Aeronautics and astronautics – Landing field arrangement
Patent
1986-03-03
1987-06-02
Barefoot, Galen
Aeronautics and astronautics
Landing field arrangement
244110E, 256 1, 182 19, 182113, 114258, B64F 136, E04G 500
Patent
active
046696830
ABSTRACT:
A pivotable safety railing for a platform such as a helicopter landing pad is disclosed. The safety railing includes a suitable hand railing of sufficient height to protect a person on the landing pad, and mounted on a pivot shaft extending along an edge of the platform. The pivot shaft allows the railing to pivot downwardly to a horizontal position while a helicopter is landing or taking off, and to pivot upwardly to an upright, or vertical, position, when a helicopter is resting on the landing pad. The pivot shaft is driven by a suitable electric motor which is controlled by sensors located on the landing pad, the sensors causing the pivot shaft to be driven in a direction to move the railing to its horizontal position whenever there is no helicopter present on the pad, and causing the shaft to be driven in a direction to raise the railing to its vertical position whenever a helicopter has landed. The railing preferably is located adjacent a stairway leading to the platform, to provide a handrail for passengers entering or leaving the landing area, but, if desired, may be provided along other areas of the landing pad, as required for safety purposes.
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