TY - GEN
T1 - An acoustic investigation of a supersonic, multi-stream jet with aft deck
T2 - 54th AIAA Aerospace Sciences Meeting, 2016
AU - Berry, Matthew G.
AU - Magstadt, Andrew S.
AU - Glauser, Mark N.
AU - Ruscher, Christopher J.
AU - Gogineni, Sivaram
AU - Kiel, Barry V.
N1 - Funding Information:
The authors would like to acknowledge Spectral Energies, LLC. Phase II SBIR, with AFRL for the ongoing support and interactions throughout these research endeavors. The authors also acknowledge Dr. Jacques Lewalle, Pingqing Kan (Syracuse University), and Dr. Alex Giese (AFRL) for many insightful discussions throughout the experiments and analysis. Additional thanks to Dr. James Gord, Amy Lynch, and Dr. Benjamin Halls for providing valuable equipment and Thomas Coleman (Syracuse University) for helping to acquire this comprehensive dataset.
Publisher Copyright:
© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2016
Y1 - 2016
N2 - The current experiments investigate the acoustic characteristics of an idealized, supersonic rectangular nozzle with aft deck used for three-stream engines. Since the second stream for these jet configurations mix with the bulk flow far before the nozzle's exit plane, a completely mixed first and second stream is assumed. Thus, this jet is represented as two unmixed exhaust flows that come from a three-stream engine. The nozzle is configured as a rectangular single expansion ramp (SERN) convergent/divergent (CD) nozzle with a variable speed bypass (3rd) stream. By varying the Mach number in the 3rd stream, we are able to alter the flow towards a state of “lower noise” while causing minimal effects to the mass flow rate of the jet. The experiments were conducted using far-field microphone arrays, aft deck pressure measurements, schlieren imaging, and investigates different aft deck lengths and far-field locations.
AB - The current experiments investigate the acoustic characteristics of an idealized, supersonic rectangular nozzle with aft deck used for three-stream engines. Since the second stream for these jet configurations mix with the bulk flow far before the nozzle's exit plane, a completely mixed first and second stream is assumed. Thus, this jet is represented as two unmixed exhaust flows that come from a three-stream engine. The nozzle is configured as a rectangular single expansion ramp (SERN) convergent/divergent (CD) nozzle with a variable speed bypass (3rd) stream. By varying the Mach number in the 3rd stream, we are able to alter the flow towards a state of “lower noise” while causing minimal effects to the mass flow rate of the jet. The experiments were conducted using far-field microphone arrays, aft deck pressure measurements, schlieren imaging, and investigates different aft deck lengths and far-field locations.
UR - http://www.scopus.com/inward/record.url?scp=85007534148&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85007534148&partnerID=8YFLogxK
U2 - 10.2514/6.2016-1883
DO - 10.2514/6.2016-1883
M3 - Conference contribution
AN - SCOPUS:85007534148
SN - 9781624103933
T3 - 54th AIAA Aerospace Sciences Meeting
BT - 54th AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
Y2 - 4 January 2016 through 8 January 2016
ER -