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ZofiTech ZT J40 compact turbojet engine product photo showing the front intake, nose cone, and compressor inlet on a dark background.
ZofiTech ZT J40 compact turbojet engine standing upright with wiring harness and connector visible, photographed on a dark studio background.
Side profile of the ZofiTech ZT J40 compact turbojet engine on a dark background, showing the exhaust cone, stainless housing, and nose cone intake.
Front intake view of the ZofiTech ZT J40 compact jet engine (turbojet) showing the radial compressor inlet and nose cone, designed for UAV and target drone propulsion.
Front view of the ZofiTech ZT J40 compact turbojet engine on a dark background, showing the cylindrical housing and exhaust cone for UAV propulsion.
Close-up of the ZofiTech ZT J40 compact turbojet engine exhaust nozzle with protective struts and electrical connector lead for UAV propulsion integration.
Macro detail of the ZofiTech ZT J40 compact jet engine (turbojet) showing the intake lip, support strut and fuel/air line fitting for UAV propulsion integration.
Three ZofiTech ZT J Series turbojet engines (ZT J40, ZT J80, ZT J160) lined up on a workshop bench, showing compact stainless housings for UAV propulsion.
ZofiTech

ZT J40

Thrust 392 N 88.2 Lbf
Engine diameter 147 mm 5.8 Inch
Engine length 385 mm 15.1 Inch
Engine weight 3645 g 8.0 Lbs
The ZT J40 is one of ZofiTech’s leading turbojet engines, combining high performance, reliability, and a lightweight design. Developed for UAVs, target drones, and experimental aerospace systems. It represents the most widely produced engine in ZofiTech’s portfolio. As ZofiTech’s most produced engine, its manufacturing process and performance have been brought to perfection. Thanks to scalable production and flexible configuration options, ZofiTech can adapt each unit to meet specific customer requirements. Thousands of ZT J40 units are already in operation worldwide — powering aerial targets and a variety of unmanned aircraft platforms.
  • Ideal for UAVs, target drones, and aerospace demonstrators
  • Excellent power-to-weight ratio
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Technical description

All data at STP ± 2%
Engine diameter 147 mm 5.8 Inch
Engine length 385 mm 15.1 Inch
Engine weight 3645 g 8.0 Lbs
System airborne weight * 5211 g 11.5 Lbs
Thrust at S.T.P. at max RPM 392 N 88.2 Lbf
Maximum RPM 96 000 96 000
Thrust at idle RPM 13 N 2.9 Lbf
Pressure ratio at max RPM 3.8:1 3.8:1
Mass flow 660 g/s 1.46 lb/s
Max continuous EGT 850 °C 1562 °F
Fuel consumption 1020 g/min 36 oz/min
Specific fuel consumption 43.3 g/(kN·s) 1.53 lb/(lbf·h)
Starting method: Direct kerosene starting gas turbine, on request propane start.
* Total weight of: Engine, ECU, pump, battery, thermosensor, valves, mounting straps.
Min operation temperature * -25 °C -13 °F
Maximum operating temperature +50 °C +122 °F
Maximum operating altitude 8000 m 26 250 ft
Maximum operating speed 1000 km/h 620 mph
* With the use of LiPo batteries the minimum operation temperature is limited to -10 °C.
1 × RS232 Throttle and switch settings including special functions *
2 × PWM between 1–2 milliseconds ** Throttle and switch settings (special functions * with push button)
2 × Analog inputs 0–5 V DC ** Throttle and switch settings (special functions * with push button)
* Activation of prime function, igniter function, starter function, speed cool.
** Specify ECU at ordering with PWM inputs or Analog inputs.
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