Assessment of Load Alleviation Devices Installed on a Power-Augmented-Ram Wing over Irregular Waves.
Abstract
An investigation was conducted on Carriage III at the David W. Taylor Naval Ship Research and Development Center to determine the motions and performance of a power-augmented, wing-in-ground-effect model with load alleviation devices. The effects of soft and bumpered endplates and a flexible flap were investigated for a range of velocities, thrust-to-weight ratios, and irregular wave sea states. Results show that the flexible flap can provide a smoother, softer ride for a thrust-to-weight ratio of 0.20, but at the expense of decreased average heave and increased average drag. Results also indicate a transport efficiency degradation from 23.18 to 10.06 with increase in sea state from 0 to 5 for the model without load alleviation. The results are inconclusive for the soft and bumpered endplates. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1977
- Accession Number
- ADA045425
Entities
People
- David W Taylor
- Earl F. Mccabe Jr.