NASA and the U.S. aerospace industry have been assessing the economic viability and environmental acceptability of a second-generation supersonic civil transport, or High Speed Civil Transport (HSCT). Development of a propulsion system that satisfies strict airport noise regulations and provides high levels of cruise and transonic performance with adequate takeoff performance, at an acceptable weight, is critical to the success of any HSCT program. The principal objectives were to: 1. Develop a preliminary design of an innovative 2-D exhaust nozzle with the goal of meeting FAR36 Stage III noise levels and providing high levels of cruise performance with a high specific thrust for Mach 2.4 HSCT with a range of 5000 nmi and a payload of 51,900 lbm, 2. Employ advanced acoustic and aerodynamic codes during preliminary design, 3. Develop a comprehensive acoustic and aerodynamic database through scale-model testing of low-noise, high-performance, 2-D nozzle configurations, based on the preliminary design, and 4. Verify acoustic and aerodynamic predictions by means of scale-model testing. The results were: 1. The preliminary design of a 2-D, convergent/divergent suppressor ejector nozzle for a variable-cycle engine powered, Mach 2.4 HSCT was evolved, 2. Noise goals were predicted to be achievable for three takeoff scenarios, and 3. Impact of noise suppression, nozzle aerodynamic performance, and nozzle weight on HSCT takeoff gross weight were assessed.


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    Title :

    Low Noise Exhaust Nozzle Technology Development


    Contributors:
    R. K. Majjigi (author) / C. Balan (author) / V. Mengle (author) / J. F. Brausch (author) / H. Shin (author)

    Publication date :

    2005


    Size :

    169 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Low Noise Exhaust Nozzle Technology Development

    Majjigi, R. K. / Balan, C. / Mengle, V. et al. | NTRS | 2005


    Advanced technology exhaust nozzle development

    DUSA, D. / SPEIR, D. / ROWE, R. et al. | AIAA | 1983


    Advanced technology exhaust nozzle development

    Dusa, D. J. / Speir, D. W. / Rowe, R. K. et al. | NTRS | 1983


    Vectoring exhaust nozzle technology

    BARNES, G. / CURRY, S. / WOOD, A. | AIAA | 1984


    IHPTET exhaust nozzle technology demonstrator

    HAWKES, TIM / OBYE, ROGER | AIAA | 1993