Wankel Rotary UAS Engine 3W-180 SRE Hybrid


The new Wankel Rotary UAS Engine of 3W-International is a Wankel hybrid cycle engine with a compact design. The 4-stroke rotary engine is very light and offers an outstanding power-to-weight ratio.

Therefore the engine allows a higher payload in field operations. With the hybrid-boost power, additional 15KW depend on store capacity. This additional power volume is simplifying lift off or acceleration. The 3W-180 SRE can run with gas or Heavy Fuel (HF). Thus, 3W-International offers a standard manifold or a high pressure injection (HPI).

The cooling of the engine is guaranteed by water cooling of the housing and oil cooling of the rotor (active cooling).


Engine3W-180 SRE Hybrid
Typewankel rotary UAS engine
Weight6.80 kg/14.99 lbs
Weight with Generator9.50 kg/20.94 lbs
Power20KW/27.5HP @ 6000rpm
High Power Version28KW/38.5HP @7500rpm
Hybrid-Boostpoweradd. 15KW
Max-Torque32Nm @ 6000rpm / 36Nm @ 7500rpm
Power-to-Weight-Ratio5.66HP/kg / 2.57HP/lbs
Fuel consumption340g/kW @ max. load
Kerosin (only with HPI injection)
Injectionstandard mainfold injection
HPI (high pressure) injection optional
CoolingWater cooled housing & Oil Rotor cooling
(activ cooling)

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