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Air launch

January 01, 1970

"airlaunch" redirects here. For the company, see AirLaunch.

Air launching is the practice of releasing a rocket, missile, parasite aircraft or other aircraft payload from a mother ship or launch aircraft.[1] The payload craft or missile is often tucked under the wing of the larger mother ship and then "dropped" while in flight.[2] It may also be stored within a bomb bay, beneath the main fuselage or even on the back of the carrier aircraft, as in the case of the D-21 drone.[3] Air launching provides several advantages over ground launching, giving the smaller craft an altitude and range boost, while saving it the weight of the fuel and equipment needed to take off on its own.[4]

A Boeing X-43 being air launched from under the wing of a B-52 Stratofortress.

History edit

 
A Sopwith Camel secured beneath the British HM Airship 23r.

One of the earliest uses of air launching used an airship as a carrier and docking station for biplane parasite fighters. These planes would connect to their mothership through a trapeze-like rig, mounted to the top of the upper wing, that attached to a hook dangling from the bottom of the dirigible above.[5] Fighters could be both launched and retrieved this way, giving the airship the speed and striking power of fixed-wing craft, while giving the fighters the range and lingering time of an airship. With advances in airplane technology, especially in range, the value of a dirigible mothership was reduced and the concept became obsolete.[6]

The parasite fighter concept was later revived several times, in an attempt to solve the problem of how to protect bombers from fighter attack. The Convair B-36 was used to air launch several prototype fighters for defense, but none offered performance that could match ground-launched fighters.[5] Even the largest bomber ever mass-produced was too small a mothership for the jet age. Docking also presented its own plethora of problems.[7]

Air launch is the standard way to launch air-to-surface missiles and air-to-air missiles and is mainly used for rocket-powered craft, allowing them to conserve their fuel until lifted to altitude by a larger aircraft. The B-29, B-50, and B-52 have all served in the carrier role for research programs such as the Bell X-1 and X-15.[8][9]

In the 1960s the SR-71 aircraft was used to launch the Lockheed D-21/M-21 drone to speeds of up to Mach 3. However, this added a degree of difficulty due to the shock wave pattern around an aircraft at supersonic speeds. After three successful tests, the fourth resulted in a collision with the carrier aircraft, in which both craft were destroyed and one crew member drowned. The project was subsequently abandoned.[10][11]

During the development of the Space Shuttle orbiter in the 1970s, NASA used two modified Boeing 747 airliners, known as the Shuttle Carrier Aircraft, to launch the Space Shuttle Enterprise, a crewed atmospheric test vehicle used to test the orbiter's approach and landing capabilities. These aircraft were subsequently used throughout the Space Shuttle Program to transport the shuttles across long distances.[12][13]

The Pegasus launch vehicle became the first air-launched orbital rocket when it was launched on April 5, 1990 by the private company Orbital Sciences Corporation (now a part of Northrop Grumman), from a NASA-owned B-52 Stratofortress. It has flown more than 40 times since, launched mostly from the company's own Lockheed L-1011 known as Stargazer. Orbital Sciences was developing the Pegasus II launcher that would have dropped from the purpose-built Scaled Composites Stratolaunch. Pegasus's capacity to low Earth orbit was projected to be 13,500 pounds (6,100 kg).[14][15]

In the early 2000s, the B-52 was used to launch the X-43 hypersonic testbed aircraft. Recently, the air launch method has gained popularity with commercial launch providers. The Ansari X-Prize $10 million purse was won by a team led by Burt Rutan and Paul Allen for the successful launch of SpaceShipOne twice in a row in 2 weeks, which where the criteria.[16][17]

In 2010, the SpaceShipTwo launch vehicle began launching. It was the successor the SpaceShipOne launch vehicle, which was retired in 2004. The first SpaceShipTwo aircraft, the VSS Enterprise flew 35 flights successfully from 2010 to 2014. However, on 31 October 2014, the vehicle was destroyed in-flight after an unintentional feathering. Michael Alsbury was killed and Peter Siebold was severely injured.[18] In 2016, another ship, the VSS Unity conducted it's maiden flight, which went smoothly. The VSS Unity conducted 20 test flights. The last one reached space, but without commercial crew onboard.[19] On 11 July 2021, SpaceShipTwo launched 6 people to space. 2 were pilots and the rest tourists.[20][21] Virgin Galactic repeatdly announced plans to refly the SpaceShipTwo. These plans have been delayed by more than a year and a half. It is currently expected to fly no earlier than the second quarter of 2023.[22][23]

