음원 분포선 위치가 발사체 이륙 음향하중에 미치는 영향Effect of source line location on lift-off acoustic loads of a launch vehicle

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 303
  • Download : 70
Intense acoustic load is generated when a launch vehicle lifts off, causing the damaging vibrations at the launch vehicle or satellite within the fairing. This paper is concerned with the prediction of lift-off acoustic loads for a launch vehicle. As a test example, the lift -off acoustic load on the Korean launch vehicle, NARO, is predicted by the existing calculation tool, the modified Eldred’s second method. Although the acoustic sources, assumed as point sources, are to be located along the center line of the exhaust plume in using the Eldred’s prediction method, the exact location of the deflected center line of exhaust gas flow is not usually known. To search for t he most appropriate source positions, six models of source line distribution are suggested and the acoustic load prediction results from these models are compared with the actual measurements. It is found that the prediction error for the Naro is the smallest when the centerline of the turbulent kinetic energy contour is used as the source line.
Publisher
한국소음진동공학회
Issue Date
2015-04-24
Language
Korean
Citation

2015년도 춘계 소음진동 학술대회, pp.470 - 473

URI
http://hdl.handle.net/10203/200517
Appears in Collection
ME-Conference Papers(학술회의논문)

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0