TECHNICAL DESCRIPTION, OPERATING, MAINTENANCE AND REPAIR MANUAL
actuated via the handle on the pedestal between the pilot seats. This handle actuates
the parking brake too. Systems are actuated via the handle on the pedestal between the
pilot seats. The nose wheel leg consists of the steel tube and the carbon fork, where is
located nose wheel with diameter 300 mm. The nose wheel leg is supported on
bearings ( upper and down ) and is controlled by means of the rods connected to the
rudder pedals. The springing is carried out with rubber rope and with the flexible
element, which is located in the upper nose wheel bearing. The nose wheel is covered
with laminated fairing.
1.6.6.2 Retractable undercarriage
Main undercarriage ( Fig.2) consists of the welded steel leg ( B ), the arm ( R) with the
wheel and the flexible element ( FB ) . The main leg is fixed into the fitting of the
wing central panel main spar in front, and into the fitting of the auxiliary girder in rear.
The wheel is equipped with disc brake ( SB ). The retraction of the undercarriage is
carried out with help of the hydraulic face rams inside to the symmetry plane of the
aeroplane. The pistons of the hydraulic face rams are connected with the drag stay,
which is equipped with the spiral spring ( F ) . This spring pushes the drag stay during
of the undercarriage extension into the arrested position. The emergency extension of
the undercarriage is carried out by own mass with the help a three-way valve. The drag
stay is arrested with help of the springs.
Fig. 2 Main leg of the retractable undercarriage
Date:
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