Nose Wheel Steering

Description

• A hydraulic actuating cylinder steers the nose wheel.
  • The yellow hydraulic system supplies pressure to the cylinder, and electric signals from the Brake and Steering Control Unit (BSCU) control it.
• The steering system receives actuating hydraulic pressure when:
  • A/SKID & N/W STRG switch is ON
  • Towing control lever is in normal position
  • At least one engine is running
  • Aircraft is on ground.
• The handwheel can turn the nosewheel up to 75 ° in either direction.
• A lever, on the towing electrical box (on nose landing gear), enables ground crew to deactivate the steering system for towing.
  • Then the wheel can be turned 95 ° in either direction.
• An internal cam mechanism returns the nose wheel to the centered position after takeoff.