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Model Aircraft Glossary


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AAA

Acronym of Anti-Aircraft Artillery and is prnounced triple A.


ABC

These letters are used to describe the type of piston and cylinder used in some engines.

Aluminium piston. Brass cylinder liner. Chrome coating on the surface of the brass cylinder liner. more......


ABS

A type of plastic often used for vacuum formed components such as cowlings.


ACM

Acronym of Air Combat Manoeuvering. Also another term for dogfighting.


Actuator

A device for moving a control surface or throttle by electro-mechanical means.


Adhesive Terminology

A list of terms used in the description of adhesive properties and manufacture. more......


Adjustable Throttle Limiter

High-end feature which adjusts to bring full servo potential within the limits of bind-free servo travel. Ideal for throttle control, or for more effective braking in gas racing.


Advancing Blade

The portion of the rotor disk in which the rotation of the blade is moving in the direction of the aircraft`s travel (into the relative airstream).

Reference: Aerodynamics Glossary - diracdelta.co.uk.


Adverse Yaw

A turn in the direction opposite to that introduced by the ailerons, caused by the drag of the down-going aileron exceeding the turning moment introduced by the up-going aileron. more...


Aerial

On a transmitter a metal rod, usually collapsible, which radiates the transmitted signal; or a trailing or rigid wire on a receiver which collects the signal.


Aerobatics

In 1913 a Frenchman by the name of Pegoud was the first person to perform aerobatics in a specially strengthened Bleriot. The first loop was made by Piotr Nesterov on 20th August 1913 in a Nieuport Monoplane. more...


Aerodynamics

The science or study of the forces acting on an aircraft in motion.


Aerofoil

The cross-section shape of a wing taken at right angles to the wing span., Also known as the wing section or rib section.


Aeronaut

One who flies balloons.


Aerostat

AirshipDenotes a lighter than air craft.


Aerothermodynamic

A branch of thermodynamics relating to the heating effects associated with the dynamics of a gas, particularly the physical effects produced in the air flowing over a vehicle during launch and reentry.


Aerotow

AerotowA method of launching a glider by towing it to altitude behind a powered aircraft. Some hints and tips on the art of aerotowing with radio controlled models. more......


AEW - Airborne Early Warning

A radar system installed in an aircraft that is used to detect the presence of aircraft, missiles, warships, etc entering a specified area. Information is relayed to ground stations or other patrolling aircraft such that action may be taken.


Afterburner

A system that feeds raw fuel into a jet's hot exhaust. It increases thrust but also fuel consumption.


Aft Rotor Tilt

The number of degrees the rotor disk is tilted aft in reference to the longitudinal reference line thru the model. Generally this is referring to the neutral or zero trim position of the disk.


AGL

Acronym for Above Ground Level. A normal altimeter reads Mean Sea Level (MSL), a more realistic altitude measurement over land is the AGL. Most military aircraft have a "radar-altimeter" to determine their height above ground level.


Aileron

These are situated on the trailing (back) edge of the wing and are used to make the aircraft roll. When flying straight and level, moving the control stick to the right will raise the aileron on the right wing and lower the aileron on the left wing. Thus increasing the lift on the left wing and decreasing the lift on the right wing (actually increases the lift on the right wing, but in the opposite sense to the left wing). more...

See also: Differential Control, Servo, Wing Warping.


Airbrake

An aerodynamic control which can be extended to increase drag and slow down an aircraft. Often used on model aircraft to control/increase descent rates. On some aircraft the air brakes are used in conjunction with the ailerons for lateral control at low speeds where the ailerons become ineffective.


Aircraft Markings

See also: International Aircraft Markings.


Airfoil

A surface, such as an airplane wing, shaped to produce lift when moved through the air.


Air Shows

Our events section is for you to use freely to advertise what's going on in your club, at national or international level.

See: Events.


Alcock & Brown

In 1919 John Alcock and Arthur Brown made the first east to west non-stop crossing of the Atlantic in 16 hours and 27 minutes.

See also: Chronology of Flight.


All Flying Tail

Horizontal tail surfaces which do not have a separate elevator. The whole surface moves as one to give pitch control.


All-weather fighter

A jet fighter designed to operate at night or in bad weather conditions. Normally equipped with radar amongst other navigational aids.


Amphibian

An aircraft capable of operating off either land or water.


Anemometer

A device for measuring windspeed.

See also: Beaufort Scale.


Anhedral

anhedralWhere the wings are set an angle such that the tips are lower than the centre. The opposite of DIHEDRAL.

See also: Dihedral, Polyhedral.


Angle of Attack

The angle at which a wing strikes the air stream.


Angle of Incidence

Angle of the wing chord line in relation to the longitudinal axis of the fuselage. This should not be confused with the Angle of Attack.


Articulated Rotor

This is borrowed from full sized helicopters, and is a rotor head which allows the blades to flap, drag and feather.


Aspect Ratio

The relationship of the wing span to the wing chord, expressed numerically by the number of times the span can be divided by the chord.

See also: Vortices.


Auster

Auster 5AutocratAuster Aircraft Ltd originates from The Taylorcraft Aviation Company. The early Taylorcraft's proved popular and so the British Taylorcraft company was formed, this became Auster after WWII.

If you would like to see more pictures our photographic library is available on www.glue-it.co.uk.


Autogyro

Wallis AutogiroAn aeroplane that flies by virtue of the lift generated by freewheeling rotating wings set 'windmill' fashion above the fuselage. The forward motion of the autogiro provides the force to keep the rotors turning so unlike a helicopter the autogiro cannot hover. more...


Automatic Flight Control System (AFCS)

An electromechanical system installed to improve the aerodynamic stability of an aircraft. An AFCS cannot program the aircraft's flight as does a conventional autopilot. It only serves to keep the aircraft in the flight condition established by the pilot.


Auto Pilot

An automatic control program which keeps an aircraft flying at a steady heading and at a constant height.


Autorotation

The ability of a rotary wing aircraft to land safely without engine power. This maneuver uses the stored energy in the rotor blades to produce lift at the end of decent, allowing the model to land safely.


Auto Rudder

A system used in free-flight models either to keep the rudder of a glider straight during tow and then automatically to set the glide turn on release, or, on rubber- and power-driven aircraft, to alter the rudder setting in flight, usually to re-trim from power to glide.


Avro

Avro LancasterThe Lancaster was the main stay of the RAF Bomber Command during WWII.

If you would like to see more pictures our photographic library is available on www.glue-it.co.uk - Avro.


Axis

The line around which a body rotates.


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z