Accession Number : ADA293888

Title :   F/A-18 IFOSTP Fatigue Test Airbag Load Determination on the Vertical and Horizontal Tails.

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

Personal Author(s) : Lee, Michael F.

PDF Url : ADA293888

Report Date : JAN 1995

Pagination or Media Count : 55

Abstract : A simplistic method for determining discrete loads to approximate a distributed load is shown to have a number of deficiencies, both theoretically and in its practical results. A new method which utilizes Lagrange multipliers is derived and applied to an aerodynamic pressure distribution with improved results. The concept of weighting functions is introduced as a means of comparing the different methods in absolute terms. Weighting functions are also used to assess the effect of removing a load actuator from the standard configuration. (AN)

Descriptors :   *AERODYNAMIC LOADING, *JET FIGHTERS, *FATIGUE TESTS(MECHANICS), *TAILS(AIRCRAFT), MATHEMATICAL MODELS, COMPARISON, WEIGHTING FUNCTIONS, SHEAR STRESSES, LEAST SQUARES METHOD, DEFICIENCIES, AERODYNAMIC FORCES, AUSTRALIA, WING BODY CONFIGURATIONS, PRESSURE DISTRIBUTION, TORQUE, LAGRANGIAN FUNCTIONS, AERIAL RUDDERS, TRAILING EDGES, BENDING MOMENTS.

Subject Categories : Aerodynamics
      Attack and Fighter Aircraft
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE