Flight characteristic comparison of single- and dual-stage turbocharging reciprocating gasoline engine propeller propulsion system based on mathematical model

A component-level characteristic simulation method for single-stage turbocharging reciprocating engine propeller propulsion system (STS) was studied. A regulating method of STS was stated, the joint-working equations of STS were placed, and the altitude-velocity characteristics of STS were simulated. The flying characteristics of each component and the overall performance were compared between a STS and a dual-stage turbocharging reciprocating engine propeller propulsion system (DTS). The research revealed that the regulating method of STS can meet the design objectives, the full power holding altitude of STS can achieve 5.5 km, while that of the DTS is 12.5 km. When selecting the same propeller and engine, the characteristics of each component between STS and DTS are similar, and the variation ranges with the altitude and velocity of the propulsion efficiency, specific fuel consumption, and total efficiency of STS are narrower than that of DTS.