Evaluation of a Power-Augmented-Ram Wing Operating Free in Heave and Pitch over Water
Final rept. Oct 1976-Aug 1977
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD AVIATION AND SURFACE EFFECTS DEPT
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An investigation was conducted at the David W. Taylor Naval Ship Research and Development Center Carriage III Facility to determine performance characteristics of a power-augmented-ram wing-in-ground-effect vehicle. The model was the first statically stable vehicle to be operated free in heave and pitch with excess thrust. The power-augmented-ram vehicle successfully accomplished a static takeoff at the extremely low thrust-to-weight ratio of 0. 173. The model was able to accelerate through hump at a vehicle density of 2 lb cu ft 32 kgcu m this is a higher density than in any previous test. Trimming moments were supplied by one of several aerodynamichydrodynamic control surfaces. The best performance was obtained using a large 40-deg deadrise, V shaped, planing tail.
- Surface Effect Vehicles and Amphibious Vehicles