LATERAL STABILITY OF A DYNAMIC RAM AIR CUSHION VEHICLE
The lateral stability derivatives of a dynamic ram air cushion vehicle in a rectangular guideway were measured using a ship model towing tank. Lift and pitching moment are also reported. The primary lateral derivatives are all stabilizing, with significant cross coupling in some cases. The longitudinal forces are compared with the numerical prediction of the one-dimensional mass conservation theory given by Boccadoro, with good agreement. A trailing edge Trefftz analysis is presented and used to predict the lateral derivatives. Comparison with the lateral data is good for side displacement derivatives but is less successful for yaw angle derivatives. The towing tank is found to be an effective method for testing dynamic air cushion vehicles.
- Prepared by Massachusetts Inst. of Tech., Cambridge. Aerophysics Lab.
Transportation Systems Center55 Broadway, Kendall Square
Cambridge, MA United States 02142
Washington, DC United States 20590
Massachusetts Institute of TechnologyAerophysics Laboratory
Cambridge, MA United States 02139
- Aidala, P V
- Publication Date: 1974-8
- Pagination: 72 p.
- TRT Terms: Aerodynamics; Air cushion vehicles; Dynamics; Guideways; Mathematical models; Random access memory; Soil stabilization; Stability (Mechanics); Tracked air cushion vehicles
- Uncontrolled Terms: Models; Stabilization
- Old TRIS Terms: Lateral movement
- Subject Areas: Geotechnology; Highways; Railroads; Safety and Human Factors; Terminals and Facilities;
- Accession Number: 00081184
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: DOT-TSC-FRA-74-6 Final Rpt.
- Contract Numbers: DOT-TSC-239
- Files: NTIS, TRIS, USDOT
- Created Date: Mar 6 1975 12:00AM