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研究了单级涡轮增压活塞螺旋桨推进系统(STS)的部件法数学模型,给出了STS的联合工作方程组,给出了STS的调节方式,计算了STS的高度-速度特性.从总体及各部件的高度-速度特性方面比较了STS和双级涡轮增压活塞螺旋桨推进系统(DTS).研究表明:选择的STS调节方式可满足其设计目标,相比于DTS实际功率保持高度为12.5km,STS的实际功率保持高度可达到5.5km;在选用相同的螺旋桨和发动机的前提下,STS和DTS中各部件特性的变化规律基本一致,但STS的推进效率、单位推力耗油率、推进系统总效率在高度-速度特性图中的变化范围大大窄于DTS的.
The mathematical model of the component method of the single stage turbocharged piston propeller propulsion system (STS) was studied. The joint working equations of the STS were given, the adjustment method of the STS was given and the height-velocity characteristics of the STS were calculated. The STS and two-stage turbocharged piston propeller propulsion system (DTS) are compared in terms of the height-speed characteristics of each component.Researches show that the selected STS adjustment method meets its design goal and maintains a maximum height of 12.5 km compared to the actual power of the DTS , The actual power of STS can be kept at a height of 5.5km. The characteristics of STS and DTS in the selection of the same propeller and engine are basically the same, but the STS propulsion efficiency, unit thrust fuel consumption, propulsion system The overall efficiency in the height-speed map changes significantly narrower than the DTS.