User manual

Aerosoft Wilga X 1.00 Manual
Page 6 of 21
AIRCRAFT SYSTEMS
OIL SYSTEM
The oil system is used for lubrication, cooling and is used by the propeller control mechanism. It consists of oil
tank, oil filter, oil cooler (with a louvers air flow control mechanism controlled by a turn knob in the cockpit),
engine driven oil pump and a cockpit indication for the oil pressure and oil temperature. Proper use of the oil
cooler is important and oil temperature should be monitored closely. It is important that oil cooling and engine
air cooling should be used together and not working against each other.
FUEL SYSTEM
The fuel system provides the engine with fuel and consists of two wing mounted tanks (each with a fuel level
indicator), hand operated primer pump, fuel selector switch, small feeder tank and a fuel filter. The primer
pump is used to prime the engine with fuel if it has been off for some time. Normally 3 pulls are enough. When
the engine runs the primer pump should be locked (turned horizontal). When total fuel load is below 30 liter
the fuel selector has to be at L/R to ensure a reliable fuel flow. The Wilga will use around 55 l/h in cruise.
HYDRAULIC SYSTEM
The hydraulic system of the Wilga is very basic and only serves to operate the two (independent) wheel
brakes. It’s a fully closed system without any pressurization.
PNEUMATIC SYSTEM
The pneumatic system is used to start the engine and consists of two pressure vessels, a main control with
manometer, air and condense filters and a small engine driven compressor. The system can be pressurized on
the ground with a standard compressor (up to 50 kp/cm²) and will be pressurized in flight by the engine driven
compressor.
ELECTRICAL SYSTEM
The electrical system is used to provide instruments, radios and engine ignition system with power. It consists
of a 24,5 volt battery, engine driven generator and an electrical bus divided in 12 separate sections, each
protected by a fuse.
RADIO
Mounted in the main panel is the R-860 transceiver for the 118.0 - 135.9 MHz frequency range. It’s a basic
radio set with an expected range of 100 km. Operation is simple, after switching the system on and waiting 2
minutes the frequency can be set with the MHz and KHz controls. The system is connected to the on-board
communication system that activated with a separate switch.