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Comparison Of The Aeroacoustics Of Two Small Scale Supersonic Inlets
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722970796 Total Pages :136 pages Book Rating :4.9/5 (77 download)
Book Synopsis Comparison of the Aeroacoustics of Two Small-Scale Supersonic Inlets by : National Aeronautics and Space Administration (NASA)
Download or read book Comparison of the Aeroacoustics of Two Small-Scale Supersonic Inlets written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aerodynamic and acoustic investigation was performed on two small-scale supersonic inlets to determine which inlet would be more suitable for a High Speed Civil Transport (HSCT) aircraft during approach and takeoff flight conditions. The comparison was made between an axisymmetric supersonic P inlet and a bifurcated two-dimensional supersonic inlet. The 1/14 scale model supersonic inlets were used in conjunction with a 4.1 in (10.4 cm) turbofan engine simulator. A bellmouth was utilized on each inlet to eliminate lip separation commonly associated with airplane engine inlets that are tested under static conditions. Steady state measurements of the aerodynamic flowfield and acoustic farfield were made in order to evaluate the aeroacoustic performance of the inlets. The aerodynamic results show the total pressure recovery of the two inlets to be nearly identical, 99% at the approach condition and 98% at the takeoff condition. At the approach fan speed (60% design speed), there was no appreciable difference in the acoustic performance of either inlet over the entire 0 deg to 110 deg farfield measurement sector. The inlet flow field results at the takeoff fan speed (88% design speed), show the average inlet throat Mach number for the P inlet (Mach 0.52) to be approximately 2 times that of the 2D inlet (Mach 0.26). The difference in the throat Mach number is a result of the smaller throughflow area of the P inlet. This reduced area resulted in a 'soft choking' of the P inlet which lowered the tone and overall sound pressure levels of the simulator in the forward sector by an average of 9 dB and 3 dB, respectively, when compared to the 2D inlet. Ng, Wing Glenn Research Center AEROACOUSTICS; SUPERSONIC INLETS; ENGINE INLETS; AIRCRAFT ENGINES; FLOW DISTRIBUTION; FLOW MEASUREMENT; MACH NUMBER; INLET FLOW; SUPERSONIC TRANSPORTS; CIVIL AVIATION; TAKEOFF; APPROACH; TURBOFAN ENGINES; SCALE MODELS; SIMULATORS; SOUND PRESSURE; PRESSURE RECOVERY; FAR FIELDS; ACOUSTIC PROPERTIES...
Book Synopsis Comparison of the Aeroacoustics of Two Small-scale Supersonic Inlets by : Kevin C. Miller
Download or read book Comparison of the Aeroacoustics of Two Small-scale Supersonic Inlets written by Kevin C. Miller and published by . This book was released on 1996 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1993 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Book Synopsis Aeroacoustic Measurement and Analysis of Transient Supersonic Hot Nozzle Flows by : Daniel Robert Kirk
Download or read book Aeroacoustic Measurement and Analysis of Transient Supersonic Hot Nozzle Flows written by Daniel Robert Kirk and published by . This book was released on 1999 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Struts on Aeroacoustics of Axisymmetric Supersonic Inlets by : Abhijit Pande
Download or read book Effect of Struts on Aeroacoustics of Axisymmetric Supersonic Inlets written by Abhijit Pande and published by . This book was released on 1994 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeroacoustics by : Henry T. Nagamatsu
Download or read book Aeroacoustics written by Henry T. Nagamatsu and published by . This book was released on 1975 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AIAA 6th Aeroacoustics Conference by :
Download or read book AIAA 6th Aeroacoustics Conference written by and published by . This book was released on 1980 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeroacoustics of the Bifurcated 2D Supersonic Inlet by : Robert Wagner
Download or read book Aeroacoustics of the Bifurcated 2D Supersonic Inlet written by Robert Wagner and published by . This book was released on 1995 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Struts on Aeroacoustics of Axisymmetric Supersonic Inlets by : Abhijit Pande
Download or read book Effect of Struts on Aeroacoustics of Axisymmetric Supersonic Inlets written by Abhijit Pande and published by . This book was released on 1994 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shi-Ming Li, Carol A. Hanuska and Wing Fai Ng: An experimental investigation of the aeroacoustics of a two-dimensional bifurcated supersonic inlet by : Mirko Čudina
Download or read book Shi-Ming Li, Carol A. Hanuska and Wing Fai Ng: An experimental investigation of the aeroacoustics of a two-dimensional bifurcated supersonic inlet written by Mirko Čudina and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeroacoustics of Flight Vehicles by : Harvey H. Hubbard
Download or read book Aeroacoustics of Flight Vehicles written by Harvey H. Hubbard and published by . This book was released on 1991 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of a Large-scale, Two-dimensional, Mixed-compression Inlet System by : Norman D. Wong
Download or read book Experimental Investigation of a Large-scale, Two-dimensional, Mixed-compression Inlet System written by Norman D. Wong and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large-scale, variable-geometry inlet model with a design Mach number of 3.0 was tested at Mach numbers from 1.55 to 3.2. Variable features of the inlet for off-design operation are an adjustable-height ramp system and a translating cowl. This report presents experimental results for a diffuser and boundary-layer bleed configuration which was optimized at the design Mach number. Overall performance was high with throat-mounted vortex generators, which were effective in reducing flow distortion in the subsonic diffuser at the higher Mach numbers.
Book Synopsis ICASE/LaRC Workshop on Benchmark Problems in Computational Aeroacoustics (CAA) by : Jay C. Hardin
Download or read book ICASE/LaRC Workshop on Benchmark Problems in Computational Aeroacoustics (CAA) written by Jay C. Hardin and published by . This book was released on 1995 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Lewis Research Center Technical Publications Announced in 1977 by : Lewis Research Center
Download or read book Bibliography of Lewis Research Center Technical Publications Announced in 1977 written by Lewis Research Center and published by . This book was released on 1978 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation of abstracts describes and indexes over 780 technical reports resulting from the scientific and engineering work performed and managed by the Lewis Research Center in 1977. All the publications were announced in the 1977 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Documents cited include research reports, journal articles, conference presentations, patents and patent applications, and theses.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
