Accession Number:

ADA045428

Title:

Evaluation of a Power-Augmented-Ram Wing Operating Free in Heave and Pitch over Water

Descriptive Note:

Final rept. Oct 1976-Aug 1977

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD AVIATION AND SURFACE EFFECTS DEPT

Personal Author(s):

Report Date:

1977-08-01

Pagination or Media Count:

78.0

Abstract:

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.

Subject Categories:

  • Surface Effect Vehicles and Amphibious Vehicles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE