Requirement from maximum rate of climbing of aircraft service ceiling to turbocharged reciprocating engine

A wide operating range of engine is of vital to the safety operation of aircraft, especially at service ceiling. Through the dynamic analysis of the matching process between the aircraft and power plant which is composed of the turbocharged reciprocating engine and propeller, quantitative performance requirement for engine from the service ceiling was proposed, which proved to associate with the operating range and surplus power of engine. The operating range can also be used to evaluate the matching result besides the design point performance. This means that the conditions of cruising should guarantee the engine power recovery to sea level. A calibrated simulation model was created by GT-power. Its operating range was obtained by simulation and the factors influencing operating range were analyzed in theory. The advice of matching turbochargers based on the wide operating range was given considering the safety. This process can also be used to verify the margin of adjustment at service ceiling to ensure the safety.