The Cessna 182 may be your first flying model BEC Battery Eliminating Circuit:
and it may therefore be useful to understand some is a circuit for electric powered models where a
of the technical expressions used in this hobby. separate power source for the receiver is not
Some of these terms and their meanings are required. The receiver is supplied with current from
detailed as follows in alphabetical order. the flight battery. The voltage is controlled by a
special device to a specific value.
Accumulator: Rechargeable storage unit for Centre of gravity: The centre of gravity is the
electrical energy commonly referred to as a central point at which the forward and rear sections
rechargeable battery. For model airplanes Nickel of the aircraft can be balanced. In an airplane the
Metal Hydride (NiMH) and Lithium Polymer position of the centre of gravity in relation to lift,
batteries (Lipo) are used. The stored energy is plays an important role.
measured in Milli-Ampere-Hours (mAh). A battery
with 1300mAh is able to discharge a current of 12A Crystal: With the technology used to date, it is
for6 minutes. To operate the motor of an airplane
the battery must be able to discharge heavy possible to control several models at the same
current; within a few minutes it transmits its energy time via different channels (frequency bands), each
with the aid of the speed controller to the motor. channel must be specified by means of the quartz
Accumulators / batteries can be charged frequency crystals to be inserted into the
depending on their specification several hundred transmitter and receiver. The Cessna 182 is
times. Make sure to use only the charger which is controlled via a system in the 2.4 GHz frequency
suitable for your type of battery. Worn out or band which, thanks to state-of-the-art technology,
defective batteries (hazardous) must be disposed permits the simultaneous operation of almost any
in an approved manner. number of models without the use of quartz
crystals. Susceptibility to disturbance relative to
other transmitters (e.g. including radiotelephony
with overreach) is almost zero compared to
existing technology. Transmitter and receiver are
assigned to each other, a reaction to an
Aileron: An airplane turns rather like a extraneous signal is suppressed.
motorcycle, with aerodynamic and gravitational
forces playing an important factor. The sideways Electric motor: Motor for direct current. The
pitch of a conventional aircraft is achieved by design of motors and batteries which can use high
moving the flaps or ailerons on the wing. On the powered flying with electric aeroplanes has now
MINIMOA the separate control surfaces of the been achieved. Motors and batteries become hot
optional ailerons are operated in the opposite during the flight. Let them cool down before
direction. recharging and before the next flight. See also:
speed controller, brushless.
Cessna 182
Elevator: The elevator of an airplane in a normal
design is similar to a small wing at the tail of the
plane with a moveable flap at its end. By moving
this control surface up or down the lifting forces at
Battery / dry cell: Dry cells like Alkaline the elevator are altered; the tail of the plane is
batteries are disposable power sources. With the dropped or lifted, resulting in ascent or descent of
Cessna 182 dry cells can be used for the the airplane.
operation of the transmitter. At the end of its
lifetime the voltage of a battery decreases and
must be disposed. Never try to recharge a dry cell
with any charger; which may result in fire or
explosion.
Appropriate servomotors and the
operating linkage are already installed in the
. When constructing the aircraft, the
appropriate connectors must be inserted into the
receiver on the wing root.
EXPLANATION OF SOME MODEL AIRCRAFT EXPRESSIONS
LiPo-
battery-pack
2 cells
20C
X-Pack
LiPo-Akku7
,4V
mAh
CESSNA 182 CARSON R/C MODEL AIRCRAFT 50 050 5017 7
GBGB