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Recent Developments of the Mechanism of the Hydraulic VariablePitch Aircraft Propeller

Recent Developments of the Mechanism of the Hydraulic VariablePitch Aircraft Propeller After briefly outlining the main features of the variablepitch propeller, this paper proceeds to describe the development of the pistonengined hydraulically operated propeller as a brake, both in the air and on the ground. Examples are given of the magnitude of the braking effort of a propeller when windmilling under controlled conditions and when in reverse pitch under power. The advent of the gas turbine, originally intended as a means of jet propulsion, opened up a new field of application for the variablepitch propeller and this application with its attendant problems and their solution is discussed. Three types of gasturbine power plant, together with the appropriate propeller arrangements are reviewed. These arc I the directconnected turbine 2 the compoundcompressor turbine and 3 the freepropeller turbine. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Recent Developments of the Mechanism of the Hydraulic VariablePitch Aircraft Propeller

Aircraft Engineering and Aerospace Technology , Volume 22 (9): 9 – Sep 1, 1950

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb031943
Publisher site
See Article on Publisher Site

Abstract

After briefly outlining the main features of the variablepitch propeller, this paper proceeds to describe the development of the pistonengined hydraulically operated propeller as a brake, both in the air and on the ground. Examples are given of the magnitude of the braking effort of a propeller when windmilling under controlled conditions and when in reverse pitch under power. The advent of the gas turbine, originally intended as a means of jet propulsion, opened up a new field of application for the variablepitch propeller and this application with its attendant problems and their solution is discussed. Three types of gasturbine power plant, together with the appropriate propeller arrangements are reviewed. These arc I the directconnected turbine 2 the compoundcompressor turbine and 3 the freepropeller turbine.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Sep 1, 1950

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