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A Theory for the Side Force produced in Two-Dimensional Nozzles by Secondary Gas Injection

Published online by Cambridge University Press:  04 July 2016

John H. Neilson ,
Alastair Gilchrist  and
Chee K. Lee
John H. Neilson
Affiliation:
University of Strathclyde, Glasgow, Scotland
Alastair Gilchrist
Affiliation:
University of Strathclyde, Glasgow, Scotland
Chee K. Lee
Affiliation:
University of Strathclyde, Glasgow, Scotland
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Summary:

This work is concerned with the side force produced in rocket nozzles by secondary gas injection. A new theory for determining the side force is presented for two-dimensional flow and this is considered to be an important step towards a theory applicable to three-dimensional flow. The proposed theory is based on a double wedge model for the separated region upstream of the secondary port. The principal feature of the model is that it accounts tor the fact that the angle of the shock wave, originating from the separated region, is observed to increase with increase in secondary mass flow rate. Theoretical side force results are shown to compare favourably with experimental results obtained using two-dimensional nozzles and a comparison is made between the proposed theory and the theories of other workers.

Type
Supplementary Papers
Information
The Aeronautical Journal , Volume 72 , Issue 687 , March 1968 , pp. 267 - 274
Copyright
Copyright © Royal Aeronautical Society 1968 

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References

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