An operator for lowering and retracting two or more landing gear on an aircraft with a single motor. The output of the motor is modified by a reduction gear assembly, then rotates a drive shaft of each drive, there being one drive for each landing gear assembly. Output of each drive shaft turns a un
An operator for lowering and retracting two or more landing gear on an aircraft with a single motor. The output of the motor is modified by a reduction gear assembly, then rotates a drive shaft of each drive, there being one drive for each landing gear assembly. Output of each drive shaft turns a universal joint, then a screw shaft fixed to the universal joint. The screw shaft is arranged to turn in a threaded collar fixed to a tubular stabilizing strut connected to the main strut of the landing gear such that rotation telescopically extends and contracts the paired strut and screw shaft when the latter rotates. Two opposing landing gear are driven by mirror image drives of the operator. Optionally, a third drive shaft and screw shaft lower and retract the nose wheel or tail wheel of the aircraft.
대표청구항▼
[ I claim:] [1.] An aircraft having retractable landing gear, comprising:a fuselage, a first wing, a second wing, and a structurally strong portion;landing gear comprising a first wheel assembly having a first weight supporting strut pivotally fixed to said structurally strong portion of said aircra
[ I claim:] [1.] An aircraft having retractable landing gear, comprising:a fuselage, a first wing, a second wing, and a structurally strong portion;landing gear comprising a first wheel assembly having a first weight supporting strut pivotally fixed to said structurally strong portion of said aircraft and a first wheel fixed to said first weight supporting strut, and second wheel assembly having a second weight supporting strut pivotally fixed to said structurally strong portion of the aircraft and a second wheel fixed to said second weight supporting strut; andan operator disposed to selectively lower said first wheel assembly laterally and in an arcuate path from one of said first and second wings into a deployed condition and said second wheel assembly laterally and in an arcuate path from the other of said first and second wings into a deployed condition and to laterally retract said first wheel assembly against and parallel to said one wing into a stowed condition and laterally to retract said second wheel assembly against and parallel to said other wing into a stowed condition, comprising:a motor disposed within said fuselage,a first drive shaft disposed transversely within said fuselage, drivingly connected to said motor, and disposed to provide rotating motion, said first drive shaft having a proximal end and a distal end, a first rigid screw shaft and a first universal joint longitudinally flexibly securing said first screw shaft to said distal end of said first drive shaft, a first elongated, rigid member having a proximal end and a distal end, said first elongated, rigid member disposed to engage said first weight supporting strut, said proximal end of said first rigid member having a first threaded collar disposed to receive said first screw shaft, said first rigid member and said first screw shaft disposed to expand and contract telescopically and parallel to one another and to push said first weight supporting strut into said deployed condition and to pull said first weight supporting strut into said stowed condition when said motor drives said first screw shaft, anda second drive shaft disposed transversely within said fuselage, drivingly connected to said motor, and disposed to provide rotating motion, said second drive shaft having a proximal end and a distal end, a second rigid screw shaft and a second universal joint flexibly securing said second screw shaft to said distal end of said second drive shaft, a second elongated, rigid member having a proximal end and a distal end, said second elongated, rigid member disposed to engage said second weight supporting strut, said proximal end of said second rigid member having a second threaded collar disposed to receive said second screw shaft, said second rigid member and said second screw shaft disposed to expand and contract telescopically and parallel to one another and to push said second weight supporting strut into said deployed condition and to pull said second weight supporting strut into said stowed condition when said motor drives said second screw shaft.
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이 특허를 인용한 특허 (13)
Cox, Isaiah Watas; Carman, Jr., Robert Lincoln, Aircraft drive.
Thompson, Robert I.; White, Nicholas J., Nose landing gear arrangement with a collapsible support structure designed to minimize the stowed volume of the landing gear.
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