T-45A UJPT, E2-C2, ADV, & IUT Eng-26
Engineering Review
(3) DEFOG
(a) Directs 40% of airflow to body
sprays (eyeball diffusers)
(b) Directs 60% of airflow to
canopy/windscreen ducts
(4) MAX DEFOG: provides additional
hot air to all airflows
4.
Avionics cooling system
a.
Receives conditioned air from cockpit
air supply
b.
Distributes air to fwd and aft avionics
bays
c.
AVIONICS HOT caution light
illuminates only when on the ground
and air temperature in the avionics
cooling duct exceeds 67 degrees C
(153 +/- 5 degrees F)
VIII. Flight instruments
Sg 8, fr 1
Lesson Organization
A.
SAHRS/NGS: provides all attitude and heading
information to attitude director indicator (ADI),
HSI, HUD, and ADR
1.
Strapdown sensor assembly (SSA):
generates pitch, roll, and stabilized heading
signals for SAHRS/NGS
2.
Remote compass transmitter (magnetic flux
valve/induction compass transmitter):
senses direction of earth's magnetic field
and sends signal to SAHRS/NGS to provide
stable heading information to the HSI, ADI,
and HUD
Page 26-68
(8-03) Original
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