Aeronautics and astronautics – Landing gear – Retractable
Patent
1985-09-30
1988-01-19
Peters, Jr., Joseph F.
Aeronautics and astronautics
Landing gear
Retractable
B64C 2510
Patent
active
047200634
ABSTRACT:
A hydraulic control cylinder (64) is used to swing the upper part (14) of a two part wheel strut (14, 16) about an axis of rotation (18) established at the upper end of the upper strut part (14) and at an upper central location within a stowage compartment (10). A folding drag brace assembly (102) is connected between the strut (16) and a lower rear portion of the stowage compartment (10). During use of the control cylinder (64) for swinging the upper strut part (14) rearwardly and upwardly, the drag brace (102) folds automatically in the manner of a pantographic device, and functions to fold the lower strut part (16) up against the upper strut part (14) within the stowage compartment (10). A mechanism is provided for rotating the wheel assembly (30) W, relative to the lower strut part (16), for the purpose of properly positioning the wheel assembly (30) W for movement into the stowage compartment (10). The invention makes it possible to retract the landing gear assembly (12) into a stowage compartment (10) which is considerably shorter than the in use length of the landing gear strut (14, 16) without the need for a second "down lock" member.
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James Milton E.
Stepien John A.
Barnard Delbert J.
Fiorito Lynn M.
Peters Jr. Joseph F.
The Boeing Company
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