| A 1/10 Scale Model Test of a Fixed Chute Mixer-Ejector Nozzle in Unsuppressed Model. Part 1; Test Overview Contributor(s): Administration (Nasa), National Aeronaut (Author) |
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ISBN: ISBN-13: 9798670036788 Publisher: Independently Published OUR PRICE: $26.99 Product Type: Paperback Published: July 2020 * Not available - Not in print at this time * |
| Additional Information |
| BISAC Categories: - Science | Space Science |
| Physical Information: 0.05" H x 8.5" W x 11.02" (0.18 lbs) 24 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: This paper discusses a test of a nozzle concept for a high-speed commercial aircraft. While a great deal of effort has been expended to und erstand the noise-suppressed, take-off performance of mixer-ejector n ozzles, little has been done to assess their performance in unsuppressed mode at other flight conditions. To address this, a 1/10th scale m odel mixer-ejector nozzle in unsuppressed mode was tested at conditio ns representing transonic acceleration, supersonic cruise, subsonic cruise, and approach. Various configurations were tested to understand the effects of acoustic liners and several geometric parameters, such as throat area, expansion ratio, and nozzle length on nozzle performance. Thrust, flow, and internal pressures were measured. A statistica l model of the peak thrust coefficient results is presented and discussed. Wolter, John D. Glenn Research Center NASA/TM-2007-213601/PART1, E-15068/PART1 WBS 984754.02.07.03.11.03 MATHEMATICAL MODELS; MIXERS; CONVERGENT-DIVERGENT NOZZLES; SCALE MODELS; EXHAUST NOZZLES; NOZZLE DESIGN; COMMERCIAL AIRCRAFT; NOISE REDUCTION; JET AIRCRAFT NOISE |