Sept 17 1975
From The Space Library
One of the most highly detailed and instrumented models of the Space Shuttle ever constructed had been wind-tunnel-tested at the Arnold Engineering Development Center, the Air Force Systems Command announced. Located throughout the 92-cm model were 835 temperature sensors to measure heat levels of major components at jettison of the two expended solid-propellant boosters.
Two other Shuttle tests also had been completed for NASA at AEDC: A smaller model and computer-controlled systems were used to study aerodynamic forces during the separation of the expended solid boosters. During the test the Orbiter and external fuel-tank models were attached to the tunnel supports and a solid booster model was attached to the computer-controlled support. Measurements were recorded with a single booster model at various points below, beside, and behind the Orbiter-tank combination and with the booster and Orbiter-tank at various pitch and yaw angles.
In the third test, heating data were obtained on an Orbiter model positioned at a high angle of attack at mach 8. Special paints that changed from a solid to a liquid at specified temperatures were used to record heating histories on the surface of the model, and oil coating techniques were used to examine airflow. (AFSC Release 01P 226.75)
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