T-45A UJPT, E2-C2, ADV, & IUT Eng-26
Engineering Review
(6) Parking brake: mechanically
operates brake control valve to
apply hydraulic pressure simulta-
neously to both wheel brake units
to park aircraft
(7) Anti-skid control unit: "brains" of
anti-skid system; controls opera-
tion of anti-skid valve
(8) Speed sensors: measure rotation
speed of each wheel; resulting
signal sent to anti-skid control box
and used to predict when a wheel
is about to skid
(9) Wheel brake/emergency flap
accumulator: provides smooth,
even brake response with HYD 1
operational; provides 10 full brake
applications in the event of HYD 1
failure with anti-skid off
b.
Controls and indicators
(1) Brake pedals
(2) BRAKE pressure gauge and wheel
brake/emergency flap accumulator
pressure gauge indicate pressure
in wheel brake/emergency flap
accumulator
(3) PARKING BRAKE caution light:
illuminates when parking brake is
engaged and throttle is past
70% rpm position
(4) PARKING BRAKE handle
(5) ANTI-SKID switch
(8-03) Original
Page 26-37
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