The Variable Area Turbine for Future Turboshaft Engines

Authors: Pedersen, G. H.; Bernstein, H.

Source: Journal of the American Helicopter Society, Volume 10, Number 4, 1 October 1965 , pp. 1-4(4)

Publisher: AHS International

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Abstract:

Future helicopter requirements clearly dictate the need for improved propulsion systems. The military services continue to extend the fields of helicopter utility and it is reasonable to anticipate that this extension of utilization will continue. Increases in aircraft speed, range and payload capabilities are of paramount importance. Therefore, there will be continual pressure for improvement of propulsion systems in terms of lower specific fuel consumption and “mission effective” decreases in propulsion system weight. Addressing to the turboshaft engine, the attainment of higher performance necessitates the incorporation of several key advanced technologies. Of prime importance is the incorporation and further development of high temperature turbine component technology for both regenerated and non‐regenerated turbine type turboshaft engines. Also, the development of variable area turbines can provide significant improvements in engine performance and cost effectiveness. It is the purpose of this paper to show the magnitude of the engine improvements which can result from the incorporation of advanced technology with particular emphasis on the variable turbine applied to a regenerated free turbine engine.

Document Type: Research Article

DOI: http://dx.doi.org/10.4050/JAHS.10.1

Affiliations: Curtiss-Wright Corporation, Wright Aeronautical Division, Wood-Ridge, N. J. 07075

Publication date: October 1, 1965

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