TM 55-1730-229-34
AG 320A0-MME-000
TO 35C2-3-473-2
TM1730-34/1
Navy users shall determine
consistent with their capability in
c. (N)
accordance with policies established in
with their service directives.
AFM 66-1.
Section II. DESCRIPTION AND DATA
1-6. DESCRIPTION.
The Aviation Ground
a. General.
Power Unit (AGPU) MEP-360A is a gas tur-
pads on the gearcase. Fuel for operation
bine engine-driven, wheel mounted, self-
of the engine is supplied from an inte-
propelled (up to 3 mph on flat surface),
gral fuel tank or an external source.
enclosed unit. The AGPU can be towed
(20 mph maximum), and is air transpor-
Selection of fuel source is controlled
table.
started, the engine runs up to 100 per-
cent governed speed of 58,737 rpm, and
provides ac/dc electrical,
The AGPU
automatically maintains that speed until
hydraulic, and pneumatic power. Power is
shutdown. Engine air intake is through
available individually, or in any combi-
nation. The AGPU provides the ground
to the engine. Engine exhaust is through
power requirements for aircraft such as
an exhaust ejector, and out the roof
the following:
through an exhaust flapper.
AH-1 (Huey Cobra)
AH-64 (Apache)
d. Generator. The generator (figure
C-12 (Huron)
1-3) is a
self-cooled, continuous duty,
CH-47 (Chinook)
ac/dc, self-excited, brushless unit. It
OH-6 (Cayuse)
includes a permanent magnet stator and
OH-58 (Kiowa)
rotor, an exciter stator and rotor, and a
OV-1 (Mohawk)
main dc rotating field and ac stator. The
U-21 (UTE)
main ac stator incorporates three sets of
UH-1 (Iroquois)
three phase windings. One set of main
UH-60 (Blackhawk)
stator windings provides the 115/200 vac
output . The ac outputs of the other two
Control and regulation of the AGPU elec-
windings are full-wave rectified to pro-
trical and pneumatic systems is auto-
matic. Electronic devices monitor and
vide 28 vdc output.
and current; as well as pneumatic out-
The permanent magnet provides a three
puts. Control of the hydraulic system
phase output whenever the generator is
is semi-automatic, in that the operator
driven by the engine. When the engine
must set hydraulic pressure, and select
reaches 95 percent speed, a relay con-
operating modes.
nects the permanent magnet output to the
b. Exterior Features. A view of the
AGPU from the right rear is shown in
fies this ac voltage to provide dc con-
trol voltage for the GCU and dc excita-
the AGPU from the left front.
tion voltage for the generator exciter
C.
Engine/Gearcase. The gas turbine
field.
matic power, and shaft power to drive an
Change 2
1-2