USA's New CVN-21 Super-Carrier (updated), Defense Industry Daily. Provides an extensive briefing re: the new ship class, and adds entries for many of the contracts under this program.
  • Gerald R. Ford Class (CVN-78) Aircraft Carrier on Navy Recognition site
  • GAO Reports: Poor Outcomes Are the Predictable Consequences of the Prevalent Acquisition Culture (October 2015), Follow-On Ships Need More Frequent and Accurate Cost Estimates to Avoid Pitfalls of Lead Ship (June 2017)

gerald, ford, class, aircraft, carrier, ford, class, redirects, here, 1950s, royal, navy, vessels, ford, class, seaward, defence, boat, gerald, ford, class, nuclear, powered, aircraft, carriers, currently, being, constructed, united, states, navy, which, inten. Ford class redirects here For the 1950s Royal Navy vessels see Ford class seaward defence boat The Gerald R Ford class nuclear powered aircraft carriers are currently being constructed for the United States Navy which intends to eventually acquire ten of these ships in order to replace current carriers on a one for one basis starting with the lead ship of her class Gerald R Ford CVN 78 replacing Enterprise CVN 65 and later the Nimitz class carriers The new vessels have a hull similar to the Nimitz class but they carry technologies since developed with the CVN X CVN 21 program N 1 such as the Electromagnetic Aircraft Launch System EMALS as well as other design features intended to improve efficiency and reduce operating costs including sailing with smaller crews 15 This class of aircraft carriers is named after former U S President Gerald R Ford 16 CVN 78 was procured in 2008 and commissioned into service on 22 July 2017 The second ship of the class John F Kennedy CVN 79 is scheduled to enter service in 2025 Gerald R Ford class aircraft carrier USS Gerald R Ford underway in April 2017Class overview NameGerald R Ford class aircraft carrier BuildersNewport News Shipbuilding Operators United States Navy Preceded byNimitz class CostProgram cost US 37 30 billion FY2018 1 Unit cost US 12 998 billion FY2018 1 In service2017 present Planned10 2 3 On order1 Building2 Completed1 Active1 General characteristics TypeAircraft carrier DisplacementAbout 100 000 long tons 100 000 tonnes full load 5 Length1 092 ft 333 m 6 1 106 ft 337 m 7 Beam256 ft 78 m flight deck 8 134 ft 41 m waterline 8 Height250 feet 76 m 4 Draft39 ft 12 m 9 Decks25 Installed powerTwo Bechtel A1B PWR nuclear reactors HEU 93 5 13 14 PropulsionFour shafts SpeedIn excess of 30 knots 56 km h 35 mph 6 RangeUnlimited Endurance50 year service life Complement508 officers 3 789 enlisted 9 CrewAbout 2 600 10 Sensors and processing systemsAN SPY 3 Multi Function Radar MFR X band active electronically scanned array AN SPY 4 Volume Search Radar VSR S band active electronically scanned array CVN 78 AN SPY 6 Volume Search Radar VSR S band active electronically scanned array CVN 79 and up Electronic warfare amp decoysAN SLQ 32 V 6 electronic warfare system 11 AN SLQ 25C Nixie towed torpedo decoys 12 ArmamentSurface to air missiles 2 Mk 29 Guided Missile Launching Systems 8 RIM 162 Evolved SeaSparrow Missile ESSM each 2 Mk 49 Guided Missile Launching Systems 21 RIM 116 Rolling Airframe Missiles each Guns 3 Phalanx CIWS 4 Mk 38 25 mm Machine Gun Systems 4 M2 50 Cal 12 7 mm machine guns Aircraft carried75 8 Aviation facilities1 092 ft 252 ft 333 m 77 m flight deck Contents 1 Design features 2 Development 2 1 Flight deck 2 2 Power generation 2 3 Electromagnetic Aircraft Launch System 2 4 Advanced Arresting Gear landing system 2 5 Sensors and self defense systems 2 6 Possible upgrades 2 7 3D computer aided design 2 8 Planned aircraft complement 2 9 Crew accommodations 2 10 Medical facilities 3 Construction 3 1 First of class type design changes 4 Naming 5 Ships in class 6 See also 7 Notes 8 References 9 External linksDesign features editCarriers of the Gerald R Ford class have 1 Advanced Arresting Gear 17 Automation allowing a crew of several hundred fewer than the Nimitz class carrier 18 The updated RIM 162 Evolved SeaSparrow Missile 19 An AN SPY 3 X Band multifunction radar and an AN SPY 4 S Band volume search radar 20 Designated together as Dual Band Radar DBR initially developed for the Zumwalt class destroyers 21 Starting with John F Kennedy CVN 79 the AN SPY 6 will replace the AN SPY 4 as the volume search component of