Long rise-time pressure signature through jet turbulence in a laboratory-scale experiment

Takahiro Ukai, Yuta Saito, Ko Miyakoshi, Takayoshi Yamaguchi, Kiyonobu Ohtani, Shigeru Obayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Turbulence effect on a pressure signature with the long rise time was experimentally investigated in a ballistic range facility to evaluate robustness of a low sonic boom signature. The long rise time pressure signature was produced by launching a conical projectile. High-speed schlieren photography and point-diffraction interferometer were used to visualize the density field. The pressure waveform was measured using a pressure transducer. The turbulence effect is not critical issue for the long rise time pressure signature. The long rise time pressure signature possesses feature that the overpressure slowly increases; this is not a shock wave. A pressure wave which is not a shock wave is not affected by turbulence, although the turbulence effect appears on a shock wave possessing the short rise time.

Original languageEnglish
Title of host publication29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014
PublisherInternational Council of the Aeronautical Sciences
ISBN (Electronic)3932182804
Publication statusPublished - 2014 Jan 1
Event29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014 - St. Petersburg, Russian Federation
Duration: 2014 Sep 72014 Sep 12

Publication series

Name29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014

Other

Other29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014
CountryRussian Federation
CitySt. Petersburg
Period14/9/714/9/12

Keywords

  • Laboratory-scale experiment
  • Low sonic boom
  • Shock-turbulence interaction

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Materials Science(all)

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