Accession Number : AD0285789

Title :   MEASUREMENT OF AERODYNAMIC CHARACTERISTICS OF RE-ENTRY CONFIGURATIOONS IN FREE FLIGHT AT HYPERSONIC AND NEAR-ORBITAL SPEEDS

Corporate Author : ADVISORY GROUP FOR AERONAUTICAL RESEARCH AND DEVELOPMENT PARIS (FRANCE)

Personal Author(s) : NELSON, R.L.

Report Date : JUL 1961

Pagination or Media Count : 27

Abstract : URATIONS IN RE-ENTRY FLIGHT AT VERY HIGH SPEEDS HAS REQUIRED EXTENSIONS OF TECHNIQUES DEVELOPED EARLIER FOR AIRCRAFT AND LOW-SPEED MISSILES. EXTENSIONS ARE MADE FROM RECENT THEORETICAL STUDIES OF RE-ENTRY MECHANICS AND DYNAMICS AND THEIR APPLICATION TO FLIGHT MEASUREMENTS. EMPHASIS IS PLACED ON THE REDUCTION OF FLIGHT OSCILLATION DATA TO OBTAIN STATIC PITCHING MOMENT AND DAMPING DATA. HIGHLY NONLINEAR CHARACTERISTICS ARE ASSUMED. THROUGH APPLICATION OF THE PROCEDURE TO FLIGHT DATA AND A DIGITAL-COMPUTER SOLUTION, THE REDUCTION TECHNIQUE IS SHOWN TO BE ADEQUATE FOR RE-ENTRY CONFIGURATIONS TRIMMED ABOUT ZERO ANGLE-OF-ATTACK

Descriptors :   *ATMOSPHERE ENTRY, *REENTRY VEHICLES, EQUATIONS, FREE FLIGHT TRAJECTORIES, HYPERSONIC CHARACTERISTICS, MATHEMATICAL ANALYSIS, MATHEMATICAL PREDICTION, OSCILLATION, PITCH (MOTION), ROLL.

Distribution Statement : APPROVED FOR PUBLIC RELEASE