the system 22 An Electromagnetic Aircraft Launch System EMALS in place of traditional steam catapults for launching aircraft 17 A new nuclear reactor design the A1B reactor for greater power generation Stealth features to reduce radar cross section The ability to carry up to 90 aircraft including the Boeing F A 18E F Super Hornet Boeing EA 18G Growler Grumman C 2 Greyhound Northrop Grumman E 2 Hawkeye Lockheed Martin F 35C Lightning II Sikorsky SH 60 Seahawk helicopters and unmanned combat aerial vehicles 23 19 24 The biggest visible difference from earlier supercarriers is the more aft location of the island superstructure 25 The Gerald R Ford class carriers will have a reduced whole life cost due in part to reduced crew size 18 These ships are intended to sustain 160 sorties per day for 30 plus days with a surge capability of 270 sorties per day 26 27 Director of Operational Testing Michael Gilmore has criticized the assumptions used in these forecasts as unrealistic and has indicated sortie rates similar to the 120 240 per day of the Nimitz class would be acceptable 27 28 Development edit nbsp Gerald R Ford arrived at Naval Station Norfolk after seven days of builders trials in April 2017 The current Nimitz class aircraft carriers in US naval service have been part of United States power projection strategy since Nimitz was commissioned in 1975 Displacing about 100 000 tons when fully loaded a Nimitz class carrier can steam in excess of 30 knots 56 km h 35 mph cruise without resupply for 90 days and launch aircraft to strike targets hundreds of miles away 29 The endurance of the Nimitz class is exemplified by USS Theodore Roosevelt which spent 159 days underway during Operation Enduring Freedom without visiting a port or being refueled 30 TheNimitz design has accommodated many new technologies over the decades but it has limited ability to support the most recent technical advances As a 2005 Rand report said The biggest problems facing the Nimitz class are the limited electrical power generation capability and the upgrade driven increase in ship weight and erosion of the center of gravity margin needed to maintain ship stability 31 With these constraints in mind the US Navy developed what was initially known as the CVN 21 program which evolved into CVN 78 Gerald R Ford Improvements were made through developing technologies and more efficient design Major design changes include a larger flight deck improvements in weapons and material handling a new propulsion plant design that requires fewer people to operate and maintain and a new smaller island that has been pushed aft Technological advances in electromagnetics have led to the development of an Electromagnetic Aircraft Launch System EMALS and an Advanced Arresting Gear AAG An integrated warfare system the Ship Self Defense System SSDS has been developed to allow the ship to more easily take on new missions The new Dual Band Radar DBR combines S band and X band radar 32 These advances will allow the new Gerald R Ford class carriers to launch 25 more sorties generate triple the electrical power with improved efficiency and offer crew quality of life improvements 8 15 Flight deck edit nbsp Aerial view of Gerald R Ford CVN 78 bottom alongside USS Harry S Truman CVN 75 top a ship of the previous Nimitz class Catapult No 4 on the Nimitz class cannot launch fully loaded aircraft because of low wing clearance along the edge of the flight deck 33 The movement of weapons from storage and assembly to the aircraft on the flight deck has also been streamlined and accelerated Ordnance will be lifted to the centralized rearming location via higher capacity weapons elevators that use linear motors 34 These elevators are located so that ordnance need not cross any areas of aircraft movement thereby reducing traffic problems in the hangars and on the flight deck In 2008 Rear Admiral Dennis M Dwyer said these changes will make it hypothetically possible to rearm the airplanes in minutes instead of hours 35 Power generation edit The new Bechtel A1B reactor for the Gerald R Ford class is smaller and simpler requires fewer crew and yet is far more powerful than the Nimitz class A4W reactor Two reactors will be installed on each Gerald R Ford class carrier providing a power generation capacity at least 25 greater than the 550 MW thermal of the two A4W reactors