Study on Flight Performance of Propeller-Driven UAV

Table 1

Technical parameters of the Rotax gasoline engine.

Name	UL/F aeroengine
Type	Four-cylinder, four-stroke, and horizontally opposed engine
Displacement	12 L
	79.5 mm61.0 mm
Compression ratio	9 : 1
Rated power	73.5 kW/5500 rpm
Maximum torque	144 N·m/4900 rpm
Cooling mode	Mixed cooling