An Experimental and Analytical Investigation of Pulsed-jet Ejector Performance PDF Download
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Author: Frederic Neal Steigman
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
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Book Description
Author: Frederic Neal Steigman
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
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Book Description
Author: Willard A. Wright
Publisher:
ISBN:
Category : Ejector pumps
Languages : en
Pages : 11
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Barton Scott Wade
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Book Description
This investigation analyzes the operating characteristics of an ejector having a heated primary jet and a constant area mixing section. The effects of several key parameters are determined on the basis of idealized theory. Performance characteristics are described in terms of certain non-dimensional coefficients obtained by a systematic dimensional analysis. In addition, experimental results obtained from a model ejector are presented. These results are in reasonable agreement with the theoretical analysis. Suggestions are made for further improvements both in the theory and in the experimental facility. (Author).
Author: Daniel E. Paxson
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Charles Alexander Lindley
Publisher:
ISBN:
Category : Jet propulsion
Languages : en
Pages : 68
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 172
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Book Description
Author: Khare, Jitendra Mai
Publisher: 1973.
ISBN:
Category : Jets
Languages : en
Pages : 202
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 69
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Book Description
Results of an experimental investigation concerning the design and testing of air-to-air thrust augmenting ejectors utilizing short curved-wall diffusers are presented. These ejectors were designed primarily according to the procedure established in an analytical research effort sponsored by DTNSRDC from 1980-1981. Two of the three ejectors tested have identical mixing chambers. The mixing chamber inlet area to the primary nozzle area ratio lambda was 40. The overall ejector length-to-mixing chamber diameter ratios L/D(overall) were 6.09 and 6.16; diffuser area ratios AR(diff) were 1.33 and 1.46, respectively. The third ejector had an L/D(overall) of 6.02, a lambda of 20 and an AR(diff) of 1. 26. The best observed thrust augmentation ratio phi and the modified thrust augmentation ratio phi sub 2 were 2.11 and 1.91 respectively for a sonic primary jet. The modified thrust augmentation ratio phi sub 2 accounts for the penalty of suction in preventing flow separation in the diffuser. These levels of thrust ratio were derived from velocity measurements at the ejector exit. Independent thrust measurements obtained with strain gages on the mixing chamber agree with the force calculated from the momentum data. The experimentally observed ejector performance data correlated well with the predicted values. (Author).
