Lowental Hybrid’s LH-03 is a fully parallel propulsion unit built on the company’s Native Parallel Hybrid™ architecture. Designed for fixed wing and VTOL UAVs and loitering munitions in the 50 to 80 kg MTOW range, it delivers high endurance and flexible power delivery in a compact format. The system combines an air-cooled, single-cylinder two-stroke internal combustion engine with a motor, starter, and generator for seamless transition between electric and combustion power.
The LH-03 starts automatically and uses electronically fuel-injected premixed gasoline or heavy fuel with 4% two-stroke oil. It enables up to five times longer endurance than comparable fully electric UAVs while allowing silent battery-only operation when needed. With in-flight charging, integrated redundancy, and drop-in compatibility for both fixed wing and VTOL platforms, LH-03 provides dependable, mission-ready propulsion for tactical and endurance-focused operations.
Specifications:
| Typical MTOW: | 50-80 kg 110-176 lb |
| Max Electric Output Power: | 7,355 W 9.86 HP |
| Nominal Electric Power Output (Avionics/Charging): | 400 W |
| Max Gasoline Output Power: | 3,400 W 4.55 HP |
| Average Nominal Specific Fuel Consumption Rate: | Gasoline - 0.56 - 0.6 kg/kW·h Heavy Fuel - 0.59 - 0.63 kg/kW·h |
| Full System Weight: | 4.65 kg 10.25 lb |
| Operating Temperature: | -20°C to +50°C -4°F to +122°F |
| Operating Altitude: | 0 - 4,870 m 0 - 16,000 ft |
| MTBO: | 250 hours |
| Recommended Propeller: | 24" - 28" |
