RS-88: Difference between revisions

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			{{Short description\|US ethanol-oxygen rocket engine}}
	{{User sandbox}}
			{{Infobox rocket engine
	<!-- EDIT BELOW THIS LINE -->
			\| image = RS-88 test firing.jpg
	The '''RS-88''' was a ] designed and built by Rocketdyne originally for usage on Lockheed's Pad Abort Demonstration (PAD) vehicle.
			\| caption = An RS-88 is fired at ]
⚫	~~In 2003,~~ NASA tested the RS-88 in a series of 14 hot-fire tests, resulting in 55 seconds of successful engine operation.
			\| name = RS-88
	The RS-88 engine is capable of {{convert\|50000\|lbf\|kN\|abbr=on}} of thrust at sea level.
			\| purpose =
	The ''RS-88'' engine has been selected for usage as the ] Launch Escape System.
			\| last_flight =

			\| successor =
	== Development ==
			\| country_of_origin = {{USA}}
	The engine had originally been designed by Rocketdyne under NASA's BANTAM System Technology program<ref>{{cite press\|title=NASA Selects Four Companies to Demonstrate Low Cost Launch System Technologies\|publisher=NASA\|release=RELEASE: C97\|date=June 9, 1997\|url=http://science.ksc.nasa.gov/shuttle/nexgen/8-19awrd.htm}}</ref> which was one element of the ]
			\| manufacturer = {{ubli
	The engine was modified for application to the Lockheed-Martin PAD vehicle. Critical Design Review of the PAD propulsion module occurred in mid-2004 but 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.
			\| Rocketdyne (1997–2005)

			\| ] (2005–2013)
	In January 2006 it was announced that NASA was loaning the rocket engine to Rocketplane, of Oklahoma City, as part of an innovative industry partnership program.
			\| ] (2013–present)
	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.
			\| designer = ]
	It would incorporate a rocket engine for acceleration to achieve a planned peak altitude of almost 300,000 feet.
			\| type = liquid

			\| status = Active
	"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.
			\| 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.
	== Usage in Boeing CST-100 ==

	]
			== Origins and Testing ==
	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>
			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>

		⚫	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 ] (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>

	== See also ==		== See also ==
			* ]
	* ]
			* ]
	* ]

	== References ==		== References ==
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	== External links ==		== External links ==
			{{commons category\|RS-88 (rocket engine)}}
	*{{Dead link\|date=February 2010}}
			*
			*

			{{Rocket engines}}

	]		]
			]
			]
			]
			]

Latest revision as of 04:39, 4 November 2024

US ethanol-oxygen rocket engine

RS-88
Liquid-fuel engine
An RS-88 is fired at Stennis Space Center
Country of origin	United States
Designer	Rocketdyne
Manufacturer	Rocketdyne (1997–2005) Pratt & Whitney Rocketdyne (2005–2013) Aerojet Rocketdyne (2013–present)
Status	Active
Propellant	LOX / Ethanol MMH / NTO (LAE variant)
Cycle	Gas-generator
Performance
Thrust, sea-level	220 kN (49,000 lb_f) (ethanol) 176.6 kN (39,700 lb_f) (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 lb_f) 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 lb_f) 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.

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

Rocket engines and solid motors for orbital launch vehicles

Comparison of orbital rocket engines

Liquid
fuel

Cryogenic

Hydrolox (LH₂ / LOX)	China YF-73 YF-75 YF-75D YF-77 YF-79 YF-90 Europe HM7B Vinci Vulcain India CE-7.5 CE-20 Japan LE-5 LE-7 LE-9 Russia KVD-1 (RD-56) RD-0120 RD-0146 United States BE-3U BE-7 J-2 RL10 RS-25 RS-68
Methalox (CH₄ / LOX)	China BF-20 Lingyun Longyun TQ-11 TQ-12 TQ-15A YF-209 YF-215 United States BE-4 Raptor Archimedes Aeon 1 Aeon R Russia RD-0169 Europe Prometheus M-10