Hobbico Awarf Series, Manual

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Computer Radio – A radio control
unit in which the transmitter has
several advanced functions which
can be programmed completely to
fine tune an airplane without
making mechanical changes.
Control Horn – The arm which is
attached to a control surface at the
hingeline and is connected to a
pushrod.
Dead Stick – A term used to
describe unpowered flight (glide)
when the
engine quits running.
Differential Throw – Ailerons that
are set up to deflect more in the
upward direction than downward
are said to have “Differential
Throw.” The purpose is to
counteract “Adverse Yaw.”
Dihedral – The V-shaped bend in
the wing. Typically, more dihedral
causes more aerodynamic stability
in an airplane and causes the
rudder to control both roll and
yaw axis. This is why some
trainers and sailplanes require
only 3-channels of radio control—
i.e., having no
ailerons.
Ding – Minor dent or damage to
the structure. Also, a nick in a
prop. Dinged props must be
replaced.
Down Thrust – Downward angle
of the engine relative to the
centerline of the airplane. Down
thrust helps overcome the normal
climbing tendency of flat bottom
wings.
Electric Starter – A hand-held
electric motor used for starting a
model airplane
engine. Usually
powered by a 12-volt battery.
Elevator – Hinged control surface
located at the trailing edge of the
horizontal stabilizer, which
provides control of the airplane
about the
pitch axis and causes
the airplane to climb or dive. The
correct direction of control is to
pull the
transmitter elevator
control stick back, toward the
bottom of the transmitter, to
move the elevator upward, which
causes the airplane to climb and
vice versa to dive.
Epoxy – A two-part resin/hardener
glue that is extremely strong. It is
generally available in 6 and
30-minute formulas. Used for
critical points in the aircraft where
high strength is necessary.
Expanded Scale Voltmeter (ESV) –
Device used to read the battery
voltage of the on-board battery
pack or
transmitter battery pack.
Field Charger – A fast battery
charger designed to work from a
12-volt power source, such as a
car battery.
Flaps – Hinged control surface
located at the trailing edge of the
wing inboard of the ailerons. The
flaps are lowered to produce more
aerodynamic lift from the wing,
allowing a slower takeoff and
landing speed. Flaps are often
found on scale models, but usually
not on basic trainers.
Flare – The point during the
landing approach in which the
pilot gives an increased amount of
up elevator to smooth the
touchdown of the airplane.
Flight Box – A special box used to
hold and transport all equipment
used at the flying field.
Flight Pack (or Airborne pack) –
All of the radio equipment
installed in the airplane, i.e.,
Receiver, Servos, Battery, Switch
Harness.
Flutter – A phenomenon whereby
the elevator rudder or aileron
control surface begins to oscillate
violently in flight. This can
sometimes cause the surface to
break away from the aircraft and
cause a crash. There are many
reasons for this, but the most
common are excessive hinge gap
or excessive “slop” in the pushrod
connections and control horns. If
you ever hear a low-pitched
buzzing sound, reduce throttle
and land immediately.
Frequency Control – The FCC has
allowed the 72MHz band to be
used for R/C aircraft operations.
This band is divided up into many
different channels in which you
can choose a radio system. You
should be aware that certain areas
have frequencies in which there is
pager interference. This is why it is
always a wise move to check with
your local hobby shop to find out
any channels that may be
troublesome in the area you wish
to fly.
Fuel Overflow Line (Vent) – The
fuel line is either open to
atmospheric pressure or attaches
to the muffler pressure nipple to
pressurize the
fuel tank for better
fuel flow to the engine. This is the
line through which the fuel will
overflow when the tank is full.
Fuel Pick-Up Line – The fuel line
in the fuel tank through which fuel
travels to the carburetor. Typically
a flexible tube with a weight or
“Clunk” on the end which allows it
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