Using Numerical Simulations to Explore Top-Mounted Propulsion on a Conceptual Commercial Supersonic Transport Aircraft

Friedlander, David J

关键词: COMPUTATIONAL FLUID DYNAMICS;    SUPERSONIC TRANSPORTS;    PROPULSION;    SIMULATION;    BOUNDARY CONDITIONS;    REYNOLDS AVERAGING;    TAKEOFF;    TURBULENCE MODELS;    NAVIER-STOKES EQUATION;   

RP-ID  :  NASA/TM-2018-219987,E-19596,GRC-E-DAA-TN59212

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Reynolds Averaged Navier-Stokes (RANS) simulations were performed on an N+2 conceptual commercial supersonic transport aircraft to explore the possibility of relocating the engines from below the wings to above the wings in order to capitalize upon potential noise shielding benefits. The simulations focused on the feasibility of the top-mounted propulsion configuration in terms of inlet performance and flow separation around the nacelles at take-off conditions for both 0deg and 8deg angle of attack. The results showed overall good inlet performance and little separation around the nacelles. The results were comparable to the engines in their original underwing configuration.