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XRS-2200

Historical Boeing Rocketdyne XRS-2200 linear-aerospike liquid rocket engine demonstrator developed for NASA's X-33 advanced technology vehicle. NASA documents a pump-fed LOX/LH2 gas-generator cycle, more than 200,000 lbf (about 890 kN) sea-level thrust per engine, and a two-engine side-by-side X-33 installation concept; no flight installation is asserted here.

XRS-2200
NASA Marshall Space Flight Center (NASA-MSFC), Photo ID MSFC-0103149, twin XRS-2200 linear aerospike engine hot-fire test; source mirror via Wikimedia Commons (File:Twin Linear Aerospike XRS-2200 Engine.jpg). · The original image is identified as solely created by NASA and public domain in the United States under PD-USGov-NASA. Retain NASA/MSFC credit and provenance; do not imply NASA or Boeing endorsement, and preserve separate restrictions on NASA logos, insignia, emblems, or any non-NASA material. The retouched Commons derivatives have separate licensing; this packet uses the original public-domain file. · Source

Identity

Aliases
XRS-2200RS-2200X-33 linear aerospike engine
Domains
spaceflight
Identity Level
model
Kind
liquid-rocket-engine
Name
XRS-2200
Status
historical

Details

Description
Historical Boeing Rocketdyne XRS-2200 linear-aerospike liquid rocket engine demonstrator developed for NASA's X-33 advanced technology vehicle. NASA documents a pump-fed LOX/LH2 gas-generator cycle, more than 200,000 lbf (about 890 kN) sea-level thrust per engine, and a two-engine side-by-side X-33 installation concept; no flight installation is asserted here.
Developers
Lineage
Manufacturers
Propellants
liquid oxygenliquid hydrogen
Rocket Specs
Cycle
gas generator
Sea Level Thrust
…

Links

Official Url
https://ntrs.nasa.gov/citations/19990004339

Assets & Meta

Creation Time
August 14, 2026 at 23:46:35 UTC
Updated Time
August 22, 2026 at 04:34:01 UTC
Image
Download

Other

Sources
  • Accessed Date
    2026-08-14
    Note
    NASA documents the XRS-2200 linear-aerospike engine as a pump-fed LOX/LH2 gas-generator engine delivering more than 200,000 pounds of sea-level thrust per engine and arranged as two engines on X-33.
    Publisher
    NASA Technical Reports Server
    Title
    X-33 Linear Aerospike Engine
    Url
    https://ntrs.nasa.gov/citations/19990004339
  • Accessed Date
    2026-08-14
    Note
    NASA describes the XRS-2200's linear aerospike nozzle, LOX/LH2 gas-generator cycle, J-2/J-2S-derived components, and X-33 test architecture.
    Publisher
    NASA Technical Reports Server
    Title
    X-33 Linear Aerospike Engine and Vehicle Control
    Url
    https://ntrs.nasa.gov/api/citations/19980174934/downloads/19980174934.pdf
  • Accessed Date
    2026-08-14
    Note
    NASA records single- and dual-engine XRS-2200 development testing between 1999 and 2001 for the X-33 technology demonstrator.
    Publisher
    NASA Technical Reports Server
    Title
    RS-68 Engine Testing and Delta IV CBC Stage Tests
    Url
    https://ntrs.nasa.gov/api/citations/20050203858/downloads/20050203858.pdf