CST-100 Starliner

CST-100 Starliner

Rendering of the CST-100 Starliner
Manufacturer Boeing
Country of origin United States
Operator Boeing
Bigelow Aerospace
Applications Crew Transfer Vehicle
Design life
  • 60 hours (free flight)[1]
  • 210 days (docked)[1][2]
  • Diameter (capsule max.): 4.56 m (15.0 ft)[3]
  • Length (CM+SM): 5.03 m (16.5 ft)[3]
Regime Low Earth
Status In development

The CST-100 Starliner (Crew Space Transportation) crew capsule is a spacecraft design under construction by Boeing in collaboration with Bigelow Aerospace as their entry for NASA's Commercial Crew Development (CCDev) program. Its primary mission is to transport crew to the International Space Station[4] and to private space stations such as the proposed Bigelow Aerospace Commercial Space Station.[5]

It is similar to the Orion, a spacecraft being built for NASA by Lockheed Martin.[6] The capsule has a diameter of 4.56 meters (15.0 ft),[3] which is slightly larger than the Apollo command module and smaller than the Orion capsule.[7] The Starliner is to support larger crews of up to seven people and is designed to be able to remain on-orbit for up to seven months with reusability of up to ten missions.[8] It is to be compatible with multiple launch vehicles, including the Atlas V, Delta IV, and Falcon 9, as well as the planned Vulcan.[9] The initial launch vehicle would be the Atlas V,[10] launched from SLC-41 at Cape Canaveral Air Force Station, Florida.

In the first phase of its CCDev program NASA awarded Boeing US$18 million for preliminary development of the spacecraft.[11] In the second phase Boeing was awarded $93 million for further development.[12] On August 3, 2012, NASA announced the award of $460 million to Boeing to continue work on the CST-100 under the Commercial Crew Integrated Capability (CCiCap) Program.[13] On September 16, 2014, NASA selected the CST-100, along with SpaceX's Dragon V2, for the Commercial Crew Transportation Capability (CCtCap) program, with an award of $4.2 billion.[14] The spacecraft is expected to fly unmanned in June 2018, have a first crewed test flight in August 2018, and ferry two astronauts to the ISS for the first fully operational flight in December 2018.[15]



The design draws upon Boeing's experience with NASA's Apollo, Space Shuttle and ISS programs as well as the Orbital Express project sponsored by the Department of Defense.[7] The CST-100 has no Orion heritage, but it is sometimes confused with the earlier and similar Orion-derived Orion Lite proposal that Bigelow was reportedly working on with technical assistance from Lockheed Martin.[16] It will use the NASA Docking System for docking and use the Boeing Lightweight Ablator (BLA) for its heatshield.[17][18][19]


CST-100 pressure vessel at the former Orbiter Processing Facility-3 in October 2011
CST-100 crew mock up
Wind tunnel testing of CST-100's outer mold line

The CST-100 name was first used when the capsule was revealed to the public by Bigelow Aerospace CEO Robert Bigelow in June 2010.[20] The letters CST stand for Crew Space Transportation.[21] Although it has been reported that the number 100 in the name stands for 100 km, the height of the Kármán line which is one of several definitions of the boundary of space.,[22][23] the naming was in fact an arbitrary designation created by the corporate office. The Rocketdyne RS-88 (Bantam) engine will be used for its launch escape system.[24]

Receiving the full fixed-price payments for the CCDev Phase 1 Space Act Agreement required a set of specific milestones to be met during 2010:[25]

As of July 2010, Boeing stated that the capsule could be operational in 2015 with sufficient near-term approvals and funding, but also indicated they would proceed with development of the CST-100 only if NASA implemented the commercial crew transport initiative that was announced by the Obama administration in its FY11 budget request. Boeing executive Roger Krone stated that NASA investment would allow Boeing to close the business case, while this would be very difficult without NASA. In addition a second destination besides the ISS would be needed to close the business case and Krone said that cooperation with Bigelow was crucial for this.[7]

Boeing was awarded a $92.3 million contract by NASA in April 2011 to continue to develop the CST-100 under CCDev phase 2.[26] On August 3, 2012, NASA announced the award of $460 million to Boeing to continue work on the CST-100 under the Commercial Crew Integrated Capability (CCiCap) Program.[13]

On October 31, 2011, NASA announced that through a partnership with Space Florida, the Orbiter Processing Facility-3 at Kennedy Space Center would be leased to Boeing for manufacture and test of CST-100 spacecraft.[27]

On September 16, 2014, NASA chose Boeing (CST-100) and SpaceX (Dragon V2) as the two companies that will be funded to develop systems to transport U.S. government crews to and from the International Space Station. Boeing won a $4.2 billion contract to complete and certify CST-100 spacecraft by 2017, while SpaceX won a $2.6 billion contract to complete and certify their crewed Dragon spacecraft. The contracts include at least one crewed flight test with at least one NASA astronaut aboard. Once the Starliner achieves NASA certification, the contract requires Boeing to conduct at least two, and as many as six, crewed missions to the space station.[28] NASA's William H. Gerstenmaier considers the CST-100 proposal as stronger than the two others.[29]

