Accession Number : ADP004103

Title :   A Technique to Determine Lift and Drag Polars in Flight,

Corporate Author : MESSERSCHMITT-BOELKOW-BLOHM G M B H MUNICH (GERMANY F R)

Personal Author(s) : Knaus,A.

Report Date : JUL 1984

Pagination or Media Count : 14

Abstract : Performance trials of the European combat aircraft TORNADO have concentrated on the systematic measurement of lift and drag polars. Such polars have been successfully measured by means of well-adapted test instrumentation, a data reduction system, and a high calibration standard of the aircraft and engines. The use of a certain combination of steady-state and dynamic test maneuvers has resulted in a drastic reduction in the amount of flight time required to obtain sufficient data for the determination of the zero lift drag, induced drag characteristics and drag increments due to aircraft configuration changes. Flight test results are presented which demonstrate the advantage of the test technique used and the high data quality achieved.

Descriptors :   *Variable sweep wings, *Flight maneuvers, Aerodynamic characteristics, Jet fighters, Thrust, Aerodynamic lift, Aerodynamic drag, Angle of attack, Flight testing, Aerodynamic forces, Measurement, Data acquisition, Instrumentation, Inflight, Data processing, Aerodynamic configurations, Optimization, West Germany

Distribution Statement : APPROVED FOR PUBLIC RELEASE