In 2021, Virgin Galactic announced plans for a SpaceShipThree. This would provide point-to-point transportation across the world. Two ships, the VSS Imagine and VSS Inspire are planned.[24][25] In 2022, Virgin Galactic announced plans for the new Delta-class launch vehicle. This would be able to reach orbit. It is expected to launch in 2026.[26][27]

See also edit

References edit

  1. ^ Alireza Forouzandeh Tabrizi (May 2015). "Air Launch" (PDF). San Jose State University. Retrieved April 11, 2023.
  2. ^ Rebecca A. Mitchell. "A Conceptual Analysis of Spacecraft Air Launch Methods" (PDF). University of Colorado. Retrieved April 11, 2023.
  3. ^ "Lockheed D-21B Drone | The Museum of Flight". Museum of Flight. Retrieved 2023-04-09.
  4. ^ "Pegasus Rocket". Northrop Grumman. Retrieved 2023-04-09.
  5. ^ a b "That time the Air Force designed a tiny fighter jet to launch from strategic bombers". Task & Purpose. 2022-10-27. Retrieved 2023-04-09.
  6. ^ Miroshnychenko, Yevhen (2022-12-21). "З літака у космос. Історія та перспективи систем повітряного старту". Журнал The Universemagazine Space Tech. Retrieved 2023-04-09.
  7. ^ "Parasite Fighters: 40 Years Were Spent Trying To Make Them Work". Disciples of Flight. 2017-01-24. Retrieved 2023-04-09.
  8. ^ "Definition of AIR-LAUNCH". www.merriam-webster.com. Retrieved 2023-04-09.
  9. ^ "A-10C Thunderbolt II". Air Force. Retrieved 2023-04-09.
  10. ^ "Lockheed SR-71A". National Museum of the United States Air Force™. Retrieved 2023-04-09.
  11. ^ "Creating the Blackbird". Lockheed Martin. 2021-01-10. Retrieved 2023-04-09.
  12. ^ Gibbs, Yvonne (2015-08-11). "Shuttle Carrier Aircraft". NASA. Retrieved 2023-04-09.
  13. ^ Wong, Daniel (2022-09-27). "The Story Of NASA's Boeing 747 Shuttle Carrier Aircraft". Simple Flying. Retrieved 2023-04-09.
  14. ^ KSC, Elaine Marconi. "NASA - Pegasus: Countdown 101". www.nasa.gov. Retrieved 2023-04-09.
  15. ^ "Pegasus XL Launch Vehicle | National Air and Space Museum". airandspace.si.edu. Retrieved 2023-04-09.
  16. ^ "XPRIZE Foundation Ansari Prize | XPRIZE Foundation". XPRIZE. Retrieved 2023-04-09.
  17. ^ XPRIZE. "Mojave Aerospace Ventures Wins The Competition That Started". XPRIZE. Retrieved 2023-04-09.
  18. ^ Tariq Malik (July 28, 2015). "Deadly SpaceShipTwo Crash Caused by Co-Pilot Error: NTSB". Scientific American. Retrieved May 12, 2023.
  19. ^ "Virgin Galactic rocket plane flies to edge of space". BBC News. 2021-05-22. Retrieved 2023-04-09.
  20. ^ Space com Staff (2021-07-14). "In photos: Virgin Galactic's 1st fully crewed spaceflight with billionaire Richard Branson". Space.com. Retrieved 2023-04-09.
  21. ^ Elizabeth Howell (2021-07-10). "Meet the crew launching on Virgin Galactic's 1st fully crewed flight Unity 22". Space.com. Retrieved 2023-04-09.
  22. ^ "What's next for Virgin Galactic? CEO discusses flight plans in earnings call - Albuquerque Journal". www.abqjournal.com. Retrieved 2023-04-09.
  23. ^ Foust, Jeff (2023-03-01). "Virgin Galactic in final phases of return to flight". SpaceNews. Retrieved 2023-04-09.
  24. ^ Mike Wall (2021-03-30). "Meet VSS Imagine: Virgin Galactic unveils its first SpaceShip III spacecraft". Space.com. Retrieved 2023-04-09.
  25. ^ "Virgin Galactic unveils its first 'SpaceShip III' suborbital spacecraft". SpaceFlight Insider. 2021-04-05. Retrieved 2023-04-09.
  26. ^ "Virgin Galactic Announces Primary Suppliers for Delta Class Spaceships". www.virgingalactic.com. Retrieved 2023-04-09.
  27. ^ Patrascu, Daniel (2022-11-03). "Virgin Galactic Delta Six-Passenger Spaceship to Enter Production in 2023, Bell on Deck". autoevolution. Retrieved 2023-04-09.

