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X-31 Enhanced Fighter Maneuverability Demonstrator Research Aircraft Family

The X-31 Enhanced Fighter Maneuverability demonstrators were two U.S.–German research aircraft that combined thrust-vectoring paddles with digital flight controls to investigate controlled post-stall maneuvering. The first X-31 flew in 1990. The initial research and demonstration effort ran through 1995; aircraft 164584 was lost after icing in its nose probe corrupted flight-control data on January 19, 1995. The surviving aircraft later supported VECTOR research into advanced control and short landings at Patuxent River. Its final flight was on April 29, 2003, and it is preserved at the Deutsches Museum Flugwerft Schleißheim. NASA’s X-31 history covers the thrust-vectoring research; the Deutsches Museum aircraft history documents the later test phase and final flight.

X-31 Enhanced Fighter Maneuverability Demonstrator Research Aircraft Family
NASA/Jim Ross · NASA content generally is not subject to copyright in the United States and may be used for educational or informational Internet pages under NASA Media Usage Guidelines; use factually without implying endorsement, acknowledge NASA, observe NASA insignia/logotype restrictions, and exclude third-party copyrighted material. · Source
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Identity

Aliases
X-31Enhanced Fighter Maneuverability (EFM) DemonstratorX-31 Enhanced Fighter Maneuverability
Family Name
X-31 Enhanced Fighter Maneuverability Demonstrator
Full Name
X-31 Enhanced Fighter Maneuverability Demonstrator Research Aircraft Family
Roles
militaryresearchexperimentaltechnology_demonstrator
Status
retired
Type
aircraft

Details

Aircraft Specs
Configuration
fixed_wing
Crew Capacity
1
Operating Modes
land
Takeoff Landing Capabilities
conventional
Description
The X-31 Enhanced Fighter Maneuverability demonstrators were two U.S.–German research aircraft that combined thrust-vectoring paddles with digital flight controls to investigate controlled post-stall maneuvering. The first X-31 flew in 1990. The initial research and demonstration effort ran through 1995; aircraft 164584 was lost after icing in its nose probe corrupted flight-control data on January 19, 1995. The surviving aircraft later supported VECTOR research into advanced control and short landings at Patuxent River. Its final flight was on April 29, 2003, and it is preserved at the Deutsches Museum Flugwerft Schleißheim. NASA’s X-31 history covers the thrust-vectoring research; the Deutsches Museum aircraft history documents the later test phase and final flight.
Dimensions
Wingspan
…
First Flight Year
1,990
Last Flight Year
2,003
Propulsion Configurations
  • Entries
    • Count
      1
      Placement
      fuselage
      Propulsion System
      Role
      main
      Stage
      airframe
      Variant Notes
      Single F404-GE-400 installation; NASA reports 16,000 lbf / approximately 71.17 kN afterburning thrust. Exact thrust-vectoring paddles are installation hardware, not separate propulsion identities.
    Name
    X-31 single-engine F404-GE-400 thrust-vectoring installation
    Notes
    The X-31 demonstrators used one General Electric F404-GE-400 turbofan. Three carbon-carbon thrust-vectoring paddles adjacent to the engine nozzle redirected exhaust in pitch and yaw, coupled with digital flight controls for high-angle-of-attack and post-stall maneuvering.

Links

Official Url
https://www.deutsches-museum.de/en/flugwerft-schleissheim/exhibition/military-aviation/x-31

Assets & Meta

Creation Time
August 13, 2026 at 21:22:38 UTC
Updated Time
October 29, 2026 at 15:13:57 UTC
Image
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