in a Nimitz class carrier 36 The portion of thermal power allotted to electrical generation will be tripled 37 The propulsion and power plant of the Nimitz class carriers were designed in the 1960s when onboard technologies required less electrical power New technologies added to the Nimitz class ships have generated increased demands for electricity the current base load leaves little margin to meet expanding demands for power 38 The Gerald R Ford class ships convert steam into power by piping it to four main turbine generators MTG to generate electricity for major ship systems and the new electromagnetic catapults 39 40 The Gerald R Ford class ships use steam turbines for propulsion 40 A larger power output is a major component of the integrated warfare system Engineers took extra steps to ensure that integrating unforeseen technological advances onto a Gerald R Ford class aircraft carrier would be possible The Navy expects the Gerald R Ford class will be part of the fleet for 90 years until the year 2105 which means that the class must successfully accept new technology over the decades Only half of the electric power generation capacity is used by currently planned systems with half remaining available for future technologies 41 Electromagnetic Aircraft Launch System edit Main article Electromagnetic Aircraft Launch System nbsp A drawing of the EMALS s linear induction motor The Electromagnetic Aircraft Launch System EMALS launches aircraft by means of a catapult employing a linear induction motor rather than the steam piston used on the Nimitz class The EMALS accelerates aircraft more smoothly putting less stress on their airframes The EMALS also weighs less is expected to cost less and require less maintenance and can launch both heavier and lighter aircraft than a steam piston driven system It also reduces the carrier s requirement for fresh water thus reducing the demand for energy intensive desalination citation needed Advanced Arresting Gear landing system edit Main article Advanced Arresting Gear This section needs additional citations for verification Please help improve this article by adding citations to reliable sources in this section Unsourced material may be challenged and removed January 2021 Learn how and when to remove this template message Electromagnets are also being used in the new Advanced Arresting Gear AAG system The current system relies on hydraulics to slow and stop a landing aircraft While the hydraulic system is effective as demonstrated by more than fifty years of implementation the AAG system offers a number of improvements The current needs update system is unable to capture unmanned aerial vehicles UAVs without damaging them due to extreme stresses on the airframe UAVs do not have the necessary mass to drive the large hydraulic piston used to trap heavier manned airplanes By using electromagnetics the energy absorption is controlled by a turbo electric engine This makes the trap smoother and reduces shock on airframes Even though the system will look the same from the flight deck as its predecessor it will be more flexible safe and reliable and will require less maintenance and manning 42 Sensors and self defense systems edit nbsp Diagram of AN SPY 3 vertical electronic pencil beam radar conex projections nbsp An Evolved SeaSparrow Missile launching Another addition to the Gerald R Ford class is an integrated active electronically scanned array search and tracking radar system The dual band radar DBR was being developed by Raytheon for both the Zumwalt class guided missile destroyers and the Gerald R Ford class aircraft carriers The island can be kept smaller by replacing six to ten radar antennas with a single six faced radar The DBR works by combining the X band AN SPY 3 multifunction radar with the S band AN SPY 4 Volume Search Radar VSR emitters distributed into three phased arrays 43 The S band radar was later deleted from the Zumwalt class destroyers to save money 21 The three faces dedicated to the X band radar handle low altitude tracking and radar illumination while the three S band faces handle target search and tracking regardless of weather Operating simultaneously over two electromagnetic frequency ranges the DBR marks the first time this functionality has been achieved using two frequencies coordinated by a single resource manager 32 This