Reaction Motors XLR99
The throttleable liquid rocket engine developed for the North American X-15.
Identity
- Aliases
- XLR99
- Domains
- aviation
- Identity Level
- model
- Kind
- liquid-rocket-engine
- Name
- Reaction Motors XLR99
- Status
- historical
Details
- Description
- The throttleable liquid rocket engine developed for the North American X-15.
- First Flight Date
- 1960-11-15
- Propellants
- anhydrous ammonialiquid oxygen
- Rocket Specs
- Chamber Count
- 1
- Sea Level Thrust Kn
- 253.5
Links
- Official Url
- https://www.nasa.gov/history/x15/chrono.html
Assets & Meta
- Creation Time
- July 29, 2026 at 09:31:25 UTC
- Updated Time
- July 29, 2026 at 09:31:25 UTC
Other
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Smithsonian National Air and Space Museum
- Title
- Reaction Motors: 75th Anniversary
- Accessed Date
- 2026-07-29
- Publisher
- NASA
- Title
- X-15 chronology
- Accessed Date
- 2026-07-29
- Note
- Supports the legacy vehicle installation and the narrow canonical identity used for migration.
- Publisher
- Official vehicle or program source
- Title
- North American X-15 official vehicle reference