A preliminary study was conducted on the design of the wing-box structure for a civil tiltrotor transport aircraft. The wing structural weight is to be minimized subject to structural and aeroelastic constraints. The composite wing-box structure is composed of skin, stringers, ribs, and spars. The design variables include skin ply thicknesses and orientations and spar cap and stringer cross-sectional areas. With the total task defined, an initial study was conducted to learn more about the intricate dynamic and aeroelastic characteristics of the tiltrotor aircraft and their roles in the wing design. Also, some work was done on the wing finite-element modeling (via PATRAN) which would be used in structural analysis and optimization. Initial studies indicate that in order to limit the wing/rotor aeroelastic and dynamic interactions in the preliminary design, the cruise speed, rotor system, and wing geometric attributes must all be held fixed.
Wing Design for a Civil Tiltrotor Transport Aircraft: A Preliminary Study
1993
2 pages
Report
No indication
English
Aircraft , Aerodynamics , Aeroelasticity , Aircraft design , Composite structures , Tilt rotor aircraft , Transport aircraft , Wings , Dynamic characteristics , Structural analysis , Structural members , Structural weight , Computer programs , Design analysis , Finite element method , Ribs (Supports) , Rotors , Stringers
Wing design for a civil tiltrotor transport aircraft
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