Aeronautics and astronautics – Landing gear
Patent
1984-11-02
1987-02-24
Barefoot, Galen
Aeronautics and astronautics
Landing gear
244108, 244109, 244 1717, 267 22R, B64C 2558
Patent
active
046451439
ABSTRACT:
The flexible girder made of composite materials and with high energy absorption is in the form of an elongate box of laminated structure comprising two rigid flanges (6,7) connected by two webs (9) which have aligned apertures (13). A deformable energy-absorbing block (14') is arranged between the two flanges (6,7) at the apertures and comprises a block of an elastomeric material (15). The block (14') absorbs the buckling deformation energy of the flange (6) which is subjected to compressive stress during flexion of the girder, by resting on the other flange (7) which is subjected to tensile stress. The block (14') controls the buckling of the flange (6) and only gives back part of the energy absorbed. Application to the equipment in particular of skid landing gear for helicopters and tail skids for aircraft.
REFERENCES:
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patent: 2534722 (1950-12-01), Muklejohn, Jr. et al.
patent: 2636743 (1953-04-01), Frazier
patent: 2641423 (1953-06-01), Harriman et al.
patent: 2767977 (1956-10-01), Paton
patent: 2831688 (1958-04-01), Knox
patent: 3193221 (1965-07-01), Victorian et al.
patent: 3238690 (1966-03-01), Wilkins
Aerospatiale - Societe Nationale Industrielle
Barefoot Galen
Corl Rodney
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