Single-spool turbojet propulsion · San Francisco, CA
400 newtons.
Built here.
The USMT-400 is a 400N class single-spool turbojet for expendable and attritable unmanned aircraft — designed, manufactured and assembled in the United States.
Centrifugal / axial
Bench validated
FIG. 2USMT-400 — Assembly sequence
| Performance | |
|---|---|
| Max thrust, sea level static | 400 N · 90 lbf |
| Idle thrust | 20 N · 4.5 lbf |
| Max shaft speed | 95,000 rpm |
| Pressure ratio | 4.0 |
| Mass flow | 0.74 kg/s |
| Exhaust gas temperature | 520–775 °C |
| Installation | |
|---|---|
| Dry mass | 3,600 g · 7.9 lb |
| Installed mass | 3,750 g · 8.3 lb |
| Diameter | 149 mm · 5.9 in |
| Overall length | 358 mm · 14.1 in |
| Fuel | Jet A · JP-8 · kerosene · diesel |
| Lubrication | Fuel-oil premix |
| Supply voltage | 24 V (6S LiPo) |
| Control & telemetry | CAN · I²C · UART · PWM |
Built for modern unmanned missions.
Aerial targets
Subscale and full-scale target drones needing repeatable thrust at a unit cost that survives an expended-asset budget line.
Loitering munitions
Extended-range one-way effectors where turbojet cruise speed and altitude open engagement geometries a piston or electric propulsor cannot.
Decoys
Air-launched and ground-launched decoys requiring a credible thrust and thermal signature from a compact, low-cost powerplant.
Attritable UAS
Collaborative and expendable platforms where propulsion has to be produced at rate, not hand-built in ones and twos.
Ready to be put on contract.
Tell us what you need to fly.
If you have a platform looking for propulsion in the 400N class, send the airframe mass, mission profile, and installation envelope.
Detailed performance data, interface control documentation, and engine models are available under executed NDA. Export-controlled technical data is released only to eligible recipients.
Request engine data