new system has no moving parts therefore minimizing maintenance and manning requirements for operation The AN SPY 3 consists of three active arrays and the Receiver Exciter REX cabinets above decks and the Signal and Data Processor SDP subsystem below decks The VSR has a similar architecture with the beamforming and narrowband down conversion functionality occurring in two additional cabinets per array A central controller the resource manager resides in the Data Processor DP The DBR is the first radar system that uses a central controller and two active array radars operating at different frequencies The DBR gets its power from the Common Array Power System CAPS which comprises Power Conversion Units PCUs and Power Distribution Units PDUs The DBR is cooled via a closed loop cooling system called the Common Array Cooling System CACS 44 The Enterprise Air Surveillance Radar EASR is a new design surveillance radar that is to be installed in the second Gerald R Ford class aircraft carrier John F Kennedy CVN 79 in lieu of the Dual Band radar The America class amphibious assault ships starting with LHA 8 and the planned LX R will also have this radar 45 The EASR suite s initial per unit cost will be about 180 million less than the DBR for which the estimate is about 500 million 46 Possible upgrades edit nbsp AN SEQ 3 laser prototype during an on board testFuture defense systems such as free electron laser directed energy weapons electric armor and tracking systems will require more power Only half of the electrical power generation capability on CVN 78 is needed to run currently planned systems including EMALS CVN 78 will thus have the power reserves that the Nimitz class lacks to run lasers and electric armor 41 The addition of new technologies power systems design layout and better control systems results in an increased sortie rate of 25 over the Nimitz class and a 25 reduction in manpower required to operate 47 Waste management technology will be deployed on Gerald R Ford Co developed with the Carderock Division of the Naval Surface Warfare Center PyroGenesis Canada Inc was in 2008 awarded the contract to outfit the ship with a Plasma Arc Waste Destruction System PAWDS This compact system will treat all combustible solid waste generated on board the ship After having completed factory acceptance testing in Montreal the system was scheduled to be shipped to the Huntington Ingalls shipyard in late 2011 for installation on the carrier 48 The Navy is developing a free electron laser FEL to defend against cruise missiles and small boat swarms 49 50 51 3D computer aided design edit Newport News Shipbuilding used a full scale three dimensional product model developed in Dassault Systemes CATIA V5 to design and plan the construction of the Gerald R Ford class of aircraft carriers 52 The CVN 78 class was designed to have better weapons movement paths largely eliminating horizontal movements within the ship Current plans call for advanced weapons elevators to move from storage areas to dedicated weapons handling areas Sailors would use motorized carts to move the weapons from storage to the elevators at different levels of the weapons magazines Linear motors are being considered for the advanced weapons elevators The elevators will also be relocated such that they will not impede aircraft operations on the flight deck The redesign of the weapons movement paths and the location of the weapons elevators on the flight deck will reduce manpower and contribute to a much higher sortie generation rate 53 Planned aircraft complement edit The Gerald R Ford class is designed to accommodate the new Joint Strike Fighter carrier variant aircraft F 35C but aircraft development and testing delays have affected integration activities on CVN 78 These integration activities include testing the F 35C with CVN 78 s EMALS and advanced arresting gear system and testing the ship s storage capabilities for the F 35C s lithium ion batteries tires and wheels As a result of F 35C developmental delays the US Navy will not field the aircraft until at least 2018 one year after CVN 78 delivery needs update As a result the Navy has deferred critical F 35C integration activities which introduces a risk of system incompatibilities and costly retrofits to the ship after it is delivered to the Navy 54 Crew accommodations edit nbsp A