Web23. máj 2012 · Space Shuttle entry guidance performance results. ... Variable Angle-of-attack Profile Entry Guidance for a Crewed Lifting Body. ... Journal of the Korean Society for Aeronautical & Space Sciences, Vol. 30, No. 1. Nonlinear trajectory control using drag-to-altitude transformation for entry guidance. WebSpace Shuttle true airspeed, angle of attack, and sideslip angle are currently derived from inertial guidance information. A new method is proposed which offers a potential improvement in Shuttle safety during entry. Angle of attack, sideslip angle and true airspeed could be measured directly at heights from 120 km down to 20 km by Doppler sensing …
NASA - The Aeronautics of the Space Shuttle
WebBecause the Orbiter wings developed lift at zero angle of attack, the high dynamic pressure portion of ascent had to be flown at a negative angle of attack, close to the zero lift angle. This could have been done heads-up or down, but the early crew members expressed a preference for having a horizon view. This led to the heads-down attitude. WebThe guidance program is a precalculated lookup table of pitch vs time. Control is done with engine gimballing and/or aerodynamic control surfaces. The pitch program maintains a zero angle of attack (the definition of a gravity turn) until the vacuum of space is reached, thus minimizing lateral aerodynamic loads on the vehicle. federal management company inc
Space Shuttle Flying Qualities and :Flight ~Control System ... - NASA
WebWind tunnel tests of the Space Shuttle launch configuration conducted in early 1974 to determine if the elevons were going to exceed the load limits of their actuators. ... i.e., at negative angle of attack. Thus, the scheme was to fly the wings at near zero panel load and to deflect the elevons as a function of Mach number to track close to ... WebIf the angle of attack is too shallow, the capsule may skip off the surface of the atmosphere. If the angle of attack is too steep, the deceleration forces may be too high or the heat of reentry may exceed the tolerances of the … Web4. sep 2003 · That means shock waves that are at 90 degree angles to the flow. Angled shock waves are called 'oblique'. Oblique shock waves form when a wave hits a non … decrease in kidney function reasons