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XS-1 (spacecraft)

January 01, 1970

The DARPA XS-1 was an experimental spaceplane/booster with the planned capability to deliver small satellites into orbit for the U.S. Military.[1] It was reported to be designed to be reusable as frequently as once a day, with a stated goal of doing so for 10 days straight.[2] The XS-1 was intended to directly replace the first stage of a multistage rocket by taking off vertically and flying to hypersonic speed and high suborbital altitude, enabling one or more expendable upper stages to separate and deploy a payload into low Earth orbit. The XS-1 would then return to Earth, where it could ostensibly be serviced fast enough to repeat the process at least once every 24 hours.[3][4]

The DARPA XS-1 program operated 2013–2020.[5] After several years of refinement and proposals, in May 2017, the Defense Advanced Research Projects Agency (DARPA)[6] selected Boeing for Phase 2/3 to build and test an XS-1 spacecraft (now called the Experimental Spaceplane program).[7] At the time, test flights were scheduled to start no earlier than 2020.[7] On 22 January 2020, it was announced that Boeing was ceasing its role in the program, effectively ending it.[8]

History edit

DARPA created the XS-1 program (later renamed to the Experimental Spaceplane Program), with the intent to increase national security by inventing a new, inexpensive, short-notice form of hypersonic aircraft. They promoted concepts such as reaching a Low Earth orbit within days, unmanned reusable rockets, external boosters being replaced by internal, self-contained cryogenic propelled boosters, the ability to deploy 900 to 3,000 lb (410 to 1,400 kg) payloads into polar orbit, composite-metallic wings that could withstand suborbital hypersonic flight and temperatures exceeding 3,000 °F (1,600 °C), autonomous flight technology developed by DARPA's Airborne Launch Assist Space Access (ALASA) program, and reaching Mach 10.[9]

The XS-1 program followed several previous failed attempts to develop a reusable space launch vehicle. The Rockwell X-30 in the 1980s and X-33 VentureStar in the 1990s never flew because of immature technologies. DARPA's last attempt was the Responsive Access, Small Cargo, Affordable Launch[10][11] (RASCAL) program in the early 2000s with the goal of placing 300 lb (140 kg) payloads in orbit for less than $750,000.

The XS-1 program was announced in November 2013 at a DARPA industry day. DARPA stated that the XS-1 was more feasible due to better technologies, including light and low-cost composite airframe and tank structures, durable thermal protection, reusable and affordable propulsion, and aircraft-like health management systems.[5] Jess Sponable, the XS-1 program manager, spoke on February 5, 2014, at NASA's Future In-Space Operations group, stating, "The vision here is to break the cycle of escalating space system costs, enable routine space access and hypersonic vehicles."[12]

By July 2014, three companies were awarded contracts to design a demonstration vehicle. The selected companies were Boeing with Blue Origin, Masten Space Systems with XCOR Aerospace, and Northrop Grumman with Virgin Galactic. Unlike other DARPA programs that were handed off to parts of the United States military once proven successful, this initiative was designed from the start to be a direct partnership between the agency and industry. In August 2015, Boeing, Northrop Grumman, and Masten Space Systems all received additional funding from DARPA to continue their design concepts for Phase 1B of the program. As of 2015, the first XS-1 orbital mission was planned to occur as early as 2020.[13]

DARPA began Phase 2 of the XS-1 program in April 2016.[14] In July 2016, DARPA stated that they believed "the time is right for a renewed effort, one that began in 2013/14, but [in 2016 was] ramped up through a solicitation process, allowing for several industry concepts to be created. Per the [solicitation] requirements, the winged craft [requirements would continue to need to] be capable of performing 10 flights in 10 days, with a payload capacity greater than 3,000 lbs for a cost of less than $5 million USD per flight."[15]

In May 2017, DARPA selected Boeing for Phase 2/3 to build and test the XS-1 (now called the Experimental Spaceplane program).[7] The phase 2/3 contract included $146 million in DARPA funding and an unspecified contribution by the company.[16]

On 22 January 2020, DARPA announced that Boeing was pulling out of the XS-1 program "immediately" and effectively ending the program.[8][16]

Program goals edit

The goals of the program as of September 2013 were:[3][17] The space plane must carry a 3,000–5,000 lb (1,400–2,300 kg) payload to low Earth orbit for less than a cost of US$5 million per flight,[4] at a rate of 10 or more flights per year; at that time, launching that type of payload requires using an Orbital Sciences Corporation Minotaur IV expendable booster, priced at $55 million once per year.

