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{{Short description|US ethanol-oxygen rocket engine}} | ||
| {{Infobox rocket engine | |||
| |name=RS-88 | |||
| | image = RS-88 test firing.jpg | |||
| ⚫ | |||
| | caption = An RS-88 is fired at ] | |||
| |manufacturer=] | |||
| | name = RS-88 | |||
| |purpose=low cost throttleable booster engine | |||
| | purpose = | |||
| | last_flight = | |||
| | successor = | |||
| ⚫ | | country_of_origin = {{USA}} | ||
| | manufacturer = {{ubli | |||
| | Rocketdyne (1997–2005) | |||
| | ] (2005–2013) | |||
| | ] (2013–present) | |||
| }} | |||
| | designer = ] | |||
| | type = liquid | |||
| | status = Active | |||
| | fuel = ] / ]<br>] / ] (LAE variant) | |||
| | oxidiser = | |||
| | cycle = ] | |||
| | description = | |||
| | burn_time = | |||
| | used_in = ] | |||
| | thrust(SL) = {{cvt|220|kN}} (ethanol)<br>{{cvt|176.6|kN}} (hypergolic) | |||
| | thrust = | |||
| ⚫ | }} | ||
| The '''RS-88''' (Rocket System-88) is a ] engine designed and built in the United States by ] (later ] and then ]). Originally developed for NASA's Bantam System Technology program in 1997, the RS-88 burned ethanol fuel with liquid oxygen (LOX) as the oxidizer. It offered {{cvt|220|kN}} of thrust at sea level. | |||
| A ] derivative of the RS-88, fueled by monomethylhydrazine and nitrogen tetroxide, was chosen as the launch escape motor for the ] capsule. | |||
| |type=liquid | |||
| |fuel=] (Ethanol) | |||
| |oxidiser=] | |||
| == Origins and Testing == | |||
| |thrust(SL)={{convert|220|kN|lbf|abbr=on}} | |||
| The RS-88 stemmed from NASA's Bantam System Technology Project, part of the Low-Cost Technologies effort of the larger ].<ref>{{cite press release |url=http://science.ksc.nasa.gov/shuttle/nexgen/8-19awrd.htm |title=NASA Selects Four Companies to Demonstrate Low Cost Launch System Technologies |publisher=NASA |id=Release C97 |date=June 9, 1997 |url-status=dead |archive-url=https://web.archive.org/web/20111120044002/http://science.ksc.nasa.gov/shuttle/nexgen/8-19awrd.htm |archive-date=November 20, 2011 }}</ref> This project aimed to research and demonstrate technologies for a new, affordable launch system. While the program envisioned a technology demonstration flight in late 1999, it ultimately focused on engine development.<ref>{{cite press release |url=http://www.nasa.gov/centers/marshall/news/background/facts/lct.html |title=Low Cost Technologies |publisher=NASA |date=June 1997 |access-date=2012-06-01 |archive-date=2010-02-16 |archive-url=https://web.archive.org/web/20100216085118/http://www.nasa.gov/centers/marshall/news/background/facts/lct.html |url-status=dead }}</ref> | |||
| |thrust(Vac)= | |||
| |specific_impulse_vacuum= | |||
| |specific_impulse_sea_level= | |||
| |chamber_pressure= | |||
| |thrust_to_weight= | |||
| |cycle= | |||
| |diameter= | |||
| |height= | |||
| |Weight, dry={{convert|00|kg|abbr=on}} | |||
| ⚫ | }} | ||
| The '''RS-88''' is a liquid-fueled ] burning ] (]) as fuel, and using ] (LOX) as the oxidizer. It was designed and built by Rocketdyne, originally for the NASA Bantam System Technology program (1997). | |||
| In 2003, it was designated by Lockheed for their Pad Abort Demonstration (PAD) vehicle. | |||
| NASA tested the RS-88 in a series of 14 hot-fire tests, resulting in 55 seconds of successful engine operation in November and December 2003. | NASA tested the RS-88 in a series of 14 hot-fire tests, resulting in 55 seconds of successful engine operation in November and December 2003. | ||
| The RS-88 engine proved to be capable of {{convert|50000|lbf|kN|abbr=on}} of thrust at sea level. | |||
| The ''RS-88'' engine has been selected for usage as the ] Launch Escape System and is being tested by Boeing (2011).<ref>{{cite web|title=Test of Rocketdyne abort motor for Boeing crew capsule|url=http://www.youtube.com/watch?v=mOv1ew1GPKc|work=http://www.youtube.com|accessdate=24 November 2011}}</ref> | |||
| ⚫ | == |
||