typical berthing on Gerald R Ford class aircraft carriers of three racks per section Systems that reduce crew workload have allowed the ship s company on Gerald R Ford class carriers to total only 2 600 sailors about 700 fewer than a Nimitz class carrier The massive 180 man berthing areas on the Nimitz class are replaced by 40 rack berthing areas on Gerald R Ford class carriers The smaller berthings are quieter and the layout requires less foot traffic through other spaces 55 Typically the racks are stacked three high with locker space per person The berthings do not feature modern sit up racks with more headroom bottom and middle racks only accommodate a sailor lying down Each berthing has an associated head including showers vacuum powered septic system toilets no urinals since the berthings are built gender neutral 56 and sinks to reduce travel and traffic to access those facilities WiFi enabled lounges are located across the passageway in separate spaces from the berthing s racks 55 Since deployment the first two carriers of the class have run into problems with the plumbing of the waste system The pipes were too narrow to handle the load of users resulting in the vacuum failing and repeatedly clogged toilets 57 To alleviate the problem specialized acidic cleaning solutions have been used to flush out the sewage system These cleaning treatments cost about 400 000 each time resulting in a substantial unplanned increase in the lifetime expense of operating these ships according to the GAO These cleanings will have to be performed for the lifetime of the ship 57 Medical facilities edit Gerald R Ford first in the class has an on board hospital that includes a full laboratory pharmacy operating room 3 bed intensive care unit 2 bed emergency room and 41 bed hospital ward staffed by 11 medical officers and 30 hospital corpsmen 58 Construction edit nbsp Gerald R Ford while under construction at Newport News along with her construction crew 2013 Construction of the first vessel in the class CVN 78 Gerald R Ford officially began on 11 August 2005 when Northrop Grumman held a ceremonial steel cut for a 15 ton plate that would form part of a side shell unit of the carrier 59 but construction began in earnest in early 2007 60 The carrier was assembled at Newport News Shipbuilding a division of Huntington Ingalls Industries formerly Northrop Grumman Shipbuilding in Newport News Virginia This is the only shipyard in the United States that can build nuclear powered aircraft carriers In 2005 Gerald R Ford was estimated to cost at least 13 billion 5 billion for research and development plus 8 billion to build 18 A 2009 report raised the estimate to 14 billion including 9 billion for construction 61 In 2013 the life cycle cost per operating day of a carrier strike group including aircraft was estimated at 6 5 million by the Center for New American Security 62 Originally a total of three carriers were authorized for construction but if the Nimitz class carriers and Enterprise were to be replaced one for one 11 carriers would be required over the life of the program The last Nimitz class aircraft carrier is to be decommissioned in 2058 In a speech on 6 April 2009 Secretary of Defense Robert Gates announced that each Gerald R Ford class carrier would be built over five years yielding a more fiscally sustainable path and a 10 carrier fleet after 2040 63 That changed in December 2016 when Navy Secretary Ray Mabus signed a Force Structure Assessment calling for a 355 ship fleet with 12 aircraft carriers 64 65 If enacted this policy would require each Gerald R Ford class carrier to be built in three to four years 66 nbsp Susan Ford Bales Gerald R Ford s ceremonial sponsor examines a propeller in Dry Dock No 12 at Newport News Shipbuilding First of class type design changes edit As construction of CVN 78 progressed the shipbuilder made first of class type design changes which it will use to update the model before the construction of the remaining vessels of its class Several of these design changes related to EMALS configuration changes which required electrical wiring and other changes within the ship The Navy anticipates additional design changes stemming from remaining advanced arresting gear development and testing According to the Navy many of these 19 000 changes were programmed into the construction schedule