The GAS418A from Flygas is a 135 horsepower UAV engine developed for long-range unmanned aircraft operating at medium to high altitudes. Delivering a maximum output of 100 kW (135 HP) at 5,800 RPM and a power-to-weight ratio of 1.8 hp/kg, the engine provides strong performance while maintaining a dry weight of 75 kg in the horizontal configuration.
Two versions are available to support both horizontal and vertical axis installation, allowing integration across a wide range of UAV airframe configurations. Its compact four-cylinder boxer layout, combined with fully electronic fuel injection and ECU-controlled ignition, enables optimized operation under a wide range of ambient conditions.
The GAS418A operates on standard 98 octane automotive gasoline and is equipped with a mechanical reduction gearbox featuring integrated shock absorption, with multiple ratio options available to match propeller requirements. The engine incorporates a dry sump lubrication system and water-cooled, closed-circuit thermal management architecture to support consistent operation.
An optional configuration combining electronic fuel injection with carburetors is available to reduce the risk of electromagnetic interference affecting EFI systems. Designed and assembled entirely in-house at Flygas in Emilia Romagna, Italy, the engine is built using components manufactured within Italy and the European Union and is supplied with a 14 V, 32 A alternator, with additional alternator capability available if required.
| Displacement: | 1.8 liters |
| Configuration: | 4-cylinder boxer, 4-stroke Otto cycle |
| Bore x Stroke: | 92 mm x 68 mm |
| Maximum Power: | 100 kW (135 HP) @ 5,800 RPM (sea level) |
| Maximum Continuous Power: | 84 kW (115 HP) @ 5,200 RPM |
| Dry Weight: | 75 kg (horizontal) / 80 kg (vertical) |
| Alternator: | 14 V DC, 32 A (secondary alternator optional) |
| Installation Options: | Horizontal or vertical axis |