| The Bantam System Technology Project, which is part of the Low Cost Technologies effort, teams NASA and its business partners to research and demonstrate technologies for a new low-cost launch system. A technology demonstration flight was targeted for late 1999.<ref>{{cite press release |url=http://www.nasa.gov/centers/marshall/news/background/facts/lct.html |title=Low Cost Technologies |publisher=NASA |date=June 1997}}</ref> | |||
| The ''RS-88'' engine was designed by Rocketdyne under NASA's Bantam program<ref>{{cite press release |url=http://science.ksc.nasa.gov/shuttle/nexgen/8-19awrd.htm |title=NASA Selects Four Companies to Demonstrate Low Cost Launch System Technologies |publisher=NASA |id=Release C97 |date=June 9, 1997}}</ref> which was the propulsion element of the Low Cost Technologies of the larger ]. | |||
| == Pad Abort Demonstration == | |||
| ] | |||
| The ''RS-88'' engine was modified and tested in 2003 <ref>{{cite press|title=Boeing Successfully Tests New Engine for NASA Program|publisher=Boeing|date=Jan 29, 2004|url=http://www.boeing.com/news/releases/2004/q1/nr_040129m.html}}</ref> for application on the Lockheed-Martin Pad Abort Demonstration (PAD) vehicle. Critical Design Review of the PAD propulsion module occurred in mid-2004, but the planned use of the vehicle in CEV development was evidently abandoned. Lockheed Martin's Pad Abort Demonstration (PAD) vehicle was originally scheduled for launch in late 2005 and would have carried four RS-88 engines. | |||
| == Rocketplane == | |||
| In January 2006 it was announced that NASA was loaning the ''RS-88'' rocket engine to ], of Oklahoma City, as part of an innovative industry partnership program.<ref>{{cite web|title=NASA Loans Engine to Industry Partner|publisher=NASA|date=Jan. 24, 2006|url=http://www.nasa.gov/home/hqnews/2006/jan/HQ_06034_Rocketplane_partners.html}}</ref> | |||
| NASA's Johnson Space Center, Houston, and the company signed a Space Act Agreement for use of an RS-88 engine in tests of its Rocketplane XP vehicle for three years. | |||
| The company will provide NASA with design, test and operational information from the development. The Rocketplane XP was a four-seat, modified Lear executive jet. | |||
| It would incorporate a rocket engine for acceleration to achieve a planned peak altitude of almost 300,000 feet. | |||
| "With NASA, the Federal Aviation Administration, and the support of local, state and federal governments, we hope to develop a safe, affordable and reusable spaceplane by integrating established technologies, such as the RS-88 engine," said Bob Seto, Rocketplane's vice president of engineering systems and analysis. According to Seto, the craft completed a preliminary design review in March 2005, and it was in the detail design phase. | |||
| In 2003, Lockheed Martin selected the RS-88 for their pad abort demonstration vehicle. NASA successfully tested the engine in a series of hot-fire tests, demonstrating its reliability. | |||
| Rockeplane filed for Chapter 7 bankruptcy in 2010.<ref>{{cite web|title=Former Oklahoma Rocketplane's bankruptcy may be last stop on itinerary|publisher=NewsOK.com|date=8/10/2010 |url=http://www.tulsaworld.com/business/article.aspx?subjectid=45&articleid=20100810_46_E1_CUTLIN977726}}</ref> | |||
| ⚫ | == Starliner Launch Escape System == | ||
| == Boeing CST-100 == | |||
| ]]] | |||
| ] | |||
| A hypergolic derivative of the RS-88, fueled by ] (MMH) and ], was chosen as the ] for the ] capsule.<ref>{{cite web|title=Test of Rocketdyne abort motor for Boeing crew capsule|url=https://www.youtube.com/watch?v=mOv1ew1GPKc|work=YouTube |last1=theworacle | date=15 March 2011 |accessdate=24 November 2011}}</ref> This variant, called the Launch Abort Engine (LAE), provides {{cvt|176.6|kN}} of thrust.<ref>{{Cite web|url=https://spaceflightnow.com/2015/11/27/aerojet-rocketdyne-wins-propulsion-contracts-worth-nearly-1-4-billion/|title=Aerojet Rocketdyne wins propulsion contracts worth nearly $1.4 billion |website=Spaceflight Now |date=November 27, 2015 |last=Clark|first=Stephen|language=en-US|access-date=2019-12-19}}</ref> Four LAE engines are used in Starliner's abort system to propel the capsule away from the launch vehicle in case of an emergency.<ref>{{cite web|title = PWR Analyzing Hot-Fire Tests For CST-100 Launch Abort Engine.|url = http://www.beyondearth.com/news-2/pwr-analyzing-cst-100-abort-engine-tests|work =Beyond Earth |date=Mar 22, 2012 |accessdate = 5 September 2015|url-status=dead|archive-url = https://web.archive.org/web/20150923184122/http://www.beyondearth.com/news-2/pwr-analyzing-cst-100-abort-engine-tests|archive-date = 23 September 2015}}</ref> | |||
