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http://dx.doi.org/10.6108/KSPE.2019.23.3.028

Analysis of the Flow Characteristics of Plug Nozzle for Cold Air Test with Pintle Shape and Operating Pressure  

Kim, Jeongjin (The 4th R&D Institute - 1st Directorate, Agency for Defense Development)
Oh, Seokjin (The 4th R&D Institute - 1st Directorate, Agency for Defense Development)
Heo, Junyoung (The 4th R&D Institute - 1st Directorate, Agency for Defense Development)
Lee, Dohyung (The 4th R&D Institute - 1st Directorate, Agency for Defense Development)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.23, no.3, 2019 , pp. 28-34 More about this Journal
Abstract
The thrust control calculation according to the operation of plug nozzle for cold air test and the analysis of the flow characteristics of the pintle shape and operation pressure are performed. The numerical computation was verified by comparing the flow structure and the coefficient of thrust with the experimental data. It was confirmed that the nozzle throat was formed at the design position on each pintle shape, and thrust control up to 1:8 was achieved only by the stroke change. Finally, although the aerospike nozzle is autonomous, it is unfavorable in the under_expansion condition, if it is designed for a very low nozzle pressure ratio.
Keywords
Pintle; Conical Nozzle; Aerospike Nozzle; Thrust Control; Coefficient of Thrust;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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