MIL-HDBK 1028/6A
2.3.1
System Components. A schematic diagram of the starting air
system is shown in Figure 3. The basic components of the system are:
a)
Electric motor-driven, reciprocating-type air compressors,
b)
Air dryers,
c)
Compressor cooling system,
d)
Compressor and compressed air system controls,
e)
Receiver storage tanks,
f)
Underground distribution system, and
g)
Aircraft hangar and parking apron service point facilities.
2.3.2
Design Requirements. A broad range of starting air
requirements exists because of differences in aircraft types and
functions of the squadron or group. The starting air system shall have a
minimum compressor size and receiver tank storage capacity to supply air
for the starting (in 2 minutes) 12 of a full complement of 36 two-engine
aircraft with a 2-hour recovery period. Section 3 relates this criteria
requirement to designs for less than a full complement of aircraft.
2.3.3
Design Conditions. The equipment ratings shall be based on
standard ambient conditions of 14.67 psia (101.13 kPa) atmospheric pressure
and 70 degrees F (21 degrees C) dry bulb temperature. The system shall be
designed to supply air at the parking apron service island in the quantity
required measured at 45 psig (310.23 kPa) or
75 psig (517.05 kPa).
2.4
Environmental Control System. The function of the ECS is to
provide compressed air for aircraft engine starting, ECS compressed air,
and pneumatic tool operation at parking apron service islands and
maintenance hangar service points. The ECS uses compressed air to operate
the aircraft air cycle refrigeration machine which provides cockpit and
cabin pressurization comfort conditioning, avionics and radar cooling, and
other heating and cooling tasks. The system design shall comply with
piping and installation standards specified in NAVFAC
DM-3.05.
2.4.1
System Components. A schematic diagram of the environmental
controls compressed air system is shown in Figure 4. Basic components of
the system are:
8
Previous Page
