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http://dx.doi.org/10.6108/KSPE.2022.26.5.011

Performance Analysis of an Expansion Deflection Nozzle by Nozzle Length Reduction Method  

Joomi Lee (Department of Aerospace Engineering, Graduate School of Chungnam National University)
Junsub Choi (Department of Aerospace Engineering, Graduate School of Chungnam National University)
Hwanil Huh (Department of Aerospace Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.5, 2022 , pp. 11-23 More about this Journal
Abstract
For the design of the shortened ED(Expansion Deflection) nozzle, a numerical study of ED nozzle was performed according to the length reduction methods. The first method is to reduce the extension length of the ED nozzle with 80% bell nozzle length by 10%, 20% and 30%. The second method is to shorten the extension length by increasing the nozzle throat angle. Due to the increase in the curvature of the contour as the length shortened, the decrease in the nozzle exit velocity between the ED nozzle with 80% bell nozzle length and the ED nozzle in the first method was reduced, and the thrust become similar. The ED nozzle of the second method increased the thrust by increasing the nozzle exit velocity compared to the ED nozzle with 80% bell nozzle length.
Keywords
Altitude Compensation Nozzle; Expansion Deflection Nozzle; Nozzle Length; Nozzle Throat Angle;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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