  • hypersonic flight to Mach 10 (12,300 km/h) or higher
  • fast one-day turnaround time, including flying 10 times in 10 days
  • a 1,800 kg (4,000 lb) payload on a trajectory to orbit
  • launch cost less than 1/10 that of current launch systems, approximately US$5 million per flight[4]
  • uncrewed vehicle
  • use a reusable first stage booster to fly at hypersonic speeds to a suborbital altitude, coupled with one or more expendable upper stages that would separate and deploy a satellite[18][19]

Entrants and selection edit

Boeing, Northrop Grumman Aerospace Systems, and Masten Space Systems have Phase 1 conceptual design contracts.

Boeing performed trade studies with Blue Origin initially. Boeing's design would allow the autonomous booster to carry the second stage and payload to high altitude and deploy them into space. The booster would then return to Earth, where it could be quickly prepared for the next flight by applying operation and maintenance principles similar to modern aircraft.[20]

Northrop Grumman used its aircraft, spacecraft, and autonomous systems experience to work with its team consisting of Scaled Composites to lead fabrication and assembly, and Virgin Galactic to head commercial spaceplane operations and transition; Virgin Galactic and Scaled Composites both worked on the SpaceShip Two, the world's only commercial spaceline. The team also leveraged technologies developed during related projects for DARPA, NASA, and the U.S. Air Force Research Laboratory to give the government "return on those investments." Their concept included a clean-pad launch[clarification needed] using a transporter erector launcher with minimal infrastructure and ground crews, highly autonomous flight operations, and horizontal landing and recovery on standard runways.[18]

Masten Space Systems has experience in rapid reusable rocket-powered vehicles, with their Xombie, Xoie, and Xaero vertical takeoff, vertical landing (VTVL) designs having already met or exceeded the 10 flights in 10 days objective set by the program. Although the company consists of approximately 30 employees and is headquartered in a small building at the Mojave Air and Space Port, they have spent years flying various small VTVL systems on short hops at the spaceport, serving as test beds for guidance, navigation, and control (GNC) systems designed to safely land spacecraft on the Moon and potentially other planets. Their concept showed a VTVL system taking off vertically from a launch pad with wings and a tail fin. Masten Space Systems was partnered with XCOR Aerospace for Phase 1A.[21]

Phase 2 & 3

In May 2017 Boeing was selected to partner with DARPA to build the XS-1.[22] Aerojet Rocketdyne was to provide AR-22 engines, derived from the RS-25 engine, for the spacecraft.[23] The phase 2/3 contract to build and fly the prototype included US$146 million of DARPA funding.[16][clarification needed]

Boeing XS-1 Phantom Express edit

 
A rendering of Boeing's XS-1 Phantom Express launch vehicle on LC-48

The Boeing design was a vertical takeoff, horizontal landing (VTHL) craft[7] called Phantom Express, intended to increase the nation's access to space.[24] The planned specifications include a vehicle height of 100 feet (30 m), with a 62 foot (19 m) wingspan. The Phantom express was to use an Aerojet Rocketdyne AR-22 engine, which was originally built for the Space Shuttle program, but has been modified to be reused ten times within ten days, for less than $5 million per launch. It was intended to loft satellites cheaply and rapidly, with reusability further lowering the cost per launch. This performance requirement was demonstrated on a test stand in July 2018.[25] On 22 January 2020, it was announced that Boeing's Phantom Works division was ceasing its role in the program. Boeing representatives stated that their investments into the XS-1 project would be redirected to other Boeing projects that relate to air, sea, and space domains.[8] DARPA sought no refunds, as Boeing received payment with accordance to milestones achieved in development. The program was not entirely unfruitful, as the work done proved that the technologies available at the time would be able to support new projects similar to the XS-1 program, and no technical barriers were present.[26]

