Hovercraft and process of regulating air cushion
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 12, 1997
Grant Date -
N/A
app pub date -
Jul 19, 1995
filing date -
Feb 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The surface effect vehicle comprises a plurality of lift fans for generating an air cushion, each of the fans having a drive with a motor and a regulating circuit with sensors and actuators for acting on the air cushion, each of the drives having an associated regulating circuit, the drive of the first one of the lift fans being operated as a master drive, while a rest of the lift fans being operated as follower drives. The process for regulating an air cushion in a surface effect vehicle with a plurality of lift fans whose drives have regulators and motors operated at a determined speed for generating an air cushion of a determined pressure or height and deliver corresponding output, a behavior of the lift fans conforming to a determined characteristic curve, the process comprises the steps of regulating every lift fan in such a way that one regulator serves as a master regulator which is followed by the rest of the regulators, so that the master regulator regulates a pressure or a height of the air cushion while the follower regulators regulate an output or a speed, where the output and volume flow or the speed of the master fan is used as a guidance variable.
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