Aircraft arrestment system

Details Aircraft arrestment system Aircraft arrestment system

1982-02-16

1983-07-19

Barefoot, Galen L.

Aeronautics and astronautics

Retarding and restraining devices

Friction brakes

B64F 102

Patent

active

043939961

ABSTRACT:
A system is provided to alleviate high initial tensile load in a cable subjected to sudden impact such as airplane arrestment during landing on an aircraft carrier. A series of pulleys or other supporting structure is arranged to impart a curved shape to a cable stretched thereacross. One or more of the pulleys are spaced along opposing sides of the cable impact point so that one side is a mirror image of the other. The pulleys are positioned to change the cable angular direction by an amount less than that which would cause a total reflection of the transverse wave formed in the cable on impact. In this manner, the wave is partially reflected at each pulley/cable contact point. This action generates a corresponding number of small tensile load increases and spreads them out over a relatively long time period thereby alleviating the initial aircraft impact force.

REFERENCES:
patent: 2919871 (1960-01-01), Sorensen
patent: 3114522 (1963-12-01), Mortimer
patent: 3717326 (1973-02-01), Leach et al.
patent: 3876170 (1975-04-01), Whittingham

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