See also edit

References edit

  1. ^ David Axe (2015-08-03). "Pentagon Preps for Orbital War With New Spaceplane". The Daily Beast. Retrieved 2015-08-03.
  2. ^ . DARPA. Archived from the original on 2016-06-16. Retrieved 2016-06-20.
  3. ^ a b Foust, Jeff (2013-09-12). "DARPA To Start Reusable Launch Vehicle Program". Space News. Archived from the original on September 13, 2013. Retrieved 2013-09-13.
  4. ^ a b c Howell, Elizabeth (1 May 2015). "XS-1: DARPA's Experimental Spaceplane". Space.com. Retrieved 2015-05-14.
  5. ^ a b "Darpa Targets Lower Launch Costs With XS-1 Spaceplane". Aviation Week. 2 December 2013.
  6. ^ "Defense Advanced Research Projects Agency". www.darpa.mil. Retrieved 2022-12-14.
  7. ^ a b c d "DARPA Picks Design for Next-Generation Spaceplane" May 2017
  8. ^ a b c "Boeing drops out of DARPA Experimental Spaceplane program". Space News, 22 January 2020.
  9. ^ "Experimental Spaceplane (Archived)". www.darpa.mil. Retrieved December 25, 2022.
  10. ^ Lopata, Jacob; Carter, Preston (2004-08-12). "DARPA's RASCAL: Status, Challenges, and Accomplishments". Small Satellite Conference.
  11. ^ Carter, Preston; Brown, Owen; Rice, Tharen; Tardy, Jason (2003-08-11). "RASCAL: DARPA's Solution to Responsive, Affordable, Micro-Satellite Space Access". Small Satellite Conference.
  12. ^ "US Military Space Plane aims for 2017 lift off". spacedaily.com. Retrieved 2014-03-21.
  13. ^ DARPA Awards $20 Million for Continued Development of a Military Space Plane - Defense-Update.com, 8 August 2015
  14. ^ XS-1 Program to Ease Access to Space Enters Phase 2 - DARPA.mil, 7 April 2016
  15. ^ Gebhardt, Chris (2016-07-13). "DARPA pushing new effort with Experimental Spaceplane, XS-1". NASASpaceFlight.com. Retrieved 2016-08-31.
  16. ^ a b c "Boeing’s Phantom Express Vanishes into Thin Air". parabolicarc.com, 22 Jan 2020.
  17. ^ "DARPA fires up XS-1 space plane quest | Cutting Edge". CNET News. Retrieved 2014-03-21.
  18. ^ a b Northrop Grumman Developing XS-1 Spaceplane For DARPA - Spacedaily.com, 20 August 2014
  19. ^ DARPA issues first-phase solicitation for XS-1 hypersonic space plane for deploying satellites - Militaryaerospace.com, 15 November 2013
  20. ^ Clark, Stephen (13 June 2017). "Boeing, DARPA to base XS-1 spaceplane at Cape Canaveral". Spaceflight Now. Retrieved 11 February 2020.
  21. ^ Masten Space Systems Aims High on XS-1 Military Space Plane Project - Space.com, 26 August 2014
  22. ^ "Boeing is building DARPA's new hypersonic space plane". Engadget. 24 May 2017. Retrieved 11 February 2020.
  23. ^ "Aerojet Rocketdyne Selected As Main Propulsion Provider for Boeing and DARPA Experimental Spaceplane". 24 May 2017. Retrieved 25 May 2017.
  24. ^ "Boeing: Phantom Express". www.boeing.com. Retrieved 19 July 2018.
  25. ^ Clark, Stephen (July 18, 2018). "Rapid-fire engine tests raise hopes for DARPA's planned reusable spaceplane – Spaceflight Now". spaceflightnow.com. Pole Star Publications Ltd. Retrieved 19 July 2018.
  26. ^ Mike Wall (2020-01-23). "DARPA scraps XS-1 military space plane project after Boeing drops out". Space.com. Retrieved 2024-01-23.

