This annual report covers research and development activities in experimental aerodynamics carried out at the Indian National Trisonic Aerodynamic Facility. Production was doubled in the course of a year with a total of 1600 blowdowns carried out. The effects of pitot probes, angles of attack, vanes, etc., and their locations on the buzz boundaries of air intakes were systematically studied. The studies indicated that pressure fluctuations downstream of retro rockets could be reduced significantly by proper shaping. Other tests determined control surface effectiveness on a missile model. In the area of flow structure and management, research continued on vortex flows on wings and bodies and aerodynamic drag reduction. In the area of aircraft and missile aerodynamics, the MAHAA code was extended to predict drag characteristics on the aerodynamic configurations at trisonic speeds.
Experimental Aerodynamics Division
1994
82 pages
Report
No indication
English
Aerodynamics , Missile Trajectories & Reentry Dynamics , Aerodynamic configurations , Flow distribution , Missile configurations , Research and development , Trisonic wind tunnels , Wind tunnel models , India , Air intakes , Angle of attack , Control surfaces , Drag reduction , Launch vehicles , Pressure oscillations , Vanes , Vortices , Wings , Foreign technology
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