FIELD: transport.
SUBSTANCE: invention relates to aircraft undercarriage retractable NLG, particularly to three-wheel undercarriage. NLG comprises nacelle, leg and extension mechanism. In the case of tail-first configuration, NLG hinge makes the sleeve fitted on front horizontal fin axle. Undercarriage can have nacelle solely for NLG wheel. Note here that NLG is arranged inside the fuselage recess between NLG hinge and wheel nacelle. Besides, NLG can be arranged outside the fuselage, nearby it between NLG hinge and wheel nacelle. Every hinged flap of the wheel nacelle is articulated with the lever arranged said nacelle to contact with said wheel. Besides, every said articulated flap can be engaged with the lever fitted on the same hinge and engaged with said flap by contracting spring while stroke limiter is arranged between said flap and lever.
EFFECT: decreased weight, higher reliability of leg retraction.
15 cl, 4 dwg
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