early on a result of the government s decision at contract award to introduce improvements to the ship s warfare systems during construction which are heavily dependent on evolving commercial technologies 54 Naming editThere was a movement by the USS America Carrier Veterans Association to have CVN 78 named after America rather than after President Ford 67 Eventually the amphibious assault ship LHA 6 was named America On 27 May 2011 the U S Department of Defense announced the name of CVN 79 would be USS John F Kennedy 68 On 1 December 2012 Secretary of the Navy Ray Mabus announced that CVN 80 would be named USS Enterprise The information was delivered during a prerecorded speech as part of the deactivation ceremony for the previous Enterprise CVN 65 The future Enterprise CVN 80 will be the ninth U S Navy ship to bear this name 69 On 20 January 2020 during a ceremony in Pearl Harbor Hawaii on Martin Luther King Jr Day Acting Secretary of the Navy Thomas B Modly named a future Gerald R Ford class aircraft carrier in honor of World War II hero Doris Miller This will be the first aircraft carrier named for an African American and the first aircraft carrier to be named for a sailor in the enlisted ranks It is the second ship named in honor of Miller who was the first African American to be awarded the Navy Cross 70 71 72 Ships in class editThere are expected to be ten ships of this class 73 To date five have been announced Ship Hull no Laid down Launched Commissioned Status Scheduled to replace References Gerald R Ford CVN 78 13 November 2009 11 October 2013 22 July 2017 Active in service Enterprise CVN 65 74 75 John F Kennedy CVN 79 22 August 2015 29 October 2019 2025 scheduled Fitting out Nimitz CVN 68 76 1 77 78 79 80 Enterprise CVN 80 5 April 2022 81 November 2025 scheduled 82 2029 scheduled 83 Under construction Dwight D Eisenhower CVN 69 1 84 Doris Miller CVN 81 January 2026 scheduled 82 October 2029 scheduled 82 2032 scheduled Under construction Carl Vinson CVN 70 1 72 TBD CVN 82 2027 scheduled 2032 scheduled 2036 scheduled Planned Theodore Roosevelt CVN 71 1 See also edit nbsp United States portal Modern United States Navy carrier air operations List of aircraft carriers List of naval ship classes in service List of current United States Navy ships List of aircraft carrier classes of the United States Navy A1B reactor Naval aviation Type 003 aircraft carrier China Queen Elizabeth class aircraft carrier United Kingdom PANG France Notes edit Before its redesignation to Gerald R Ford class the new carrier CVN 78 was known as the CVN X carrier program X meaning in development and then as the CVN 21 carrier program Here 21 is not a hull number but rather it is common in future plans of the US military alluding to the 21st century References edit a b c d e f g O Rourke Ronald 22 December 2017 Navy Ford 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March 2015 a b FORD CLASS CARRIERS Lead Ship Testing and Reliability Shortfalls Will Limit Initial Fleet Capabilities PDF GAO September 2013 Archived PDF from the original on 27 September 2014 Retrieved 24 October 2014 a b Bacon Lance M 13 October 2014 Crew s ship Sailors comfort a centerpiece of new supercarrier Ford Navy Times Retrieved 5 June 2017 Shapiro Michael Welles 25 June 2012 No urinals on the Ford class carriers Newport News Daily Press Archived from the original on 7 April 2017 Retrieved 6 April 2017 a b Capaccio Anthony 24 March 2020 Unclogging Toilets at 400 000 a Flush Hits Navy s Costs Bloomberg Retrieved 30 December 2020 Meet Gerald R Ford s Senior Medical Officer ussgeraldrford wordpress com 8 August 2016 Archived from the original on 5 January 2018 Retrieved 5 January 2018 Ford Reaches 50 Percent Structural Completion PDF Newport News Shipbuilding Archived PDF from the original on 28 October 2014 Retrieved 1 September 2011 Glass Jon W 25 March 2007 Construction Begins on the First Ford class Carrier The Virginian Pilot Retrieved 31 October 2008 The Politician Class Carriers Evolve strategypage com 12 April 2009 Archived from the original on 15 April 2009 Retrieved 18 April 2009 Capt Henry J Hendrix USN PhD March 2009 At What Cost a Carrier PDF Disruptive Defense Papers Center for a New American Security Archived from the original PDF on 13 August 2014 Defense Budget Recommendation Statement Arlington VA US Department of