THE ACCELERATION OF AN AIR CUSHION VEHICLE UNDER THE ACTION OF A PROPULSOR

This paper presents the solution for the motion of an air-cushion vehicle (ACV) starting from rest under the action of a propulsor of given thrust-speed characteristics. The wave resistance is based on linearized potential theory, while the aerodynamic drag components are assumed to be strictly quasi-steady. The problem is treated in two different ways: calculating the wave resistance in a truly unsteady manner, and on the simplified quasi-steady basis. The results show that the shape of the propeller characteristics has only a minor effect on the velocity pattern. However, the effect of overloading the ACV is shown to have crucial effects on its ability to surpass the critical depth hump. In this respect, the simpler quasi-steady calculations lead to unnecessarily pessimistic estimates of the acceleration margin. Under certain circumstances in relatively shallow water, the quasi-steady analysis would suggest that the ACV could not overcome the critical hump, while the more elaborate unsteady calculations show that it has indeed adequate power to reach its final cruising speed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Doctors, L J
  • Sharma, S D
• Publication Date: 1973-6

Media Info

• Features: References;
• Pagination: p. 121-128
• Serial:
  • Journal of Ship Research
  • Volume: 17
  • Issue Number: 2
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0022-4502
  • EISSN: 1542-0604
  • Serial URL: https://onepetro.org/jsr

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Air cushion vehicles; Hump yards; Intelligent transportation systems; Navigation; Tracked air cushion vehicles; Wave resistance
• Old TRIS Terms: Advanced systems; Hump resistance; Shallow water effects
• Subject Areas: Marine Transportation; Operations and Traffic Management; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00051218
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Mar 18 1974 12:00AM