The result shows that the traditional estimation methods about powerplant performance are adapted for propeller aircraft even if with small sized piston engine and propeller.
研究结果表明，传统的估算方法对于装小型活塞式发动机的螺旋桨飞机也是适用的。
2
The powerplant of propeller aircraft is composed of two main parts, piston engine and propeller.