External links edit

  • Boeing Phantom Express official site
  • DARPA XS-1 artist concept animation video, 2014.
  • Masten Space Systems, Inc. award notice, US$3 million, US government document, June 27, 2014. DARPA XS-1 artist concept animation video

January 01, 1970
spacecraft, darpa, experimental, spaceplane, booster, with, planned, capability, deliver, small, satellites, into, orbit, military, reported, designed, reusable, frequently, once, with, stated, goal, doing, days, straight, intended, directly, replace, first, s. The DARPA XS 1 was an experimental spaceplane booster with the planned capability to deliver small satellites into orbit for the U S Military 1 It was reported to be designed to be reusable as frequently as once a day with a stated goal of doing so for 10 days straight 2 The XS 1 was intended to directly replace the first stage of a multistage rocket by taking off vertically and flying to hypersonic speed and high suborbital altitude enabling one or more expendable upper stages to separate and deploy a payload into low Earth orbit The XS 1 would then return to Earth where it could ostensibly be serviced fast enough to repeat the process at least once every 24 hours 3 4 The DARPA XS 1 program operated 2013 2020 5 After several years of refinement and proposals in May 2017 the Defense Advanced Research Projects Agency DARPA 6 selected Boeing for Phase 2 3 to build and test an XS 1 spacecraft now called the Experimental Spaceplane program 7 At the time test flights were scheduled to start no earlier than 2020 7 On 22 January 2020 it was announced that Boeing was ceasing its role in the program effectively ending it 8 Contents 1 History 2 Program goals 3 Entrants and selection 4 Boeing XS 1 Phantom Express 5 See also 6 References 7 External linksHistory editDARPA created the XS 1 program later renamed to the Experimental Spaceplane Program with the intent to increase national security by inventing a new inexpensive short notice form of hypersonic aircraft They promoted concepts such as reaching a Low Earth orbit within days unmanned reusable rockets external boosters being replaced by internal self contained cryogenic propelled boosters the ability to deploy 900 to 3 000 lb 410 to 1 400 kg payloads into polar orbit composite metallic wings that could withstand suborbital hypersonic flight and temperatures exceeding 3 000 F 1 600 C autonomous flight technology developed by DARPA s Airborne Launch Assist Space Access ALASA program and reaching Mach 10 9 The XS 1 program followed several previous failed attempts to develop a reusable space launch vehicle The Rockwell X 30 in the 1980s and X 33 VentureStar in the 1990s never flew because of immature technologies DARPA s last attempt was the Responsive Access Small Cargo Affordable Launch 10 11 RASCAL program in the early 2000s with the goal of placing 300 lb 140 kg payloads in orbit for less than 750 000 The XS 1 program was announced in November 2013 at a DARPA industry day DARPA stated that the XS 1 was more feasible due to better technologies including light and low cost composite airframe and tank structures durable thermal protection reusable and affordable propulsion and aircraft like health management systems 5 Jess Sponable the XS 1 program manager spoke on February 5 2014 at NASA s Future In Space Operations group stating The vision here is to break the cycle of escalating space system costs enable routine space access and hypersonic vehicles 12 By July 2014 three companies were awarded contracts to design a demonstration vehicle The selected companies were Boeing with Blue Origin Masten Space Systems with XCOR Aerospace and Northrop Grumman with Virgin Galactic Unlike other DARPA programs that were handed off to parts of the United States military once proven successful this initiative was designed from the start to be a direct partnership between the agency and industry In August 2015 Boeing Northrop Grumman and Masten Space Systems all received additional funding from DARPA to continue their design concepts for Phase 1B of the program As of 2015 update the first XS 1 orbital mission was planned to occur as early as 2020 13 DARPA began Phase 2 of the XS 1 program in April 2016 14 In July 2016 DARPA stated that they believed the time is right for a renewed effort one that began in 2013 14 but in 2016 was ramped up