Airframe noise measurements on JAXA Jet Flying Test Bed "Hisho" using a phased microphone array. Issue 4 (July 2017)
- Record Type:
- Journal Article
- Title:
- Airframe noise measurements on JAXA Jet Flying Test Bed "Hisho" using a phased microphone array. Issue 4 (July 2017)
- Main Title:
- Airframe noise measurements on JAXA Jet Flying Test Bed "Hisho" using a phased microphone array
- Authors:
- Takaishi, Takehisa
Ura, Hiroki
Nagai, Kenichiro
Yokokawa, Yuzuru
Murayama, Mitsuhiro
Ito, Yasushi
Sakai, Ryotaro
Shoji, Hirokazu
Yamamoto, Kazuomi - Abstract:
- In 2015, the Japan Aerospace Exploration Agency launched theF light demonstration ofQU iet technology toR educe nO ise fromH igh-lift configurations project to verify by flight demonstration the feasibility of practical noise-reducing aircraft modification concepts. In order to serve as a baseline for comparison before modification, airframe noise sources of the JAXA Jet Flying Test Bed "Hisho" were measured with a 30 m diameter array of 195 microphones mounted on a wooden platform built temporary beside the runway of Noto Satoyama Airport in Japan. A classical Delay and Sum in the time domain beamforming algorithm was adapted for the present study, with weight factors introduced to improve the low-frequency resolution and autocorrelations eliminated to suppress wind noise at high frequencies. In the landing configuration at idle thrust, the main landing gear, nose landing gear, and side edges of the six extended flap panels were found to be the dominant "Hisho" airframe noise sources. Deconvolution by the DAMAS and CLEAN-SC algorithms provided clearer positions of these sound sources at low frequencies. Integration of acoustical maps agreed well with the sound pressure level measured by a microphone placed at the center of the microphone array and gave detailed information about the contribution of each noise source.
- Is Part Of:
- International journal of aeroacoustics. Volume 16:Issue 4/5(2017)
- Journal:
- International journal of aeroacoustics
- Issue:
- Volume 16:Issue 4/5(2017)
- Issue Display:
- Volume 16, Issue 4/5 (2017)
- Year:
- 2017
- Volume:
- 16
- Issue:
- 4/5
- Issue Sort Value:
- 2017-0016-NaN-0000
- Page Start:
- 255
- Page End:
- 273
- Publication Date:
- 2017-07
- Subjects:
- Airframe noise -- Phased microphone array -- Flyover test
Aerodynamic noise -- Periodicals
Acoustical engineering -- Periodicals
Sound -- Periodicals
629.1323 - Journal URLs:
- http://jae.sagepub.com ↗
http://multi-science.metapress.com/content/121495 ↗
http://www.metapress.com/openurl.asp?genre=journal&issn=1475-472X ↗
http://www.ingentaselect.com/vl=3599509/cl=37/nw=1/rpsv/cw/mscp/1475472x/contp1.htm ↗
http://www.multi-science.co.uk/ ↗ - DOI:
- 10.1177/1475472X17718725 ↗
- Languages:
- English
- ISSNs:
- 2048-4003
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 9704.xml