WHAT IS CONTROL LINE?
Control line offers an inexpensive alternative to radio control as flying is executed close to the ground in relatively small spaces. The aircraft is connected to the operator by a pair of lines, attached to a handle, that work the elevator of the model. This allows the model to be controlled in the pitch axis. Little or no maneuverability or even lift is required, as once at speed the model's altitude is maintained by centrifugal force. It is constrained to fly on the surface of a hemisphere by the control lines. The control lines are usually either stranded or solid wires of anywhere from 0.008" (0.2mm) to 0.021" (0.5mm).
The controls of a conventional 2-line/"U-Control" system consist of lead-out cables, a bell-crank, push rods and control horns. These are connected so that differential motion of the lines rotates the bell crank, causing a pushrod to move either forward or aft. The pushrod is connected to the control surface with a control horn that moves the elevator (and flaps, if used) up and down. The pilot holds a handle to which the lines are attached. Tilting the handle with the fingers, wrist, and/or elbow motion causes the differential movement in the lines. By convention, tilting the hand so the top is closer to the pilot than the bottom results in "up" elevator, much like pulling back on a full-scale airplane control stick. Also by convention, most airplanes are flown nominally counter-clockwise as viewed from above, with the lead out cables exiting the left wing
But the name most associated with the promotion of control line, and the inventor of the formerly patented system known as "U-Control" (which was a trademark) was Nevilles E. " Jim" Walker. Aero-Sports offers a Ready to Fly Control Line Model “Ajay” and you can place orders for it with us.
Control line offers an inexpensive alternative to radio control as flying is executed close to the ground in relatively small spaces. The aircraft is connected to the operator by a pair of lines, attached to a handle, that work the elevator of the model. This allows the model to be controlled in the pitch axis. Little or no maneuverability or even lift is required, as once at speed the model's altitude is maintained by centrifugal force. It is constrained to fly on the surface of a hemisphere by the control lines. The control lines are usually either stranded or solid wires of anywhere from 0.008" (0.2mm) to 0.021" (0.5mm).
The controls of a conventional 2-line/"U-Control" system consist of lead-out cables, a bell-crank, push rods and control horns. These are connected so that differential motion of the lines rotates the bell crank, causing a pushrod to move either forward or aft. The pushrod is connected to the control surface with a control horn that moves the elevator (and flaps, if used) up and down. The pilot holds a handle to which the lines are attached. Tilting the handle with the fingers, wrist, and/or elbow motion causes the differential movement in the lines. By convention, tilting the hand so the top is closer to the pilot than the bottom results in "up" elevator, much like pulling back on a full-scale airplane control stick. Also by convention, most airplanes are flown nominally counter-clockwise as viewed from above, with the lead out cables exiting the left wing
But the name most associated with the promotion of control line, and the inventor of the formerly patented system known as "U-Control" (which was a trademark) was Nevilles E. " Jim" Walker. Aero-Sports offers a Ready to Fly Control Line Model “Ajay” and you can place orders for it with us.
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