Calculation of the static forces acting on ACV bagfinger skirts
Abstract
A mathematical model of the geometry formation of an ACV bagfinger skirt is developed to determine skirt shape and its deflection for varying cushion pressures, and calculations for the reactions of supports of the rigid structure on the skirt at the inner and outer attachment points are obtained. The model assumption that the finger triangle of the twodimensional bagfinger skirt turns around the inner attachment point with changing ratio of cushion pressure to bag pressure is confirmed by experiments using skirt rigs. Good agreement is found between theoretical and experimental results, and it is shown that when the cushion pressure is changing, the pressure ratio is the essential dimensionless parameter for the skirt geometry formation and its deflection, and for the forces acting on it.
 Publication:

1985 Joint International Conference on Air Cushion Technology
 Pub Date:
 1985
 Bibcode:
 1985act..conf...16X
 Keywords:

 Ground Effect Machines;
 Skirts;
 Aerodynamic Forces;
 Frequency Response;
 Mathematical Models;
 Engineering (General)