Accession Number : AD0255851

Title :   NORMAL-FORCE AND HINGE-MOMENT CHARACTERISTICS AT TRANSONIC SPEEDS OF FLAP-TYPE AILERONS AT THREE SPANWISE LOCATIONS ON A 4-PERCENT-THICK SWEPTBACK-WING-BODY MODEL AND PRESSURE-DISTRIBUTION MEASUREMENTS ON AN INBOARD AILERON

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s) : RUNCKEL,JACK F. ; HIESER,GERALD

Report Date : MAY 1961

Pagination or Media Count : 1

Abstract : An investigation was conducted at the Langley 16-foot transonic tunnel to determine the loading characteristics of flap-type ailerons located at inboard, midspan, and outboard positions on a 45 degree sweptback-wing-body combination. Aileron normal-force and hinge-moment data have been obtained at Mach numbers from 0.80 to 1.03, at angles of attack up to about 27 degrees, and at aileron deflections between approximately -15 degrees and 15 degrees. Results of the investigation indicate that the loading over the ailerons was established by the wing-flow characteristics, and the loading shapes were irregular in the transonic speed range. The spanwise location of the aileron had little effect on the values of the slope of the curves of hinge-moment coefficient against aileron deflection, but the inboard aileron had the greatest value of the slope of curves of hinge-moment coefficient against angle of attack and the outboard aileron had the least. Hinge-moment and aileron normal-force data taken with strain-gage instrumentation are compared with data obtained with pressure measurements. (Author)

Descriptors :   *AILERONS, *CONTROL SURFACES, LOAD DISTRIBUTION, MEASUREMENT, MODEL TESTS, MOMENTS, PRESSURE, STRAIN GAGES, SWEPTBACK WINGS, TRANSONIC CHARACTERISTICS, TRANSONIC WIND TUNNELS, WING BODY CONFIGURATIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE