AVIATION ENGINES
COMPACT
POWERFUL
FUEL EFFICIENT
SWISS MADE
Our engines are compact, fuel-efficient, and endurance proven. They are engineered for mission-critical platforms that demand reliability in the air, whether in civil surveys, industrial applications, or defence operations. From lightweight single-piston units to strong multi-cylinder powerplants, the Suter portfolio covers the full range of UAV propulsion.
Each system is developed and manufactured in Switzerland, tested in dedicated high-tech test cells, and validated for Multi Fuel options (all kerosine based fuels like Jet-A1, JP-5 and JP-8). Compliance with Swiss/EU dual-use export regulations and ISO 9001 QA standards ensures trust and transparency for every customer.
OUR ENGINES
| Type | Displacement | Power | Weight | Image |
|---|---|---|---|---|
| SPA 144 / SPA 144 SDI | 144 cc Single piston *under development june 2026 |
8-12 HP | 4 – 4,2 kg |  |
| TOA 288 / TOA 288 SDI | 288 cc Twin opposed piston | 16-26 HP | 7,4 – 7,9 kg |  |
| TOW 288 | 288 cc Twin opposed piston | 18-26 HP | 7,6 kg |  |
| TOA 330 / TOA 330 SDI | 330 cc Twin opposed piston | 20-30 HP | 8,2 – 8,7 kg | |
| TOA 330-APU | 330 cc Twin opposed piston | 17 kW | 17,7 – 18,2 kg |  |
| FOA 660-SDI | 660 cc Four opposed piston *under development juli 2026 |
45-60 HP | 18 kg |  |
UAV PROPULSION
ENGINEERING SOLUTIONS
Every engine has different integration needs to suit your aircraft. We offer integration engineering support for our engine packages. In addition to standard solutions we offer support to complete your firewall forward installation.
From servo controlled airducts, to keep engine temperature in the preferred range, or tailor-made engine mounts and optimized reduction drives, our engineers will support your demands. The package will be topped with our titanium exhaust systems, where engineering meets art.
Different aircraft and mission profiles and their specific mission profile eventually need an optimization of the engine fuel and ignition map, especially when the fuel varies from international standard specifications.
SUTER UAV
IN ACTION
Suter UAV engines in operational use, integrated into advanced unmanned platforms.
This video shows a customer application by Dufour Areospace, hoghlighting reliable performance, thermal stability and mission specific engine calibration in real fligth conditions.
Designed for endurance. Proven in the field.
PROOF OF EXPERTISE