Part of the agreement with NASA allows Boeing to sell seats for space tourists. Boeing proposed including one seat per flight for a space flight participant at a price that would be competitive with what Roscosmos charges tourists.[30]

On September 4, 2015, Boeing announced that the CST-100 would officially be called the CST-100 Starliner, a name that follows the conventions of the 787 Dreamliner produced by Boeing Commercial Airplanes.[31] In November 2015, NASA announced it had dropped Boeing from consideration in the multibillion-dollar Commercial Resupply Services second-phase competition to fly cargo to the International Space Station.[32]

In May 2016, Boeing delayed their scheduled first launch of a CST-100 from 2017 into early 2018.[33][34]

In October 2016, Boeing delayed its commercial crew development and test program by six months, from early 2018 to late 2018, following supplier holdups and a production problem on the second CST-100. They are hoping to fly NASA astronauts to the ISS by December 2018.[34][35]


Test of the CST-100 capsule at Delamar Dry Lake, Nevada with airbags deployed in 2012.

A variety of validation tests are underway on the test article.

In September 2011, Boeing announced the completion of a set of ground drop tests to validate the design of the air bag cushioning system. The air bags are located underneath the heat shield of the CST-100, which is designed to be separated from the capsule while under parachute descent at about 5,000 feet (1,500 m) altitude. The air bags are deployed by filling with a mixture of compressed Nitrogen and Oxygen gas, not with the pyro-explosive mixture sometimes used in automotive air bags. The tests were carried out in the Mojave Desert of southeast California, at ground speeds between 10 and 30 miles per hour (16 and 48 km/h) in order to simulate cross wind conditions at the time of landing. Bigelow Aerospace built the mobile test rig and conducted the tests.[21]

Test firing of the RS-88 in December 2003

In April 2012, Boeing dropped a mock-up of its CST-100 commercial crew capsule over the Nevada desert at the Delamar Dry Lake near Alamo, Nevada, successfully testing the craft's three main landing parachutes from 11,000 feet (3,400 m).[36]

On August 19, 2013 (National Aviation Day), Boeing announced that two NASA astronauts evaluated communications, ergonomics and crew-interface aspects of the CST-100, showing how future astronauts will operate in the spacecraft as it transports them to the International Space Station and other low Earth orbit destinations.[37]

As of February 2015 the spacecraft was deemed on schedule for its flight test programme to be completed in 2017 and start ferrying astronauts to the ISS.[38] However, Boeing reported on May 11, 2016, that their plans would slip by eight months due to the need to reduce the mass of the spacecraft and aerodynamics issues anticipated during launch and ascent with the Atlas V carrier rocket.[39]

Consequently, the pad abort test originally scheduled for February 2017[38] was pushed back to October 2017.[39] An uncrewed test mission to the ISS, Boe-OFT, was rescheduled to December 2017[39] and would last 30 days.[40] The first crewed flight, Boe-CFT, is planned for February 2018[39] and would last 14 days, carrying one NASA astronaut and one Boeing test pilot to the ISS.[40]

