Accession Number : AD0264880

Title :   A TRANSONIC INVESTIGATION OF CHANGING INDENTATION DESIGN MACH NUMBER ON THE AERODYNAMIC CHARACTERISTICS OF A 45-DEGREE SWEPTBACK-WING--BODY COMBINATION DESIGNED FOR HIGH PERFORMANCE

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s) : LOVING,DONALD L.

Report Date : OCT 1961

Pagination or Media Count : 1

Abstract : The wing, designed to have high performance characteristics when used with an indented body, was tested in combination with an unindented body and bodies indented for mach numbers of 1.0, 1.2, an 1.4. At a given supersonic mach number, lowest values of zero-lift wave drag and highest values of maximum lift-drag ratio for the wingbody combinations were obtained at or near the specific mach number for which the body indentations were designed. Maximum lift-drag ratios of the order of 20 at subsonic speeds, 15 at mach number 1, 13 at mach 1.2, and 9 at mach 1.43 were obtained. Theoretically computed zero-lift wave drag was considered to be in good agreement with the experimental results.

Descriptors :   *AERODYNAMIC CONFIGURATIONS, *SUPERSONIC AIRCRAFT, *SWEPTBACK WINGS, *TRANSONIC CHARACTERISTICS, *WING BODY CONFIGURATIONS, AERODYNAMIC CHARACTERISTICS, AIRFOILS, DRAG, LIFT, MODEL TESTS, MOMENTS, STABILITY, SUPERSONIC FLOW, WIND TUNNEL MODELS

Distribution Statement : APPROVED FOR PUBLIC RELEASE