Accession Number : AD0752959

Title :   Experimentelle und Theoretische Untersuchungen ueber die Instationaeren Flugmechanischen Derivativa der Laengsbewegung an Schlanken Flugkoerpern bei Maessiger Geschwindigkeit (Experimental and Theoretical Investigations of the Non-steady Flight-mechanical Derivatives of the Longitudinal Motion of Slender Aircraft Models Measured at Moderate Velocities),

Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V GOETTINGEN (WEST GERMANY)

Personal Author(s) : Schmidt,Eberhard

Report Date : 1971

Pagination or Media Count : 28

Abstract : A test set-up for the measurement of oscillatory longitudinal derivatives on sting mounted slender aircraft models has been developed and tested in the low-speed wind tunnel of the DFVLR at Braunschweig. The design of the balance is similar to the forced oscillation technique of test rig at RAE Bedford. Measurements of the pitch and heave derivatives of trapezoidal wings with aspect ratio one and various taper ratios at various angles of attack have shown the reliability of the facility.

Descriptors :   (*WIND TUNNELS, POSITIONING DEVICES(MACHINERY)), AERODYNAMICS, MODEL TESTS, WIND TUNNEL MODELS, DAMPING, PITCH(MOTION), ANGLE OF ATTACK, FLEXURAL STRENGTH

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE