A Study of Ejector Performance and Design, with Special Reference to Jet Thrust Augmentation for Possible Applications to V/STOL Aircraft PDF Download
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Author: T. K. Szlenkier
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: T. K. Szlenkier
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 524
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Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 500
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Author: K. S. Nagaraja
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Category :
Languages : en
Pages : 36
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Book Description
In the last two decades, Air Force has made significant contributions to the development of the ejector technology for thrust augmentation purposes. Initially, Aerospace Research Laboratories at WPAFB undertook a major task of demonstrating that compact, thrust augmenting ejectors could be designed. After ARL successfully demonstrated that by utilizing hypermixing nozzles, thrust augmentation ratio of the order of two could be achieved, Flight Dynamics Laboratory launched a program of conducting preliminary design of an ejector thrust augmented demonstrator aircraft. ARL's work laid the foundation for a systematic study of the ejector application for V/STOL aircraft.
Author: Richard B. Fancher
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 32
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Book Description
The thrust augmentation, lift augmentation and noise reduction characteristics of compact ejectors make them potentially attractive for propulsion lift systems; however in the past, poor thrust augmentation results have negated the other benefits. This report covers the general characteristics of ejectors pointing out what makes them attractive and why only certain types of ejectors are of interest. It reviews the key requirements for high performance thrust augmentation. It also presents a summary of the performance results achieved thus far and proposes some possible applications for various types of V/STOL aircraft. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Book Description
Author: R. P. Braden
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 1094
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 448
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Author:
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ISBN:
Category :
Languages : en
Pages : 42
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Author: Tsze C. Tai
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Category : Jet propulsion
Languages : en
Pages : 31
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Book Description
Recent advances in jet ejectors operating under static conditions have produced high thrust augmentation that is feasible for application to V/STOL flight. However, because of (a) loss in augmentation in duct flow, (b) ramjet effect, and (c) space limitations, high performance and compactness are required in the design of thrust-augmenting ejectors for V/STOL aircraft. An analytical inverse approach is presented in which the pressure distribution along the diffuser wall of an ejector is defined for a given entrance flow condition and the contour of the desired diffuser wall is determined by using a finite difference technique. The prescribed pressure distribution is first optimized by a modified Stratford criterion for incipient separation of turbulent boundary layers; this optimization makes it applicable to compressible two-dimensional and axisymmetric flows.
