Multi-section helicopter-borne rotatable beam, specially adapted

Details Multi-section helicopter-borne rotatable beam, specially adapted Multi-section helicopter-borne rotatable beam, specially adapted

1991-09-06

1993-03-02

Gellner, Michael L.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

354293, 2441181, 2441374, G03B 2900

Patent

active

051913704

ABSTRACT:
A multi-section helicopter-borne rotatable beam for supporting at either of its ends range-finder cameras and television focusing cameras for stereophotogrammetric surveys, in which the central tubular section is rotated by means of an electric motor and return springs and supported by two collars mounted rotatably by means of hinged constraints on a base fixed rigidly to the floor of the helicopter cab and the two truncated-cone tubular-structure side sections of the beam are secured to the central section by a telescopic coupling arrangement ensured by half-ring ties co-operating with flanges of the sections and by through pins and safety split pins, the above-mentioned cameras being supported by prismatic box frames in their turn supported, by means of a dampening system comprising springs and double-acting shock absorbers, inside housings or pods with a ventral opening, which can be closed with an internally-sliding door, and a plexiglass portable. Variants are also envisaged.

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