Search Results

The procedure followed in the design of a turbo propeller for a given type of installation is outlined. Aerodynamic, physical and control aspects are covered. The resulting design is discussed, and its physical and operational characteristics are briefly described. Test experience is reviewed to indicate how the theoretical design was substantiated.

An investigation of spark-ignition reciprocating engines indicates that considerable improvement in engine power and fuel consumption and in airplane range and payload can be achieved by compounding them with exhaust-gas turbines. The improvement in performance increases with the degree of compounding and the attendant increase in complexity of the system. The compression-ignition compound engines also appear to offer a possibility of appreciable gains over the spark-ignition systems; however, it is anticipated that a greater amount of development time will be required for the practical realization of the predicted performance of the compression-ignition system than of the spark-ignition engine.