Yes. Body gear steering assist nose steering during taxi and towing reducing stress and tire scrubbing.
When the system is armed, the body gear trucks are out of tilted position and the nose steering goes beyond 20 degrees hydraulic fluid is ported to the body gear steering actuators. (Closed loop system)
Full deflection, 13 degrees for the inboard truck and 11 degrees for the outboard (inboard/outboard of the turn) occurs when nose wheel is steered 70 degrees.
mentioned the system is installed on the classics as well.
Arming switch on the classics is in the overhead panel. It's manually disarmed right after lining up for take off and armed during landing roll once the aeroplane reaches taxi speed. It's automatic on the -400.
Steering actuator position sensors will activate the take off configuration warning horn if thrust lever #3 is advanced with body gear steering actuators not locked & centered.
|Quoting lowrider (Reply 9):|
I also think the body gear steering actuation was based on tiller angle, not nose gear angle.
Correct. Signals to the body gear steering are cable driven from the tiller.
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