through a solicitation process allowing for several industry concepts to be created Per the solicitation requirements the winged craft requirements would continue to need to be capable of performing 10 flights in 10 days with a payload capacity greater than 3 000 lbs for a cost of less than 5 million USD per flight 15 In May 2017 DARPA selected Boeing for Phase 2 3 to build and test the XS 1 now called the Experimental Spaceplane program 7 The phase 2 3 contract included 146 million in DARPA funding and an unspecified contribution by the company 16 On 22 January 2020 DARPA announced that Boeing was pulling out of the XS 1 program immediately and effectively ending the program 8 16 Program goals editThe goals of the program as of September 2013 update were 3 17 The space plane must carry a 3 000 5 000 lb 1 400 2 300 kg payload to low Earth orbit for less than a cost of US 5 million per flight 4 at a rate of 10 or more flights per year at that time launching that type of payload requires using an Orbital Sciences Corporation Minotaur IV expendable booster priced at 55 million once per year hypersonic flight to Mach 10 12 300 km h or higher fast one day turnaround time including flying 10 times in 10 days a 1 800 kg 4 000 lb payload on a trajectory to orbit launch cost less than 1 10 that of current launch systems approximately US 5 million per flight 4 uncrewed vehicle use a reusable first stage booster to fly at hypersonic speeds to a suborbital altitude coupled with one or more expendable upper stages that would separate and deploy a satellite 18 19 Entrants and selection editBoeing Northrop Grumman Aerospace Systems and Masten Space Systems have Phase 1 conceptual design contracts Boeing performed trade studies with Blue Origin initially Boeing s design would allow the autonomous booster to carry the second stage and payload to high altitude and deploy them into space The booster would then return to Earth where it could be quickly prepared for the next flight by applying operation and maintenance principles similar to modern aircraft 20 Northrop Grumman used its aircraft spacecraft and autonomous systems experience to work with its team consisting of Scaled Composites to lead fabrication and assembly and Virgin Galactic to head commercial spaceplane operations and transition Virgin Galactic and Scaled Composites both worked on the SpaceShip Two the world s only commercial spaceline The team also leveraged technologies developed during related projects for DARPA NASA and the U S Air Force Research Laboratory to give the government return on those investments Their concept included a clean pad launch clarification needed using a transporter erector launcher with minimal infrastructure and ground crews highly autonomous flight operations and horizontal landing and recovery on standard runways 18 Masten Space Systems has experience in rapid reusable rocket powered vehicles with their Xombie Xoie and Xaero vertical takeoff vertical landing VTVL designs having already met or exceeded the 10 flights in 10 days objective set by the program Although the company consists of approximately 30 employees and is headquartered in a small building at the Mojave Air and Space Port they have spent years flying various small VTVL systems on short hops at the spaceport serving as test beds for guidance navigation and control GNC systems designed to safely land spacecraft on the Moon and potentially other planets Their concept showed a VTVL system taking off vertically from a launch pad with wings and a tail fin Masten Space Systems was partnered with XCOR Aerospace for Phase 1A 21 Phase 2 amp 3 In May 2017 Boeing was selected to partner with DARPA to build the XS 1 22 Aerojet Rocketdyne was to provide AR 22 engines derived from the RS 25 engine for the spacecraft 23 The phase 2 3 contract to build and fly the prototype included US 146 million of DARPA funding 16 clarification needed Boeing XS 1 Phantom Express edit nbsp A rendering of Boeing s XS 1 Phantom Express launch vehicle on LC 48 The Boeing design was a vertical takeoff horizontal landing VTHL craft 7 called Phantom Express intended to increase the nation s access to space 24 The planned specifications include a vehicle height of 100 feet 30 m with a 62 foot 19 m wingspan The Phantom express was to use an Aerojet Rocketdyne AR 22 engine which was originally