T-45A UJPT, E2-C2, ADV, & IUT Eng-26
Engineering Review
(1) Steering motor: hydraulic motor
mechanically moves nose wheel
(2) Gearbox (gear train):
mechanically transmits steering
motor movement to nose wheel
(3) Electronic control box powered by
the 28 VDC essential services bus
(4) Steering collar: support bearing
between fixed strut and moveable
nose wheel
b.
Controls and indicators
(1) NWS button
(a) Selects high gain
(+/- 65 degrees) when
pressed and held
(b) Reselects low gain
(+/- 12 degrees) when
pressed momentarily after
emergency off with paddle
switch or NWS shutdown due
to fault protection
(c) Selects +/- 20 degrees NWS
when pressed and held with
launch bar down
(2) Paddle switch: selects NWS
emergency off (ground) and deac-
tivates control augmentation
(ground/airborne)
(3) NOSE WHL STR caution light
indicates system failure or nose
wheel steering disconnected with
the paddle switch
Page 26-41
(8-03) Original
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