Accession Number:

AD0260761

Title:

LOW-SUBSONIC MEASUREMENTS OF THE STATIC STABILITY AND CONTROL AND OSCILLATORY STABILITY DERIVATIVES OF A PROPOSED REENTRY VEHICLE HAVING AN EXTENSIBLE HEAT SHIELD FOR HIGH-DRAG REENTRY

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Report Date:

1961-08-01

Pagination or Media Count:

1.0

Abstract:

A low-speed investigation has been made to determine the static and oscillatory longitudinal and lateral stability derivatives of a proposed reentry vehicle having an extensible heat shield for reentry at high angles of attack. The heat shield is extended forward to give the desired aerodynamic-center position of high-angle-ofattack reentry and, after completion of the reentry phase, is retracted to give stability and trim for gliding flight at low angles of attack. Near an angle of attack of 90 egrees the reentry configuration was statically stable both longitudinally and directionally, had positive dihedral effect, and had positive damping in roll but zero damping in yaw. The landing configuration had positive damping in pitch, roll, and yaw over the test angle-of-attack range ut was directionally unstable and had negative dihedral effect between an angle of attack of about 10 and 20 degrees. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE