Zobrazeno 1 - 10
of 12
pro vyhledávání: '"H. K. Tanna"'
Publikováno v:
Journal of Sound and Vibration. 137:9-41
The potential of using “active noise control” to reduce cabin noise on the external fuselage surface of turboprop aircraft is demonstrated by conducting several laboratory experiments. The principle of active noise control is to reduce the noise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eebe6b73e2a54b89b277bc168ac5d91a
https://doi.org/10.1016/0022-460x(90)90714-b
https://doi.org/10.1016/0022-460x(90)90714-b
Autor:
Philip J. Morris, H. K. Tanna
Publikováno v:
Journal of Sound and Vibration. 98:213-234
The noise from subsonic coannular jets with normal velocity profiles (to represent typical high-bypass-ratio turbofan engines) is studied experimentally and theoretically. The ‘source alteration’ effects and the “flow-acoustic interaction” ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::089a2e262ee21a27f705dc15bdb5d062
https://doi.org/10.1016/0022-460x(85)90386-4
https://doi.org/10.1016/0022-460x(85)90386-4
This appendix volume presents a complete listing of the unified jet noise prediction computer program (UNIJET), developed to predict the total noise from a subsonic or supersonic jet under static conditions. In addition, a listing of the computer pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d6b840cb53244767205b332119e940c
https://doi.org/10.21236/ada064685
https://doi.org/10.21236/ada064685
Autor:
H. K. Tanna, N. N. Reddy
Publikováno v:
6th Aeroacoustics Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6331829d33af2a62e52e63c7a9794c40
https://doi.org/10.2514/6.1980-1044
https://doi.org/10.2514/6.1980-1044
Autor:
P. D. Dean, H. K. Tanna
Publikováno v:
2nd Aeroacoustics Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5efb46a3f9c9fee514091bebf659b764
https://doi.org/10.2514/6.1975-480
https://doi.org/10.2514/6.1975-480
Publikováno v:
11th Fluid and PlasmaDynamics Conference.
Jet mixing noise data at different measurement distances are compared with values calculated from the Lockheed prediction method. Although the method does not include any acoustic near-field effects, the measured and predicted results agree well wher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29fb95e80265ca3534cea8cb0dcf8478
https://doi.org/10.2514/6.1978-1153
https://doi.org/10.2514/6.1978-1153
Autor:
Philip J. Morris, H. K. Tanna
Publikováno v:
3rd Aeroacoustics Conference.
The effects of aircraft forward motion on pure turbulent mixing noise from unheated jets are examined experimentally in the inflight simulation mode. Both acoustic and flow characteristics are determined by testing model-scale nozzles in an anechoic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93b6ec1b9aade208b548162c0d77117b
https://doi.org/10.2514/6.1976-554
https://doi.org/10.2514/6.1976-554
Publikováno v:
5th Aeroacoustics Conference.
Inflight simulation experiments are conducted in an anechoic free-jet facility to examine the flight effects on various combinations of jet noise, shock noise and internal noise. The jet mixing noise component reduces with forward velocity at all ang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47ff254ec9128fcdd856342354f2ceb9
https://doi.org/10.2514/6.1979-615
https://doi.org/10.2514/6.1979-615
Autor:
Philip J. Morris, H. K. Tanna
Publikováno v:
7th Aeroacoustics Conference.
The noise from subsonic coannular jets with normal velocity profiles (to represent typical high-bypass-ratio turbofan engines) is studied experimentally and theoretically. The ‘source alteration’ effects and the “flow-acoustic interaction” ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5fb24502d904fd2d06d376014f1f183
https://doi.org/10.2514/6.1981-1992
https://doi.org/10.2514/6.1981-1992
Publikováno v:
6th Aeroacoustics Conference.
The installation effects on propeller noise and propeller wake flow in flight have been examined experimentally by operating a model-scale propeller in the Lockheed anechoic open-jet wind tunnel. In particular, two aspects of propeller operation in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19661fefc463ddbe34011d1123f0ea44
https://doi.org/10.2514/6.1980-993
https://doi.org/10.2514/6.1980-993