T-45C TS, ADV & IUT ENG-17
OBOGS & ECS/Pressurization System
A.
Air conditioning system--major components
1.
Main pressure regulating and shutoff valve
(MPRSOV): located top of fuselage, aft of canopy
Overlay 1
2.
Primary heat exchanger: located top of fuselage, aft
Primary Heat
of canopy
Exchanger
Overlay 2
3.
Inducer pressure regulating and shutoff valve
IPRSOV
(IPRSOV): located top of fuselage, aft of canopy
Overlay 3
4.
Cold air unit (CAU): located top of fuselage, aft of
CAU
canopy, consists of two primary components--
compressor and turbine
Overlay 4
Secondary Heat
Exchanger
5.
Secondary heat exchanger: located top of fuselage,
aft of canopy
Overlay 5
Temperature Control
Valve
6.
Temperature control valve: located top of fuselage,
aft of canopy
Overlay 6
Water Extractor
7.
Water extractor: located top of fuselage, aft of
canopy
Overlay 7
Crew Ventilation Ducts
8.
Crew ventilation ducts: located under left and right
Overlay 8
canopy rails
Defog Ducts
9.
Defog ducts: located at left and right base of the
Overlay 9
Ram Air Intake Valves
windshield and canopy
Overlay 10
10. Ram air intake valves: located on top of nose cone
Ram Air Outlet Valves
11. Ram air outlet valves: located on the cockpit
forward and aft bulkheads
Sg 4, fr 14
(2 overlays)
Cockpit Pressurization
B.
Cockpit pressurization system--major components
System - Simplified
1.
Pressure control valve: located on fwd cockpit bulk-
head behind instrument panel
2.
Discharge valves (2): one collocated with the
pressure control valve, the other aft cockpit on
bulkhead behind seat
Original (9-98)
Page 17-13
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