T-45C TS, ADV & IUT ENG-11
Hydraulic Subsystems
4.
Limitations
a.
During acceleration at aircraft ground speeds
less than 30 knots, the system is not active, and
only manual braking is available
b.
During deceleration, anti-skid is not operational
below 10-13 knots ground speed to allow for
directional braking during aircraft taxi
c.
If anti-skid dumps all pressure for more than 2
seconds or no wheel spin up detected for 3
seconds after touchdown, anti-skid system
shuts down and SKID caution light comes on--
after 1 second delay, system reverts to manual
braking
NOTE: Anti-skid may be reset by cycling ANTI-
SKID switch in either cockpit.
PROGRESS CHECK
Question 2 — 1.4.10.2.1
What should the BRAKE pressure gauge indicate when the
wheel brake/emergency flap accumulator is functioning
normally and HYD 1 is operating?
ANSWER: 3000 psi
5.
Summary:
The brakes/anti-skid system is designed to provide
maximum effective braking power on all runway
surfaces. When engaged, the anti-skid system
regulates brake pressure. Speed sensors
continuously monitor the rate at which the wheels
are spinning down. If one wheel is spinning down
more rapidly than the other (skid starting), the anti-
skid system acts by dumping pressure to both wheel
brakes until both wheels are again spinning at the
same rate.
(9-98) Original
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