75cc Heavy Fuel Engine
The Orbital 75cc Heavy Fuel Engine utilizes an air-cooled two-stroke single-cylinder design with a low vibration signature, and features Orbital UAV's unique proprietary FlexDI technology that utilizes a spray-guided direct fuel injection system, atomizing the fuel with injected air. Weighing just 4.4 kg, the innovative propulsion system runs on a range of heavy fuels (JP-5, JP-8, Jet-A and Jet-A1) as well as gasoline, and provides both inflight and post-flight diagnostics.
The 75cc Heavy Fuel Engine is battlefield-proven, with over 650,000 service hours in the field with Textron. This engine is the propulsion system of choice for the Aerosonde MK4.7, a tactical hybrid VTOL sUAS designed for land-based and maritime ISR.
Specifications:
| Power | 5.2 hp (3.9 kW) at 6500 RPM |
| Electrical Power | 300-500W customizable |
| Weight | 4.4kg (dry) |
| Fuel Consumption | <330 g/kWh typical |
| Max Operating Altitude | 20,000 ft |
| Operating Temperature | -30 to 55oC |
| Launch Acceleration | ~20g for 30 ms |
| Current TBO | 300-500 hrs |
