Aeronautics and astronautics – Aircraft structure – Details
Patent
1995-10-02
1997-12-02
Kashnikow, Andres
Aeronautics and astronautics
Aircraft structure
Details
244100A, 244106, 114292, 114345, B64C 0124, B64C 2556, B63B 0708
Patent
active
056927061
ABSTRACT:
An improved step reinforcement system is disclosed for use in inflatable or pneumatic aircraft floats such as are employed in waterborne and amphibious aircraft. The float itself comprises a continuous tubular shell having spaced apart upper and lower walls interconnected by spaced apart first and second side walls to define an interior space within the float. The lower wall further includes a step extending continuously and transversely between vertically spaced fore and aft portions thereof. According to the improvement of the present invention, at least one inflatable bladder is disposed within the interior space of the float so as to be adjacent to the step and abut at least the lower wall of the float. The bladder has an internal pressure sufficiently greater than the internal pressure of the float so as to reinforce the step. An elongate stiffening element abuts the fore portion of the lower wall of the float forward from the step. Further disclosed is a method for selectively reducing or increasing the distance required for takeoff of the aircraft, the method comprising the step of selectively increasing or decreasing the internal pressure of the at least one inflatable bladder.
REFERENCES:
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patent: 4019698 (1977-04-01), Earl
patent: 4697762 (1987-10-01), Arney
Arney Donald B.
Brooke Peter L.
Kashnikow Andres
Mojica Virna
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