UAVOS has modified the UAV-85 and UAV-70 4-stroke gasoline engines based on the Fiala PROP. company motors. As a result of the modifications, the engines have greater reliability, efficiency and engine lifespan, UAVOS says.

The new series of UAS engines are equipped with state-of-the-art air cooling and a two-nozzle fuel injection technology. Additionally, a brushless generator-starter is installed on the engine.

According to UAVOS, the engines are 4-stroke engines with 2 valves per cylinder. For easy starting and smooth running in all the modes of engine speed, the power plants are equipped with a microprocessor ignition. Depending on the operating conditions, a lambda probe can precisely tune UAVOS’ injection system. All characteristics obtained are confirmed by diagrams.

Since the injection system's ceiling is on average 9800 feet above sea level and has a low fuel consumption, these power plants have “excellent suitability” for a given application, UAVOS says. UAVOS notes that UAS engines have been tested from sea level to 8200 feet altitude, and at temperatures ranging from negative 31 degrees Fahrenheit to 122 degrees Fahrenheit.

UAVOS’ unmanned helicopters have already been equipped with the modified engines.

“UAVOS is excited to work with Czech Fiala PROP. company to promote its technologies,” says Aliaksei Stratsilatau, CEO and lead developer of UAVOS.

“The cooperation with the Company is a real opportunity to develop new capabilities and to pursue new business opportunities. This collaboration will be beneficial both to UAVOS and Fiala PROP. company.”