Heavy Fuel, Gasoline Engines & Wankel Rotary UAV Engines
SP-180 SRE Hybrid Demonstrator Engine for UAV Demonstrator Hybrid Wankel Rotary Engine for UAV
SP-180 SRE Hybrid Demonstrator Engine for UAV

Demonstrator Hybrid Wankel Rotary Engine for UAV

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SP-180 SRE Hybrid Demonstrator Engine for UAV

This demonstrator hybrid engine can show you all the functionalities in a certain power range (limited by demonstrator configuration).

The SP-180 SRE hybrid is a single rotary engine with 180 ccm combustion chamber and a directly attached starter generator.

The SP-180 hybrid wankel is the flagship of the Sky Power propulsion portfolio. This wankel propulsion system has class leading performance figures that are achieved through a complex patented internal clean sheet design, centered around the single cylinder 180ccm configuration. Due to the nature of wankel, this propulsion system is exceptionally light and has a much smaller space envelope than the comparative two stroke equivalent. Minimal radial or torsional vibrations make this engine specifically compatible with high powered optics or sensors.

The ability to mount this engine at 90 degrees (vertically) adds to the user flexibility – suited to helicopter applications. The engine has an integrated starter generator, which allows the wankel to have several different operating functions:

  • Mechanical only: up to 22kW mechanical shaft power as primary form of propulsion
  • Mechanical and electrical (hybrid): combination of both electrical and mechanical propulsion.
  • Power generation (onboard battery pack required): The wankel is providing power to the generator system and it is the electrical output that is used as the primary form of propulsion.
  • Hybrid boost mode: Combination of both mechanical and electrical simultaneously for maximum performance
Type Rotary engine
Capacity 180 ccm / 10.98 cu in
Power 29.9 HP / 22 KW @ 6000 RPM Combustion power up to 20.1 HP / 15 KW Electrical power *power is depending on cooling concept
Speed Range 2000 – 7000 RPM
Weight 9.58 kg
Oil/Gasoline ratio 1:50 / 2% mix
Bore diameter 2.01 inch (51.00 mm)
Torque 36 Nm @ 6000 RPM