SP-180 wankel hybrid

Wankel rotary engine

The SP-180 hybrid wankel is the flagship of the 3W-International 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 180cc 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 heli 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

Another feature of this integrated hybrid technology is to act as a form of redundancy, to allow for emergency decent in the event of a critical scenario.

The SP-180 wankel is at TRL9 with multiple engine systems flying in all environmental conditions globally. The SP-180 has a proven water-cooled housing and oil cooling of the rotor. Predictable maintenance minimizes the engine down time, meaning greater operational capacity.

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