Defense 6 April 2009 Archived from the original on 3 December 2009 Retrieved 27 March 2010 Navy This story was written by The Office of the Secretary of the Secretary of the Navy Announces Need for 355 ship Navy Archived from the original on 7 April 2018 Retrieved 6 April 2018 Navy Wants 355 Ships New Assessment Adds Destroyers Attack Subs 16 December 2016 Archived from the original on 7 April 2018 Retrieved 6 April 2018 Report to Congress on Gerald R Ford Class Carrier Program USNI News 4 April 2018 Archived from the original on 7 April 2018 Retrieved 6 April 2018 LaGrone Sam 23 April 2013 Twenty Six US Navy Ship Naming Controversies USS Gerald R Ford USNI News U S Naval Institute Archived from the original on 13 August 2017 Retrieved 12 August 2017 The vets argued that Ford was not much more than an adequate president so it was more fitting for the carrier class to be known as America Navy Names Next Aircraft Carrier USS John F Kennedy U S Department of Defense Archived from the original News Release on 20 August 2013 Retrieved 29 May 2011 US Navy s Ford class aircraft carrier to be named Enterprise Brahmand com 4 December 2012 Archived from the original Defence amp Aerospace News on 7 December 2012 Retrieved 4 December 2012 Diaz Johnny 18 January 2020 Navy Aircraft Carrier to Be Named for Black Pearl Harbor Veteran The New York Times Retrieved 19 January 2020 Acting Secretary of the Navy Public Affairs 19 January 2020 Navy Will Name A Future Ford Class Aircraft Carrier After WWII Hero Doris Miller Press release United States Navy a b LaGrone Sam 18 January 2020 Next Ford class Carrier to be Named After Pearl Harbor Hero Doris Miller USNI News Retrieved 18 January 2020 CVN 77 Delivery Moved To December Newport News on Track For January Commissioning Defense Daily 4 August 2008 Archived from the original on 13 August 2017 Retrieved 12 August 2017 The US Navy just took delivery of the world s most advanced aircraft carrier Business Insider Archived from the original on 1 June 2017 Retrieved 1 June 2017 Aircraft Carrier Gerald R Ford CVN 78 Christened at Newport News Shipbuilding Defence Talk 12 November 2013 Archived from the original on 3 December 2013 Retrieved 2 December 2013 Ress Dave 3 November 2020 To speed up delivery of USS John F Kennedy Navy to pay up to 315 million extra dailypress com Retrieved 16 January 2021 Navy Names Next Aircraft Carrier USS John F Kennedy Press release Secretary of the Navy Public Affairs 29 May 2011 Archived from the original on 2 June 2011 Retrieved 29 May 2011 Larter David 4 May 2018 Here s the latest on America s next supercarriers n a Navy Ford CVN 78 Class Aircraft Carrier Program PDF CRS Retrieved 28 July 2021 Burchett Caitlyn 24 March 2023 Delivery date for next carrier USS John F Kennedy pushed back a year Daily Press Retrieved 15 April 2023 LaGrone Sam 5 April 2022 HII Lays Keel of Future Aircraft Carrier USS Enterprise usni org U S Naval Institute a b c Malone Capt Phillip May 6 2019 Sea Air Space Exposition John F Kennedy CVN 79 Enterprise CVN 80 amp Unnamed CVN 81 Two Ship Buy PDF Naval Sea Systems Command Shelbourne Mallory 15 March 2024 Aircraft Carrier Enterprise Delivery Delayed by 18 Months Says Navy usni org U S Naval Institute First cut of steel kicks off construction of the aircraft carrier Enterprise at Newport News Shipbuilding Press release WTKR 21 August 2017 Archived from the original on 15 September 2017 Retrieved 6 September 2017 External links edit nbsp Wikimedia Commons has media related to Gerald R Ford class aircraft carriers Aircraft Carriers CVN US Navy Fact File Building The Ford Class Aircraft Carriers Newport News Shipbuilding Design amp Preparations Continue for the USA s New CVN 21 Super Carrier updated Defense Industry Daily Provides an extensive briefing re the new ship class and adds entries for many of the contracts under this program Gerald R Ford Class CVN 78 Aircraft Carrier on Navy Recognition site GAO Reports Poor Outcomes Are the Predictable Consequences of the Prevalent Acquisition Culture October 2015 Follow On Ships Need More Frequent and Accurate Cost Estimates to Avoid Pitfalls of Lead Ship June 2017 Retrieved from https en wikipedia org w index php title Gerald R Ford class aircraft carrier amp oldid 1219466317, wikipedia, wiki, book, books, library,

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