The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 1984
Filed:
Jul. 17, 1981
Edward G Tattersall, Southampton, GB;
Jack Ruler, Maidstone, GB;
Vosper Hovermarine Limited, both of, GB;
Marconi Avionics Limited, both of, GB;
Abstract
A marine vehicle, which may comprise a sidewall gas-cushion vehicle, is provided with a pair of steering rudders, a sensor for detecting incipient undesirable motions of the vehicle, and an electrical, mechanical, and/or hydraulic system, or a hybrid thereof, for operating the rudders so as to apply restoring forces to the vehicle. The steering rudders are mounted beneath the vehicle and on opposite sides of the longitudinal axis thereof, being disposed in planes which are inclined to the vertical and which intersect above the rudders. The sensor for detecting incipient undesirable motions of the vehicle may comprise an angular rate and/or an accelerometer. The signal output of the sensor is applied to a band pass filter of pre-determined transfer function and the filtered sensing signal is applied to a summing point, to which is also applied a steering command signal.