assembly, upon arrival at its temporary location,
can be installed on a trailer, as shown in the lower
can be operated by attaching it to a fuel supply.
view of this figure. This permits ease of move-
ment from aircraft to aircraft and from place to
The control panel is part of the flyaway, and
place.
is located on one end of the NCPP-105 unit, as
The NCPP-105 supplies compressed air at two
shown in figure 3-13. The control panel contains
pressure ratios (5:1 and 3.6:1) for aircraft engine
the complete operating instructions for the
starting, and ac and dc electrical power for opera-
operation of the unit.
tion of aircraft ac and dc electrical components.
It is equipped with an ac output cable, a dc out-
put cable, and a bleed-air duct assembly.
HYDRAULIC POWER SUPPLIES/
HYDRAULIC TEST STAND
The unit enclosure consists of a forward and
aft enclosure (hinged together), a cable stowage
Portable hydraulic power supplies/test stands
compartment, a muffler assembly, a fuel tank
provide a means of simulating the aircraft's
structural assembly, and a base assembly.
hydraulic pump. By connecting a hydraulic power
The flyaway assembly is normally operated
supply/test stand to the aircraft's hydraulic
while in the NCPP-105 enclosure, with the dc
system, the various actuating systems can be
power supply mounted in the forward enclosure.
operated without turning up the aircraft engine.
However, when it is required to transport the
One of the systems that might be checked out this
flyaway assembly by aircraft to a temporary
way is the aerial refueling store. The power supply
location, the dc power supply is removed and
is connected to the aircraft system at ground test
relocated on the flyaway assembly structure. The
couplings (quick disconnects) provided on the
fuel line and ac and dc electrical output cables are
aircraft.
disconnected, the forward and aft enclosures are
The A/M27T-5 portable hydraulic power
lifted off the structure assembly, and the flyaway
supply is a single system hydraulic pumping unit.
assembly is then removed from the base assembly.
See figure 3-14. It is rated at 20 gpm at 3,000 psi
The flyaway assembly, with its remote cable, ac
and 10 gpm at 5,000 psi.
and dc electrical output cables, and bleed-air duct
Figure 3-14.-A/M27T-5 portable hydraulic power supply.
3-12