Technology partners

See also


  1. 1 2 Reiley, Keith; Burghardt, Michael; Wood, Michael; Ingham, Jay; Lembeck, Michael (2011). Design Considerations for a Commercial Crew Transportation System (PDF). AIAA SPACE 2011 Conference & Exposition. September 27–29, 2011. Long Beach, California. doi:10.2514/6.2011-7101.
  2. Carreau, Mark (July 24, 2013). "Boeing Refines CST-100 Commercial Crew Capsule Approach". Aviation Week. Retrieved May 8, 2014.
  3. 1 2 3 Burghardt, Mike (August 2011). "Boeing CST-100: Commercial Crew Transportation System" (PDF). Boeing. Retrieved May 8, 2014.
  4. Memi, Edmund G.; Morgan, Adam K. (September 23, 2009). "Boeing Submits Proposal for NASA Commercial Crew Transport System" (Press release). Boeing.
  5. "Orbital Complex Construction". Bigelow Aerospace. Retrieved July 15, 2010.
  6. Chow, Denise (June 25, 2010). "New Boeing Spaceship Targets Commercial Missions". Space.com.
  7. 1 2 3 Clark, Stephen (July 21, 2010). "Boeing space capsule could be operational by 2015". Spaceflight Now. Retrieved September 18, 2011.
  8. "Boeing: Crew Space Transportation (CST) System". Boeing. Retrieved January 25, 2016.
  9. Lindenmoyer, Alan (2010). Commercial Crew and Cargo Program (PDF). 13th Annual FAA Commercial Space Transportation Conference. February 10–11, 2010. Arlington, Virginia. Archived from the original (PDF) on March 5, 2010.
  10. Memi, Edmund G.; Rye, Jessica F. (August 4, 2011). "Boeing Selects Atlas V Rocket for Initial Commercial Crew Launches" (Press release). Boeing. Retrieved October 29, 2011.
  11. Memi, Edmund G.; Gold, Michael N. (February 2, 2010). "NASA Selects Boeing for American Recovery and Reinvestment Act Award to Study Crew Capsule-based Design" (Press release). Boeing.
  12. Morring, Jr., Frank (April 25, 2011). "Five Vehicles Vie For Future Of U.S. Human Spaceflight". Aviation Week. Archived from the original on May 9, 2014. the CCDev-2 awards, ... went to Blue Origin, Boeing, Sierra Nevada Corp. and Space Exploration Technologies Inc. (SpaceX).
  13. 1 2 "Boeing, SpaceX and Sierra Nevada Win CCiCAP Awards". SpaceNews. August 3, 2012.
  14. "Boeing and SpaceX Selected to Build America's New Crew Space Transportation System". NASA. September 16, 2014. Retrieved April 6, 2015.
  15. http://www.parabolicarc.com/2016/10/11/boeing-delays-cst100-starliner-operational-flight-december-2018/
  16. Klamper, Amy (August 14, 2009). "Company pitches 'lite' spaceship to NASA". NBC News. Retrieved September 7, 2009.
  17. Grondin, Yves-A. (August 5, 2013). "NASA Outlines its Plans for Commercial Crew Certification". NASA Spaceflight.
  18. Commercial Space Flight Panel. YouTube.com. SpaceUp Houston. 2011.
  19. Messier, Doug (March 23, 2011). "Update on Boeing CST-100 Crew Program". Parabolic Arc.
  20. Gedmark, John; Gold, Mike (June 16, 2010). "Bigelow Aerospace Joins the Commercial Spaceflight Federation" (Press release). Commercial Spaceflight Federation.
  21. 1 2 Memi, Edmund G. (September 12, 2011). "Space capsule tests aim to ensure safe landings". Boeing. Retrieved September 18, 2011.
  22. Memi, Edmund G.; Morgan, Adam K. (July 19, 2010). "Boeing CST-100 Spacecraft to Provide Commercial Crew Transportation Services" (Press release). Boeing.
  23. Chow, Denise (July 19, 2010). "New Spaceship Could Fly People to Private Space Stations". Space.com.
  24. Test of Rocketdyne abort motor for Boeing crew capsule. YouTube.com. Retrieved November 24, 2011.
  25. "Space Act Agreement Between National Aeronautics and Space Administration and The Boeing Company for Commercial Crew Development (CCDev)" (PDF). NASA. February 2010.
  26. Dean, James (April 18, 2011). "NASA awards $270 million for commercial crew efforts". Florida Today. The Flame Trench. Archived from the original on April 19, 2011.
  27. Weaver, David; Curie, Michael; Philman, Amber; Lange, Tina; Korn, Paula (October 31, 2011). "NASA Signs Agreement with Space Florida to Reuse Kennedy Facilities" (Press release). NASA.
  28. Schierholz, Stephanie; Martin, Stephanie (September 16, 2014). "NASA Chooses American Companies to Transport U.S. Astronauts to International Space Station". NASA. Retrieved September 18, 2014.
  29. Norris, Guy (October 11, 2014). "Why NASA Rejected Sierra Nevada's Commercial Crew Vehicle". Aviation Week. Archived from the original on October 13, 2014. Retrieved October 13, 2014.
  30. Klotz, Irene (September 17, 2014). "Boeing's 'space taxi' includes seat for a tourist". Reuters. Retrieved August 6, 2015.
  31. Clark, Stephen (September 4, 2015). "Enter the Starliner: Boeing names its commercial spaceship". Spaceflight Now. Retrieved September 4, 2015.
  32. Rhian, Jason (November 6, 2015). "NASA delays CRS 2 awards again, drops Boeing from consideration". Spaceflight Insider. Retrieved November 21, 2015.
  33. http://arstechnica.com/science/2016/05/boeings-first-flight-slips-its-now-up-to-spacex-to-wean-nasa-off-russia/
  34. 1 2 http://arstechnica.com/science/2016/10/boeing-delays-starliner-again-casting-doubt-on-commercial-flights-in-2018/
  35. Norris, Guy (October 10, 2016). "Boeing Delays CST-100, Still Targets 2018 ISS Mission". Aviation Week & Space Technology. Retrieved October 11, 2016.
  36. Clark, Stephen (April 3, 2012). "Parachutes for Boeing crew capsule tested over Nevada". Spaceflight Now. Retrieved April 3, 2012.
  37. "Boeing Space Capsule One Step Closer to Orbit". NYSE Big Stage. August 19, 2013.
  38. 1 2 Hardwood, William (January 27, 2015). "Boeing, SpaceX on track for commercial crew flights to station in 2017". Spaceflight Now. Retrieved May 7, 2015.
  39. 1 2 3 4 Foust, Jeff (May 12, 2016). "Boeing delays first crewed CST-100 flight to 2018". SpaceNews.
  40. 1 2 Bergin, Chris (March 18, 2015). "Commercial crew demo missions manifested for Dragon 2 and CST-100". NASA Spaceflight. Retrieved May 7, 2015.
Wikimedia Commons has media related to CST-100 (spacecraft).
This article is issued from Wikipedia - version of the 12/1/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.