T-45C TS, ADV & IUT ENG-13
Flight Control System
b.
Should HYD 1 fail, backup power for flaps
extension only is provided by the wheel brake/
emergency flap accumulator
NOTE: Slats are hydraulic and function in
Sg 4, fr 4
consonance with the flaps actuation when HYD
Fig 18: Slat System
1 system pressure is available. No emergency
Components
slat extension.
2.
Electrical: 28 VDC essential services bus powers
both normal and emergency flap operation
B.
Speed brakes 1.4.1.9.2
Sg 4, fr 5
Fig 19: Speed Brake
System Components
1.
Hydraulic
a.
Powered by HYD 1 system only
b.
No redundant or emergency backup system
2.
Electrical: 28 VDC essential services bus powers
speed brake selection
C.
Hydraulic system
Sg 4, fr 6
Fig 20: Hydraulic
1.
Ailerons and stabilator are tandem actuator design--
System Block Diagram
failure of either hydraulic system does not affect
operation
2.
Flaps interface with HYD 1 only--wheel brake/
emergency flap accumulator provides backup power
in event of failure
3.
Slats interface with HYD 1 only--there is no backup
power in the event of failure
4.
Speed brake system has no redundancy
Page 13-38
(9-98) Original
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