Accession Number : AD0704722

Title :   THE DETERMINATION OF UNSTEADY AERODYNAMICS OF A TWO-DIMENSIONAL JET-FLAP WING.

Descriptive Note : Final technical rept. Apr 66-Mar 70,

Corporate Author : CORNELL AERONAUTICAL LAB INC BUFFALO N Y

Personal Author(s) : Trenka,Andrew R. ; Erickson,John C. , Jr

Report Date : APR 1970

Pagination or Media Count : 96

Abstract : One of the purposes of the study was to conduct wind-tunnel tests on a two-dimensional, oscillating, jet-flap airfoil to determine the unsteady forces, moments, and pressure distributions. These tests were to (1) provide data for testing the validity of the theoretical results, and (2) to furnish guide-lines for the further development of unsteady jet-flap airfoil theory. The study was also to extend the solutions to the general theoretical equations describing the unsteady motions of a jet-flapped airfoil executing simple harmonic pitching motions. The attainment of these objectives was pursued in three phases. The first consisted of the development, calibration and testing of the model and its recording system. The second phase dealt with the theoretical effort required to allow computation of the lift and moment acting on a two-dimensional jet-flap airfoil executing harmonic pitching motions. The third and final phase consisted of the correlation of theory and experiment and the assessment of the theory. (AUTHOR)

Descriptors :   (*WINGS, TWO DIMENSIONAL FLOW), JET FLAPS, OSCILLATION, STABILITY, PRESSURE, PITCH(MOTION), WIND TUNNEL MODELS, MODEL TESTS, LIFT, MOMENTS, THEORY

Subject Categories : Aerodynamics
      Aircraft
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE