The TDI Family of Engines

Diameter: 4.5 inches
Thrust: 30-lbf
Diameter: 5.0 inches
Thrust: 55-lbf


Diameter: 7.0 inches
Thrust: 100-lbf
Diameter: 8.5 inches
Thrust: 200-lbf


A series of engine accessories are also available from TDI resulting in a complete propulsion system package:

  • Fuel metering pump
  • Engine mounting brackets
  • Compressor Discharge Pressure (CDP) for pressurizing fuel tanks
  • Engine control logic
  • Standalone digital Engine Control Unit (ECU)
  • Pyroflare igniter interface
  • Gas generator interface (for rapid starts)
  • Integrated Permanent Magnet Generator (PMG)
  • PMG based speed sensor
  • Exhaust nozzles (customized geometries)

Engineering Support

Test Support

  • On-site customer support (engine/vehicle integration)
  • Windtunnel (Texas A&M, Washington State University, etc.)
  • Simulated flight (NASA Glenn, AEDC, ATK GASL)
  • Captive-carry
  • Flight testing


  • Engine cycle deck
  • Off-design performance
  • Engine optimization (matching for specified flight conditions)
  • Vehicle / engine integration
  • Manufacturing optimization


  • Facility fabrication (portable test cell)
  • Inlet distortion testing
  • Shock and vibration

TDI-J45 in action