Hydrodynamic Forces on CAB Flaps During Large Amplitude Non-uniform Motion
The report presents an analtyical method for computing the hydrodynamic forces and moments on the fore and aft seals or flaps of a CAB vehicle. The equations presented are suitable for use in computer simulation studies. Both linear and nonlinear representations are presented and these are given both as a function of frequency for harmonic motions and as a function of time for transient motion. Large amplitude motions are treated in the nonlinear representation and the presence of discontinuous response (e.g. the flap lifting clear of the water and impacting on its return entry) are also discussed. (Author).
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added mass aft seals AMPLITUDE NON-UNIFORM MOTION angle of attack aspect ratio Attn CAB FLAPS CAB vehicle Code computing the hydrodynamic Cornell Aeronautical Laboratory Development Center discontinuous response e.g. e.g. the flap F and G finite span flap chord flap lifting clear flap trailing edge FLAPS DURING LARGE forces and moments FORCES ON CAB fore and aft frequency for harmonic function of frequency harmonic motions Howard County hydrodynamic forces Hydrofoil HYDRONAUTICS Incorporated Technical Report Large amplitude motions LARGE AMPLITUDE NON-UNIFORM Library 1 Commander lift force linear and nonlinear linear representation midchord motions are treated Naval Architecture Naval Ship Research Naval Shipyard Navy Washington nonlinear representation presence of discontinuous presented are suitable Prof radius of gyration return entry seals or flaps Security Classification semiperimeter Sparrow Point SPONSORING MILITARY Surface Effect Ship Technical Library Technical Report 711-2 trailing edge Equation transient motion unsteady vortex wake water and impacting water surface