External links edit

  • A Study of Air Launch Methods for RLVs (AIAA 2001)
  • . Archived from the original on 24 July 2011.

January 01, 1970
launch, airlaunch, redirects, here, company, airlaunch, practice, releasing, rocket, missile, parasite, aircraft, other, aircraft, payload, from, mother, ship, launch, aircraft, payload, craft, missile, often, tucked, under, wing, larger, mother, ship, then, d. airlaunch redirects here For the company see AirLaunch Air launching is the practice of releasing a rocket missile parasite aircraft or other aircraft payload from a mother ship or launch aircraft 1 The payload craft or missile is often tucked under the wing of the larger mother ship and then dropped while in flight 2 It may also be stored within a bomb bay beneath the main fuselage or even on the back of the carrier aircraft as in the case of the D 21 drone 3 Air launching provides several advantages over ground launching giving the smaller craft an altitude and range boost while saving it the weight of the fuel and equipment needed to take off on its own 4 A Boeing X 43 being air launched from under the wing of a B 52 Stratofortress Contents 1 History 2 See also 3 References 4 External linksHistory edit nbsp A Sopwith Camel secured beneath the British HM Airship 23r One of the earliest uses of air launching used an airship as a carrier and docking station for biplane parasite fighters These planes would connect to their mothership through a trapeze like rig mounted to the top of the upper wing that attached to a hook dangling from the bottom of the dirigible above 5 Fighters could be both launched and retrieved this way giving the airship the speed and striking power of fixed wing craft while giving the fighters the range and lingering time of an airship With advances in airplane technology especially in range the value of a dirigible mothership was reduced and the concept became obsolete 6 The parasite fighter concept was later revived several times in an attempt to solve the problem of how to protect bombers from fighter attack The Convair B 36 was used to air launch several prototype fighters for defense but none offered performance that could match ground launched fighters 5 Even the largest bomber ever mass produced was too small a mothership for the jet age Docking also presented its own plethora of problems 7 Air launch is the standard way to launch air to surface missiles and air to air missiles and is mainly used for rocket powered craft allowing them to conserve their fuel until lifted to altitude by a larger aircraft The B 29 B 50 and B 52 have all served in the carrier role for research programs such as the Bell X 1 and X 15 8 9 In the 1960s the SR 71 aircraft was used to launch the Lockheed D 21 M 21 drone to speeds of up to Mach 3 However this added a degree of difficulty due to the shock wave pattern around an aircraft at supersonic speeds After three successful tests the fourth resulted in a collision with the carrier aircraft in which both craft were destroyed and one crew member drowned The project was subsequently abandoned 10 11 During the development of the Space Shuttle orbiter in the 1970s NASA used two modified Boeing 747 airliners known as the Shuttle Carrier Aircraft to launch the Space Shuttle Enterprise a crewed atmospheric test vehicle used to test the orbiter s approach and landing capabilities These aircraft were subsequently used throughout the Space Shuttle Program to transport the shuttles across long distances 12 13 The Pegasus launch vehicle became the first air launched orbital rocket when it was launched on April 5 1990 by the private company Orbital Sciences Corporation now a part of Northrop Grumman from a NASA owned B 52 Stratofortress It has flown more than 40 times since launched mostly from the company s own Lockheed L 1011 known as Stargazer Orbital Sciences was developing the Pegasus II launcher that would have dropped from the purpose built Scaled Composites Stratolaunch Pegasus s capacity to low Earth orbit was projected to be 13 500 pounds 6 100 kg 14 15 In the early 2000s the B 52 was used to launch the X 43 hypersonic testbed aircraft Recently the air launch method has gained popularity with commercial launch providers The Ansari X Prize 10 million purse was won by a team led by Burt Rutan and Paul Allen for the successful launch of SpaceShipOne twice in a row in 2 weeks which where the criteria 16 17 In 2010 the SpaceShipTwo launch vehicle began launching It was the successor the SpaceShipOne launch vehicle which was retired