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The debate as to what is scale and what is not will go on and on. We have generated a list of different scales.more...
The altitude above sea level beyond which an airplane can no longer climb more than 30 m (100 ft) per minute.
A motor-driven device for moving control surfaces and throttle of a radio controlled aeroplane.
The removable arm or wheel which bolts to the output shaft of a servo and connects to the pushrod. These are often cut and modified to suit the paricular application. Careful positioning of the holes in the output arms will allow you to produce a mechanical differential effect for airlerons or even throttle control where more precision is required around the idle setting.
See also: Servo
This radio feature allows you to install the servos where they can give the best pushrod routing without concern about the direction of servo rotation. When your installation is complete, turn on your radio and check each channel. If a channel operates opposite of its intended direction, a simple flick of a switch corrects the problem.
See also: Servo
The direction of flight is at an angle to the fore aft axis of the aircraft.
Offsetting the propeller thrust line, so there is a slight sideways pull.
Colloquial expression describing an engine mounted on its side.
A device used to reduce noise from the exhaust side of an engine.
Flight training from your armchair. A great way to sort out your skills.
A wing formed from a single sheet of balsa, or one that has a framework covered only on the top.
Slats are used on the leading edge of a wing to improve lift. They help the formation of a smooth boundary layer over the leading edge allowing the wing to operate at a higher angle of attack before seperation occurs.
See also: Flaps.
The column of air pushed rearward by a rotating propeller; it always moves faster than the aeroplane itself.
In the simplest terms it is flying a glider in the updraft created by the wind blowing on-shore and up a cliff.
A type of flexible pushrod consisting of a plastic or braided metal wire inner, inside a plastic sleeve.
A non-flying model formed from solid pieces of wood or plastic.
Spanwise load-carrying members of a wing or tail.
The rapid rotation of an aircraft after it has stalled. In order to recover the aircraft it is necessary to first increase the airspeed so that the flying surfaces are no longer stalled.
An ever-tightening downward corkscrew flying path.
The characteristic of an aeroplane that permits high-speed banked turns without diving to the ground.
The speed of sound is about 340 m/s or 760 mph at sea level.
The nose cone which covers the hub of the propeller. Check that the spinner does not touch the propeller blades as this may result in the propeller blades wearing and possibly failing. Remember a large spinner will result in less effective propeller area and a reduction in engine cooling.
Controls which can be deployed into the airflow to ‘spoil’ the lift. Usually found on gliders and used to aid landing.
A surface that is used to stabilise the aircraft during normal flight e.g. the tail fin and tailplane. Other designs such as a V-tail may be used to provide both pitch and yaw stability.
The tendency of an aeroplane to return to level flight, after having been disturbed by an upsetting force.
The complete loss of lift resulting from too steep an angle of attack.
The particular angle at which a wing abruptly loses lift; usually expressed in degrees.
See: Internal Combustion engines for methods of starting.
The operating arm on a transmitter which is moved to make the control surface move.
A step by step article on creating simulated stitching effect on fabric. more......
Short Take Off and Landing. Describes an aircraft with special high-lift devices to
keep the take off or landing run as short as possible.
The shape of the exposed contours of an aeroplane for the least possible air drag; usually rounded in front, pointed at the rear.
An outer covering used on wings and fuselages, designed to carry the tension and compression forces encountered in flight.
Light, lengthwise fuselage strips intended more to give the desired shape than to add strength.
Ailerons consisting of simple strips along the full length of the wing trailing edge.
Speeds below the speed of sound.
Speeds above the speed of sound.
The first aircraft in the world to break the sound barrier was the Bell X1. On the 14 October 1947 it reached 670mph at 42000feet (Mach 1.015). The X1 was launched by a Boeing B29 at 30000 feet, once released the rocket motor on the X1 was fired and it would begin it's ascent.
The angling back of the wings from the centre, to increase directional stability or reduce drag at high speed.
The swept back wings of an electric fan powered F86 Sabre.
The leading and trailing edges of a wing are angled backwards to reduce drag at high speeds.