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| 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.
- "Test of Rocketdyne abort motor for Boeing crew capsule". youtube.com. Retrieved 24 November 2011.
- Clark, Stephen. "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". beyondearth.com. Archived from the original on 23 September 2015. Retrieved 5 September 2015.
External links
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