| The launch escape system for Boeing's ] spacecraft plans to use the RS-88 (Bantam) engine.<ref>{{cite web|title=Test of Rocketdyne abort motor for Boeing crew capsule|url=http://www.youtube.com/watch?v=mOv1ew1GPKc|work=http://www.youtube.com|accessdate=24 November 2011}}</ref> | |||
| == See also == | == See also == | ||
| * ] | * ] | ||
| * ] | |||
| * ] | |||
| * ] | * ] | ||
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| == External links == | == External links == | ||
| {{commons category|RS-88 (rocket engine)}} | {{commons category|RS-88 (rocket engine)}} | ||
| * | * | ||
| * | * | ||
| {{Rocket |
{{Rocket engines}} | ||
| ] | ] | ||
| ] | |||
| ] | |||
| ] | |||
| ] | |||
Latest revision as of 04:39, 4 November 2024
US ethanol-oxygen rocket engine An RS-88 is fired at Stennis Space Center | |
| Country of origin |  United States |
|---|---|
| Designer | Rocketdyne |
| Manufacturer |
|
| Status | Active |
| Liquid-fuel engine | |
| Propellant | LOX / Ethanol MMH / NTO (LAE variant) |
| Cycle | Gas-generator |
| Performance | |
| Thrust, sea-level | 220 kN (49,000 lbf) (ethanol) 176.6 kN (39,700 lbf) (hypergolic) |
| Used in | |
| CST-100 Starliner | |
The RS-88 (Rocket System-88) is a liquid-fueled rocket engine designed and built in the United States by Rocketdyne (later Pratt & Whitney Rocketdyne and then Aerojet Rocketdyne). Originally developed for NASA's Bantam System Technology program in 1997, the RS-88 burned ethanol fuel with liquid oxygen (LOX) as the oxidizer. It offered 220 kN (49,000 lbf) of thrust at sea level.
A hypergolic derivative of the RS-88, fueled by monomethylhydrazine and nitrogen tetroxide, was chosen as the launch escape motor for the Boeing Starliner capsule.
Origins and Testing
The RS-88 stemmed from NASA's Bantam System Technology Project, part of the Low-Cost Technologies effort of the larger Advanced Space Transportation Program. This project aimed to research and demonstrate technologies for a new, affordable launch system. While the program envisioned a technology demonstration flight in late 1999, it ultimately focused on engine development.
NASA tested the RS-88 in a series of 14 hot-fire tests, resulting in 55 seconds of successful engine operation in November and December 2003.
In 2003, Lockheed Martin selected the RS-88 for their pad abort demonstration vehicle. NASA successfully tested the engine in a series of hot-fire tests, demonstrating its reliability.
Starliner Launch Escape System
A hypergolic derivative of the RS-88, fueled by monomethylhydrazine (MMH) and nitrogen tetroxide, was chosen as the launch escape motor for the Boeing Starliner capsule. This variant, called the Launch Abort Engine (LAE), provides 176.6 kN (39,700 lbf) of thrust. Four LAE engines are used in Starliner's abort system to propel the capsule away from the launch vehicle in case of an emergency.
See also
References
- "NASA Selects Four Companies to Demonstrate Low Cost Launch System Technologies" (Press release). NASA. June 9, 1997. Release C97. Archived from the original on November 20, 2011.
- "Low Cost Technologies" (Press release). NASA. June 1997. Archived from the original on 2010-02-16. Retrieved 2012-06-01.
- theworacle (15 March 2011). "Test of Rocketdyne abort motor for Boeing crew capsule". YouTube. Retrieved 24 November 2011.
- Clark, Stephen (November 27, 2015). "Aerojet Rocketdyne wins propulsion contracts worth nearly $1.4 billion". Spaceflight Now. Retrieved 2019-12-19.
- "PWR Analyzing Hot-Fire Tests For CST-100 Launch Abort Engine". Beyond Earth. Mar 22, 2012. Archived from the original on 23 September 2015. Retrieved 5 September 2015.
External links
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