1946-01-01

Factors Affecting the Design of JET TURBINES 460225

THE advent of the gas turbine has changed the character of the aircraft-engine designers' problems. The use of rotating machinery and continuous flow simplifies the mechanical design and the prediction of performance.
To illustrate this the author has analyzed the factors affecting the thrust output of a Whittle jet turbine. These show that the design is a compromise between aerodynamic and stress limitations. At the moment the metallurgist appears to have contributed more to the success of the gas turbine than the aerodynamicist, although present achievements have been made possible by the work of both. Future progress, the author feels, will depend on continuous research in both fields.
In making the conversion from the piston engine to the gas turbine, he concludes, the design office will have to furnish itself with some new equipment, the major item will be a fund of aerodynamic knowledge.

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