Longitudinal Stability Characteristics of Several Proposed Planetary Entry Vehicles at Mach 6.73

Content Provider	Semantic Scholar
Author	Bernot, Peter T.
Copyright Year	1968
Abstract	SUMMARY Aerodynamic characteristics of several planetary entry vehicles with dif- ferent nose-bluntness ratios were obtained over an angle-of-attack range from 0' to 140' at a Mach number of 6.73 and Reynolds numbers 0.19 x lo6 and 0.25 x 10 6 . At an angle of attack Oo, the flow about these configurations was characterized by large-scale flow separation accompanied by shock-wave fluctuations, notably for the sharp-nose model. As angle of attack was increased to about loo, this separated-flow region on the windward side of the model was swept aside with the result that large increases occurred in normal and axial force and in pitching moment. obtained for all the models at an angle of attack of 0'; for the tests at angles of attack greater than goo, the models showed no additional stable trim points. attack of 0' as center-of-gravity location was varied longitudinally from 20 to 90 percent of the body length from the nose. Varying the location of the center of gravity along the vertical axis as much as
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Alternate Webpage(s)	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650012767.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article