PERFORMANCE ESTIMATES OF CAPTURED AIR BUBBLE VEHICLES WITH WATER JET PROPULSION
Performance predictions of captured air bubble ( CAB ) vehicles utilizing water jet propulsion are presented. The analysis was made for various combinations of gross weight, specific loading, length-to-beam ratio, and wave height. In addition, the effect of varying the ducting loss coefficient was also investigated. It was found that the total drag hump of low length-to-beam ratios ( L/B ) was eliminated at higher L/B values. This effect is due to the complex behavior of the wavemaking drag component. It was further found that for a particular length-to-beam ratio ( L/B ), a value of specific cushion loading existed which optimized the performance ( as measured by the ratio of weight to horsepower required ). The lighter specific cushion loadings offered definite performance advantages at the lower length-to-beam ratios. ( Author )
University of California, BerkeleyBerkeley, CA USA 94720
- Williams, Robert M
- Publication Date: 1967-2
- Pagination: 125 p.
- TRT Terms: Hump yards; Waterjet propelled craft
- Old TRIS Terms: Drag hump; Waterjet propulsion
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00001963
- Record Type: Publication
- Source Agency: Defense Documentation Center
- Report/Paper Numbers: AERO-1119 R & D Rpt.
- Files: TRIS
- Created Date: Oct 30 1972 12:00AM