RS-88: Difference between revisions

Browse history interactively ← Previous editContent deleted Content addedVisual WikitextInline

Revision as of 01:24, 13 May 2022 editFull Shunyata (talk \| contribs)Extended confirmed users3,107 editsNo edit summary← Previous edit		Latest revision as of 04:39, 4 November 2024 edit undoHeyElliott (talk \| contribs)Extended confirmed users119,495 edits Added info to refs, ceTag: 2017 wikitext editor
(11 intermediate revisions by 7 users not shown)
Line 1:		Line 1:
	{{Short description\|US ethanol-oxygen rocket engine}}		{{Short description\|US ethanol-oxygen rocket engine}}
	{{Infobox rocket engine		{{Infobox rocket engine
	\| image= RS-88 test firing.jpg		\| image = RS-88 test firing.jpg
		⚫	\| caption = An RS-88 is fired at ]
	\| image_size= 300
			\| name = RS-88
⚫	\| caption= An RS-88 is fired at ]
			\| purpose =
	\| name= RS-88
		⚫	\| last_flight =
	\| purpose= Developed into an abort motor for the ]
			\| successor =
⚫	\| last_flight=
		⚫	\| country_of_origin = {{USA}}
	\| successor=
			\| manufacturer = {{ubli
⚫	\| country_of_origin= ~~United~~ ~~States~~
	\| ~~manufacturer=~~ ]		\| Rocketdyne (1997–2005)
			\| ] (2005–2013)
	\| designer=
			\| ] (2013–present)
	\| type=Liquid
			}}
⚫	\| status= Active
			\| designer = ]
⚫	\| fuel= ] or ] / ] (LAE variant)
			\| type = liquid
	\| oxidiser= ]
		⚫	\| status = Active
⚫	\| cycle=]
		⚫	\| fuel = ] / ]<br>] / ] (LAE variant)
⚫	\| description=
			\| oxidiser =
	\| burn_time=
		⚫	\| cycle = ]
⚫	\| used_in= ]
		⚫	\| description =
	\|thrust=220kN (ethanol) or 176.6kN (])}}
			\| 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.
	The '''RS-88''' is a liquid-fueled ] burning ] as fuel, and using ] (LOX) as the oxidizer. It was designed and built by ], originally for the NASA Bantam System Technology program (1997).

			== Origins and Testing ==
⚫	~~In 2003, it was designated by ] 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~~. The RS-88 engine proved to be capable of {{convert\|50000\|lbf\|kN\|abbr=on}} of thrust at sea level~~.
			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.
	A ] derivative of the RS-88 has been selected for the ] launch escape system.<ref>{{cite web\|title=Test of Rocketdyne abort motor for Boeing crew capsule\|url=https://www.youtube.com/watch?v=mOv1ew1GPKc\|work=youtube.com\|accessdate=24 November 2011}}</ref> This version is capable of 39,700lbf (176.6kN) of thrust and four are used in ]'s abort system.<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 – Spaceflight Now\|last=Clark\|first=Stephen\|language=en-US\|access-date=2019-12-19}}</ref>

			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.
⚫	== ~~Bantam~~ Launch System ==
	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>

		⚫	== Starliner Launch Escape System ==
	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 \|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> which was the propulsion element of the low-cost technologies of the larger ].
		⚫	]]]

			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>
	== Boeing CST-100 ==
⚫	]]]
	The ] for Boeing's ] spacecraft uses a lightweight, hypergolic derivative of the RS-88 called the Launch Abort Engine (LAE).<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 = http://www.beyondearth.com\|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 ==
	* ]		* ]
	* ]
	* ]
	* ]		* ]

Line 56:		Line 58:
	]		]
	]		]
			]

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