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http://dx.doi.org/10.6108/KSPE.2022.26.5.063

M4 Semi-Freejet Test with Full-scale Vehicle Model  

Juhyun Bae (The First R&D Institute, Agency for Defense Development)
Changwon Lim (The First R&D Institute, Agency for Defense Development)
Hojin Choi (The First R&D Institute, Agency for Defense Development)
Sangwook Jin (The First R&D Institute, Agency for Defense Development)
Jeongwoo Kim (Aerospace Technology Research Institute, Agency for Defense Development)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.5, 2022 , pp. 63-73 More about this Journal
Abstract
Investigation on operation of the test apparatus for the M4 semi-freejet tests with a full-scale vehicle model was carried out utilizing domestic facilities. An integrated design of the experimental apparatus and the vehicle model was obtained through iterative computational fluid dynamics (CFD) analysis. The test results showed that the M4 nozzle of the apparatus was fully expanded to provide required test conditions. It was also found that the intake of the vehicle model successfully started, and the corresponding shadowgraph images were recorded during the test. A variable nozzle of the model was set to adjust the back pressure of the model combustor, and wall-static pressures were measured to obtain the pressure distribution at the main locations of the model. The flame of torch ignitors and pilot fuel ignition were observed in a flame-holder of the combustor.
Keywords
Semi-Freejet Test; Full-scale Vehicle Model; Variable Nozzle; Pilot Fuel Ignition;
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Times Cited By KSCI : 2  (Citation Analysis)
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