한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2005년도 추계 학술대회논문집
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- Pages.269-273
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- 2005
발사체 탑재물 페어링 내부 공기 공급을 위한 탑재 시스템 유동 해석
FLOW ANALYSIS OF THE ON-BOARD SYSTEM FOR THE AIR SUPPLY TO THE PAYLOAD FAIRING OF A LAUNCH VEHICLE
초록
The on-board system for the air supply to the payload fairing(PLF) of a launch vehicle using both high and low pressure air was designed. The design concept was obtained from the CFD analysis of a Russian interstage air supply system, and a collector was adopted to expand the high pressure air. To verify that the on-board system would work as designed, a simplified axisymmetric computational model was made and a CFD analysis was also performed. It was found that the flow ejected from the hole of the collector expands to the Mach number of 4 and is soon retarded due to the action of viscosity. It was also found that a small gap between the low pressure duct and equipment bay wall can cause large velocity in PLF over the velocity requirement and no gap should be allowed in the design.
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