Lowental Hybrid’s LH-04 is a fully parallel propulsion system built on the company’s proprietary Native Parallel Hybrid™ architecture. Designed for tactical UAVs and loitering munitions in the 80 to 120 kg MTOW range, it provides exceptional endurance and operational flexibility in a compact form. The system integrates an air-cooled, two-stroke internal combustion engine with a boxer cylinder configuration and a motor, starter, and generator package for seamless power transition between electric and combustion modes.
LH-04 features automatic start, electronic fuel injection, and uses premixed gasoline or heavy fuel with 4% two-stroke oil. The design delivers up to five times greater endurance than comparable fully electric systems while maintaining the ability to operate in low-acoustic, electric-only flight. Built-in redundancy, in-flight charging, and drop-in compatibility for both fixed wing and VTOL platforms make LH-04 a robust and mission-ready solution for demanding unmanned operations.
Specifications:
| Typical MTOW: | 80-120 kg 176-264 lb |
| Max Electric Output Power: | 9,135 W 12.25 HP |
| Nominal Electric Power Output (Avionics/Charging): | 700 W |
| Max Gasoline Output Power: | 5,960 W 8.00 HP |
| Average Nominal Specific Fuel Consumption Rate: | Gasoline - 0.58 - 0.61 kg/kW·h Heavy Fuel - 0.61 - 0.64 kg/kW·h |
| Full System Weight: | 6.1 kg 13.44 lb |
| Operating Temperature: | -20°C to +50°C -4°F to +122°F |
| Operating Altitude: | 0 - 5,480 m 0 - 18,000 ft |
| MTBO: | 250 hours |
| Recommended Propeller: | 28" - 34" |