in 2004 The first SpaceShipTwo aircraft the VSS Enterprise flew 35 flights successfully from 2010 to 2014 However on 31 October 2014 the vehicle was destroyed in flight after an unintentional feathering Michael Alsbury was killed and Peter Siebold was severely injured 18 In 2016 another ship the VSS Unity conducted it s maiden flight which went smoothly The VSS Unity conducted 20 test flights The last one reached space but without commercial crew onboard 19 On 11 July 2021 SpaceShipTwo launched 6 people to space 2 were pilots and the rest tourists 20 21 Virgin Galactic repeatdly announced plans to refly the SpaceShipTwo These plans have been delayed by more than a year and a half It is currently expected to fly no earlier than the second quarter of 2023 22 23 In 2021 Virgin Galactic announced plans for a SpaceShipThree This would provide point to point transportation across the world Two ships the VSS Imagine and VSS Inspire are planned 24 25 In 2022 Virgin Galactic announced plans for the new Delta class launch vehicle This would be able to reach orbit It is expected to launch in 2026 26 27 See also editComposite aircraft Parasite aircraft Mother ship Pegasus rocket Air launch to orbit Airborne aircraft carrier Rocket sled launch Megascale engineering SpaceShipOne SpaceShipTwo LauncherOne List of Virgin Galactic launchesReferences edit Alireza Forouzandeh Tabrizi May 2015 Air Launch PDF San Jose State University Retrieved April 11 2023 Rebecca A Mitchell A Conceptual Analysis of Spacecraft Air Launch Methods PDF University of Colorado Retrieved April 11 2023 Lockheed D 21B Drone The Museum of Flight Museum of Flight Retrieved 2023 04 09 Pegasus Rocket Northrop Grumman Retrieved 2023 04 09 a b That time the Air Force designed a tiny fighter jet to launch from strategic bombers Task amp Purpose 2022 10 27 Retrieved 2023 04 09 Miroshnychenko Yevhen 2022 12 21 Z litaka u kosmos Istoriya ta perspektivi sistem povitryanogo startu Zhurnal The Universemagazine Space Tech Retrieved 2023 04 09 Parasite Fighters 40 Years Were Spent Trying To Make Them Work Disciples of Flight 2017 01 24 Retrieved 2023 04 09 Definition of AIR LAUNCH www merriam webster com Retrieved 2023 04 09 A 10C Thunderbolt II Air Force Retrieved 2023 04 09 Lockheed SR 71A National Museum of the United States Air Force Retrieved 2023 04 09 Creating the Blackbird Lockheed Martin 2021 01 10 Retrieved 2023 04 09 Gibbs Yvonne 2015 08 11 Shuttle Carrier Aircraft NASA Retrieved 2023 04 09 Wong Daniel 2022 09 27 The Story Of NASA s Boeing 747 Shuttle Carrier Aircraft Simple Flying Retrieved 2023 04 09 KSC Elaine Marconi NASA Pegasus Countdown 101 www nasa gov Retrieved 2023 04 09 Pegasus XL Launch Vehicle National Air and Space Museum airandspace si edu Retrieved 2023 04 09 XPRIZE Foundation Ansari Prize XPRIZE Foundation XPRIZE Retrieved 2023 04 09 XPRIZE Mojave Aerospace Ventures Wins The Competition That Started XPRIZE Retrieved 2023 04 09 Tariq Malik July 28 2015 Deadly SpaceShipTwo Crash Caused by Co Pilot Error NTSB Scientific American Retrieved May 12 2023 Virgin Galactic rocket plane flies to edge of space BBC News 2021 05 22 Retrieved 2023 04 09 Space com Staff 2021 07 14 In photos Virgin Galactic s 1st fully crewed spaceflight with billionaire Richard Branson Space com Retrieved 2023 04 09 Elizabeth Howell 2021 07 10 Meet the crew launching on Virgin Galactic s 1st fully crewed flight Unity 22 Space com Retrieved 2023 04 09 What s next for Virgin Galactic CEO discusses flight plans in earnings call Albuquerque Journal www abqjournal com Retrieved 2023 04 09 Foust Jeff 2023 03 01 Virgin Galactic in final phases of return to flight SpaceNews Retrieved 2023 04 09 Mike Wall 2021 03 30 Meet VSS Imagine Virgin Galactic unveils its first SpaceShip III spacecraft Space com Retrieved 2023 04 09 Virgin Galactic unveils its first SpaceShip III suborbital spacecraft SpaceFlight Insider 2021 04 05 Retrieved 2023 04 09 Virgin Galactic Announces Primary Suppliers for Delta Class Spaceships www virgingalactic com Retrieved 2023 04 09 Patrascu Daniel 2022 11 03 Virgin Galactic Delta Six Passenger Spaceship to Enter Production in 2023 Bell on Deck autoevolution Retrieved 2023 04 09 External links editA Study of Air Launch Methods for RLVs AIAA 2001 AirLaunch LLC information on the QuickReach launcher project Archived from the original on 24 July 2011 Retrieved from https en wikipedia org w index php title Air launch amp oldid 1190923187, wikipedia, wiki, book, books, library,

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