Static Performance of Six Innovative Thrust Reverser Concepts for Subsonic Transport Applications: Summary of the NASA Langley Innovative Thrust Reverser Test Program (Google eBook)

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DIANE Publishing, 2000 - Aerodynamics - 366 pages
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The NASA Langley Configuration Aerodynamics Branch has conducted an experimental investigation to study the static performance of innovative thrust reverser concepts applicable to high-bypass-ratio turbofan engines. Testing was conducted on a conventional separate-flow exhaust system configuration, a conventional cascade thrust reverser configuration, and six innovative thrust reverser configurations. The innovative thrust reverser configurations consisted of a cascade thrust reverser with porous fan-duct blocker, a blockerless thrust reverser, two core-mounted target thrust reversers, a multi-door crocodile thrust reverser, and a wing-mounted thrust reverser. Each of the innovative thrust reverser concepts offer potential weight savings and/or design simplifications over a conventional cascade thrust reverser design. Testing was conducted in the Jet-Exit Test facility at NASA Langley Research Center using a 7.9% scale exhaust system model with a fan-to-core bypass ratio of approximately 9.0. All tests were conducted with no external flow and cold, high-pressure air was used to simulate core and fan exhaust flows. Results show that the innovative thrust reverser concepts achieved thrust reverser performance levels which, when taking into account the potential for system simplification and reduced weight, may make them competitive with, or potentially more cost effective than current state-of-the-art thrust reverser systems.
  

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Page 30 - Mercer, Charles E.; Berrier, Bobby L.; Capone, Francis J.; and Grayston, Alan M.: Data Reduction Formulas for the 16-Foot Transonic Tunnel-NASA Langley Research Center.
Page 1 - Results show that the innovative thrust reverser concepts achieved thrust reverser performance levels which, when taking into account the potential for system simplification and reduced weight, may make them competitive with, or potentially more cost effective than current state-of-the-art thrust reverser systems.
Page 30 - Test results have shown that several innovative thrust reverser concepts achieve thrust reverser effectiveness levels which, when considering the potential for system simplification and reduced weight, may make them competitive with the current state-of-art thrust reverser systems.
Page 30 - Poland, Dyckman T.: The Aerodynamics of Thrust Reversers for High Bypass Turbofans. AIAA 67-418, July 1967.

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