two-cycle,
water-cooled,
diesel
engine
and
components, ac and dc generators, are enclosed in a
removable steel housing. The ac and dc power cables
are stored on spring-loaded reels next to the control
panel and deliver 115/200-volt, 3-phase, 400-hertz ac
and 28-volt dc electrical power. A tow bar for towing
and steering, tie-down rings, fire extinguisher, hinged
doors for operation, and manual hand brake are
provided.
MMG-1A Mobile Electric Power Plant (MEPP)
The MMG-1A (fig. 9-18) is a small, compact,
trailer-mounted, electric motor-driven generator set. It
provides 155/200-volt, 3-phase, 400-hertz ac power,
and 28-volt dc power for aircraft maintenance,
calibration, and support. Operation of the unit requires
a 3-phase, 60-hertz, 220- or 440-volt external power
source. The 30-foot input and output cables are stowed
in compartments in the rear and left front side of the
unit. It is used both aboard ship and ashore. The MEPP
is not self-propelled and must be towed or manually
moved. The 4-wheel trailer is equipped with tie-down
rings, pneumatic tires, a mechanical hand brake, and a
tow bar for towing and steering.
A/M47A-4 Jet Aircraft Start Unit
The A/M47A-4 jet aircraft start unit (fig. 9-19) is a
4-wheel, trailer-mounted, transportable gas turbine air
9-11
ANF0918
Figure 9-18.—MMG-1A mobile electric power plant.
ANF0919
Figure 9-19.—A/M47A-4 trailer-mounted jet aircraft start unit.
