Abstract: The air cushion field’s pressured rectangular pad with multiple supply holes are analyzed theoretically by use of complex potential theory and slit flow theory. An appropriate potential function, which satisfies the boundary condition is found by using arrays of infinite sources and sinks. Then calculation formulas of this air cushion field’s pressure distribution with any evenly distributed air-supply holes are derived. A calculating program is worked out and theories mentioned are proved to be correct by tests.

Key words: Air cushion field’s pressure, Air-supply holes, Complex potential function, Load capacity flow