Accession Number : ADP005050

Title :   Static Aeroelastic Effects on High-Performance Aircraft,

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

Personal Author(s) : Schneider,G. ; Zimmermann,H.

Report Date : JAN 1986

Pagination or Media Count : 15

Abstract : It is important to begin aeroelastic design studies in the preliminary design phase. Structural optimization programs are very helpful in analysing and solving aeroelastic problems on aircraft components. Using fiber composites, a new design technique called 'aeroelastic tailoring' provides new capabilities in fullfilling stiffness requirements for aerodynamic surfaces. Benefits of aeroelastic tailoring are shown on a fighter fin design. Design of advanced digital flight control systems needs a good knowledge of the elastic aircraft behavior such as elastic derivatives and control surface effectiveness. Structural computer models of a total aircraft can be built up according to the actual development phase, without loosing transparency because of the complexity of large finite element models. Test-to-analysis comparisons are necessary in aerodynamics, structures and structural dynamics to up-date computer models and to find out shortcomings of analyses.

Descriptors :   *AEROELASTICITY, FIGHTER AIRCRAFT, COMPUTER AIDED DESIGN, STRUCTURAL ANALYSIS, AERONAUTICAL ENGINEERING, FLIGHT CONTROL SYSTEMS, DYNAMIC RESPONSE, OPTIMIZATION, FIBER REINFORCED COMPOSITES, COMPOSITE STRUCTURES, FINS, AERODYNAMIC CONTROL SURFACES, STIFFNESS, FLUTTER, MODEL TESTS, WEST GERMANY

Distribution Statement : APPROVED FOR PUBLIC RELEASE