the Aviation Dictionary

carburetor heater . casing ~lies. aircraft tires
of fuel to the induction system according to the
demand.
carburetor heater - A heater muff or jacket installed
around the exhaust manifold through which induction
air is drawn to warm it before it enters the carburetor.
This heat prevents the formation of carburetor ice.
carburetor ice - Ice that forms inside the carburetor due
to the temperature drop caused by the vaporization of
the fuel. Induction system icing is an operational
hazard because it can cut off the flow of the fuellair
charge or vary the fueliair ratio.
carburetor icing - Occurs when moist air is drawn into
the carburetor and is cooled to a dewpoint temperature
less than 0" C
carburetor maintenance - Maintenance that may
include idle speed adjustment, removal and installation,
adjusting idle mixtures, rigging, and inspection of
carburetors.
carhurizing - A form of case hardening of steel in
which carbon is infused into the surface of the steel to
increase its hardness.
link held between metal rings, or caps, that screw onto
each end of an insulating tube.
cartridge starter - An engine starting device that uses
electrically ignited solid fuel pellets. The pressure is
used to move a piston to start a reciprocating engine or
to turn a turbine wheel to start a turbine engine.
cartridge-pneumatic starter - A combination airturbine
starter and cartridge starter. It can be operated
by bleed air or by an explosive charge, both of which
exhaust through a turbine wheel connected to a
reduction gearbox. Its purpose is to start main engines.
cartridge-type filter - A disposable filter element. Used
for both fuel and oil systems.
cascade electrical circuits - A system of connecting
multiple levels of electrical circuits so that the output
of one level feeds the input of the next level.
cascade thrust reverser - A configuration of thrust
reverser used in turbojet engines in which thin airfoils
or obstructions are placed in the engine's exhaust
stream to duct the high-velocity exhaust gases forward.
This decreases the airplane's landing roll. Also referred
to as an aerodynamic thrust reverser.
carburizing flame - A
>.I- - -- :2-<
flame used in oxy-
--_--
cascade transformer - A device used in an electrical
acetylene welding in circuit to generate a h~gh voltage. A system of
which there is an excess of acetylene gas. Also called a connecting mult~ple levels of electrical step-up
reducing flame. This type of flame introduces carbon transformers where the output of one level feeds into
into the steel. It can be recognized by the greenish- the next level transformer, cascading until the required
white, brush-like second cone at the tip of the first high-output voltage is obtained.
cone. The outer flame is slightly luminous and has
cascade vane - An air turning vane. One common use is
about the same appearance as an acetylene flame
in thrust reversers.
burning freely in air alone.
case hardening - A form of heat treatment of a metal in
cardinal altitudes -Full thousands of feet of altitude or
which the surface is made extremely hard and brittle
flight level. (3,000 feeti4,OOO feetletc. or FL 330,FL
while the core of the metal retains its toughness.
340/etc.)
cardinal flight levels - See cardinal altitudes.
case pressure - A low pressure maintained inside the
case of a hvdraulic DumD. In the event of a damaged
cardinal headings - Headings along the four main seal, fluid will be fdrced out of the pump rather than
points of a compass: North, South, East, and West.
allowing air to be drawn in.
cardioid microphone - A microphone with the ability
to pick up sounds ahead of it, rejecting sounds behind
it.
cargo - Freight transported in an airplane.
cargo aircraft - An airplane whose main function is to
carry freight.
carrier frequency - The high frequency alternating
current that produces the electromagnetic waves that
radiate horn a radio transmitting antenna.
carrier wave - The high frequency alternating current
that can be modulated to cany intelligence - by
propagation as a radio wave.
cartridge fuse - A fuse used to protect an electrical
circuit from an excess of current. It consists of a fusible
Aircraft Technical Book Company
P.O. Box 270
Tabernash, CO 80478
http:llwww.ACTechbooks.com
casein glue - A form of powdered glue made from milk.
Casein glues are widely used in wood aircraft repair
work. For aircraft use, casein glues should contain
suitable preservatives such as the chlorinated phenols
and their sodium salts, to increase resistance to organic -
deterioration under high humidity.
casing - The rubber and fabric body of a pneumatic tire.
The casing is the same as the carcass of the tire. It is
composed of diagonal layers of rubber-coated fabric
cord (running at right angles to one another), providing
the strength of a tire.
casing plies, aircraft tires - Diagonal, strengthproviding
layers of rubber-coated nylon cord fabric
(running at right angles to one another).