Browse > Article

Prediction of Lift-off Acoustic Loads of KSLV-I and Its Comparison with Flight Measurements  

Park, Soon-Hong (한국항공우주연구원 발사체구조팀)
Seo, Sang-Hyun (한국항공우주연구원 발사체구조팀)
Jang, Young-Soon (한국항공우주연구원 발사체구조팀)
Publication Information
Aerospace Engineering and Technology / v.10, no.1, 2011 , pp. 13-19 More about this Journal
Abstract
Lift off acoustic loads of KSLV-I were predicted by the modified NASA SP-8072 source distribution method (method 2) and the result was compared with those of measurements in the flight test of KSLV-I. In the second flight test, lift off acoustic loads were measured by outer microphones attached on the cable mast. The onboard data measuring outer acoustic pressure at the interstage of KSLV-I also can be obtained. The predicted result showed very similar peak and the shape of spectrum when compared with the measured spectrum and a margin about +7 dB.
Keywords
acoustic loads; lift-off; flight test;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Park, S.-H., Seo, S.-H., Jang, Y.-S., "Experimental Evaluation of Passive Acoustic Absorbers for the Reduction of Acoustic Loads of Launch Vehicles," Proceedings of the KSNVE Annual Autumm Conference, 2009, pp. 615-616
2 Eldred, K., "Acoustic Loads Generated by the Propulsion System," NASA SP-8072, 1971
3 Haynes, J., Kenny, R. J., "Modifications to the NASA SP-8072 Distributed Source Method II for Ares I Lift-off Environment Predictions," 15th AIAA/CEAS Aeroacoustics Conference, 2009, AIAA-2009-3160
4 M. E. Goldstein, Aeroacoustics, McGraw Hill (NewYork), 1976
5 H. R. Mull, "Effect of Jet Structure onNoise Generation by Supersonic Nozzles," J. Acoust. Soc. Am, 31(2), 1959, pp. 147-149   DOI
6 Troclet, B., Chemoul, B., Roux P., Gely D., Elias, G., "Synthesis of Vibroacoustic Studies Performed during Ariane 5 Program," 1er Colloque Europeen sur la Technologie des Lanceurs "Vibration des Lanceurs" Toulouse, France, 1999
7 Park, S.-H., Seo, S.-H., Jeong, H.-K., Jang, Y.-S., Yi, Y.-M., and Cho, G.-R, "Lift-off Vibro-acoustic Analysis of the Upper Stage of Small Launch Vehicle," ICSV 13, Vienna, Austria. 2006