In 2016, NASA's Aeronautics Research Mission Directorate announced the New Aviation Horizons Initiative with a goal of designing/building several X-Planes, including a Low Boom Flight Demonstrator (LBFD). That same year, NASA awarded a contract to Lockheed Martin (LM) to advance the LBFD concept through preliminary design. Several configurations of the LBFD aircraft were analyzed by both LM engineers and NASA researchers. This presentation focuses on some of the CFD simulations that were run by NASA Glenn researchers. NASA's FUN3D V13.1 code was used for all adjoint-based grid refinement studies and Spalart-Allmaras turbulence model was used during adaptation. It was found that adjoint-based grid adaptation did not accurately capture inlet performance for high speed top-aft-mounted propulsion.
Lessons Learned from Inlet Integration Analysis of NASA's Low Boom Flight Demonstrator
2017
22 pages
Report
Keine Angabe
Englisch
Aircraft , Test Facilities & Equipment , Lessons learned , Sonic booms , Computational fluid dynamics , Wind tunnel tests , Supersonic wind tunnels , Engine tests , Engine inlets , Inlet airframe configurations , Turbulence models , Navier-stokes equation , Mathematical models , Pressure measurement , Unstructured grids (mathematics) , Nasa programs , Numerical analysis