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INVESTIGATION OF LOW-SUBSONIC FLIGHT CHARACTERISTICS OF A MODEL OF A HYPERSONIC BOOST-GLIDE CONFIGURATION HAVING A 78 DEGREE DELTA WING
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C
A model was flown over an angle-of-attack range from 10 to 35 degrees. Longitudinal stability and control characteristics were generally satisfactory with neutral or positive static longitudinal stability. The addition of artificial pitch damping resulted in satisfactory longitudinal characteristics with large amounts of static instability. The most rearward centerof-gravity position for which sustained flights could be made either with or without pitch damper corresponded to the calculated maneuver point. The lateral stability and control characteristics were satisfactory up to about 15 degree angle of attack. The damping of the Dutch roll oscillation decreassd with increasing angle of attack the oscillation was about neutrally stable at 20 degree angle of attack and unstable at angles of attack of about 25 degrees and above. Artificial damping in roll greatly improved the lateral characteristics and resulted in flights being made up to 35 degree angle of attack. Author