Standard
External fuel pump
A configuration with an external brushless fuel pump. The separate component allows its position to be adapted to the platform.
Turbojet engine · PA-KO product
KJ-400
Polish technology.
Compact propulsion.
A compact 400 N turbojet engine for unmanned aerial vehicles. A finished PA-KO propulsion solution with digital engine management and two fuel-system configurations.
- Maximum static thrust at STP
- 400 N
- Dry mass
- 3.7 kg
- Fuel-system configurations
- 2
KJ-400 · PA-KO technology
Polish technology
Compact engine.
Complete solution.
KJ-400 is a Polish turbojet engine for unmanned aerial vehicles. It combines 400 N of thrust with a compact design and digital ECU control.
Standard and Integrated Pump configurations allow the fuel system to suit the installation. The variants differ in pump location: external to the engine or mounted directly on its casing.
Two configurations
One engine.
Two fuel-system options.
KJ-400 is available in two fuel-system configurations to suit different installation requirements.
Integrated Pump
Engine-mounted fuel pump
A configuration with a brushless pump mounted directly on the engine casing. The integrated layout simplifies installation and reduces external components.
Digital engine management
The ECU provides automatic start, shutdown and in-flight restart. It supports barometric compensation and PWM / RS232 control and telemetry.
Technical data
KJ-400 in numbers.
Technical specifications of the KJ-400 engine. Two fuel-system configurations: Standard and Integrated Pump.
Download product brochures
| Parameter | Value |
|---|---|
| Maximum static thrust | 400 N at STP |
| Pressure ratio | 3.8:1 |
| Air mass flow | 0.65–0.70 kg/s |
| Idle / maximum speed | 30,000 / 96,000 rpm |
| Maximum fuel use | 1,100 g/min |
| Fuel | Jet A-1 / kerosene |
| Maximum exhaust gas temperature (EGT) | 750°C |
| Core engine envelope | 350–390 × 148–150 mm |
| Dry mass | 3.7 kg |
| Fuel pump | External or casing-mounted brushless pump |
| Start system | Automatic kerosene start |
| ECU functions | Auto start / stop / restart |
| Control / telemetry | PWM / RS232 |
| Power supply | 3S LiPo / XT60 |
| Altitude compensation | Barometric sensor |
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A closer look at KJ-400.
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Let’s talk about
KJ-400 propulsion.
Looking to select an engine configuration or discuss delivery terms? Contact the PA-KO team.