built for the Space Shuttle program but has been modified to be reused ten times within ten days for less than 5 million per launch It was intended to loft satellites cheaply and rapidly with reusability further lowering the cost per launch This performance requirement was demonstrated on a test stand in July 2018 25 On 22 January 2020 it was announced that Boeing s Phantom Works division was ceasing its role in the program Boeing representatives stated that their investments into the XS 1 project would be redirected to other Boeing projects that relate to air sea and space domains 8 DARPA sought no refunds as Boeing received payment with accordance to milestones achieved in development The program was not entirely unfruitful as the work done proved that the technologies available at the time would be able to support new projects similar to the XS 1 program and no technical barriers were present 26 See also editAirborne Launch Assist Space Access Baikal rocket booster Boeing X 37 Boeing X 51 DARPA Falcon Project Liquid fly back booster 1999 2004 study for Ariane NASA X 43 Reusable Booster System USAF project 2010 to 2012 RLV TD Spaceplane Single stage to orbit SSTO References edit David Axe 2015 08 03 Pentagon Preps for Orbital War With New Spaceplane The Daily Beast Retrieved 2015 08 03 Experimental Spaceplane XS 1 DARPA Archived from the original on 2016 06 16 Retrieved 2016 06 20 a b Foust Jeff 2013 09 12 DARPA To Start Reusable Launch Vehicle Program Space News Archived from the original on September 13 2013 Retrieved 2013 09 13 a b c Howell Elizabeth 1 May 2015 XS 1 DARPA s Experimental Spaceplane Space com Retrieved 2015 05 14 a b Darpa Targets Lower Launch Costs With XS 1 Spaceplane Aviation Week 2 December 2013 Defense Advanced Research Projects Agency www darpa mil Retrieved 2022 12 14 a b c d DARPA Picks Design for Next Generation Spaceplane May 2017 a b c Boeing drops out of DARPA Experimental Spaceplane program Space News 22 January 2020 Experimental Spaceplane Archived www darpa mil Retrieved December 25 2022 Lopata Jacob Carter Preston 2004 08 12 DARPA s RASCAL Status Challenges and Accomplishments Small Satellite Conference Carter Preston Brown Owen Rice Tharen Tardy Jason 2003 08 11 RASCAL DARPA s Solution to Responsive Affordable Micro Satellite Space Access Small Satellite Conference US Military Space Plane aims for 2017 lift off spacedaily com Retrieved 2014 03 21 DARPA Awards 20 Million for Continued Development of a Military Space Plane Defense Update com 8 August 2015 XS 1 Program to Ease Access to Space Enters Phase 2 DARPA mil 7 April 2016 Gebhardt Chris 2016 07 13 DARPA pushing new effort with Experimental Spaceplane XS 1 NASASpaceFlight com Retrieved 2016 08 31 a b c Boeing s Phantom Express Vanishes into Thin Air parabolicarc com 22 Jan 2020 DARPA fires up XS 1 space plane quest Cutting Edge CNET News Retrieved 2014 03 21 a b Northrop Grumman Developing XS 1 Spaceplane For DARPA Spacedaily com 20 August 2014 DARPA issues first phase solicitation for XS 1 hypersonic space plane for deploying satellites Militaryaerospace com 15 November 2013 Clark Stephen 13 June 2017 Boeing DARPA to base XS 1 spaceplane at Cape Canaveral Spaceflight Now Retrieved 11 February 2020 Masten Space Systems Aims High on XS 1 Military Space Plane Project Space com 26 August 2014 Boeing is building DARPA s new hypersonic space plane Engadget 24 May 2017 Retrieved 11 February 2020 Aerojet Rocketdyne Selected As Main Propulsion Provider for Boeing and DARPA Experimental Spaceplane 24 May 2017 Retrieved 25 May 2017 Boeing Phantom Express www boeing com Retrieved 19 July 2018 Clark Stephen July 18 2018 Rapid fire engine tests raise hopes for DARPA s planned reusable spaceplane Spaceflight Now spaceflightnow com Pole Star Publications Ltd Retrieved 19 July 2018 Mike Wall 2020 01 23 DARPA scraps XS 1 military space plane project after Boeing drops out Space com Retrieved 2024 01 23 External links editBoeing Phantom Express official site DARPA XS 1 artist concept animation video 2014 Masten Space Systems Inc award notice US 3 million US government document June 27 2014 DARPA XS 1 artist concept animation video Retrieved from https en wikipedia org w index php title XS 1 spacecraft amp oldid 1213701962, wikipedia, wiki, book, books, library,

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