F3C
May 2, 2008 on 5:00 am | In class | No CommentsFor the FAI/CIAM F3C competition class pilots must perform complex hovering and aerobatic manoeuvres with a radio controlled model helicopter. Each manoeuvre must be executed with high precision and skill in any attitude and under all weather conditions. F3C model helicopters have a weight limit of 6kg, a maximum rotor disc area of 250dm2 and are powered by internal combustion engines with a maximum displacement of 15ccm or electric motors with a maximum battery voltage of 42 Volts. The engines/motors must be adequately silenced to meet a specified noise limit. The on-board radio control equipment, receiving signals from the competitor’s transmitter, actuates the engine throttle, main rotor lateral and longitudinal cyclic pitch, main rotor collective pitch and tail rotor pitch to guide the model helicopter through hovering and aerobatic manoeuvres. Continue reading F3C…
F3A
April 30, 2008 on 4:28 am | In class | No CommentsThe F3A class is a team as well as an individual competition. FAI member countries may enter a team of maximum three competitors as a national team for world- and continental championships. Team results are the sum of the three competitors’ scores. Continue reading F3A…
F3B/F3J
April 29, 2008 on 4:30 am | In class | No CommentsThe “F3B subcommittee” was initiated long time ago, and was named respectively after the only Radio Control Glider class at the time, the “F3B”. Today its name has changed to “RC-Soaring Subcommittee” as it is responsible for the development and monitoring of five more Radio Controlled Glider classes, a brief description of which is presented below. Continue reading F3B/F3J…
F2
April 28, 2008 on 4:25 pm | In class | No CommentsThe second oldest competition class for flying model aircraft is control line or F2 class models. Their popularity rose quickly after the World War II and they were accepted into FAI/CIAM World Championship competition in 1960. These model aircraft are controlled in flight by a system of two wires leading from a simple “C” shaped handle to the two base points of a pivoted metal triangle mounted in the aircraft – usually at the wing center within the fuselage. The third point of this pivoted triangle is connected by a stiff “pushrod” to the horizontal moving elevator of the aircraft. The connection is to a short “control horn” which is mounted perpendicular to the surface of the elevator. The pilot holds the handle vertically with the “up” wire connection at the top or towards the thumb. Deflecting the wrist toward the thumb or 5th digit will pull on either the “up” or “down” wire, and this is translated into a push or pull of the pushrod which in turn deflects the elevator (hinged to the horizontal stabilizer) into its up or down deflection. Thus, in addition to level flight, the model aircraft can climb or dive and perform any maneuver about its horizontal axis through the wing. Loops in either “inside” (cockpit to the center of the loop) or “outside” direction (cockpit to the outside of the loop), inverted flight, square or triangular shapes to the loops, combination maneuvers such as figure eight, hourglass and cloverleaf may be performed. The model aircraft flies level in a circle with the pilot as the center of rotation and maneuvers take place on a virtual hemisphere centered on the pilot. Continue reading F2…
F1
April 27, 2008 on 4:23 pm | In class | No CommentsFree Flight models are flown without any form of mechanical or radio control over the model in flight. This is the earliest form of aeromodelling, a particular milestone being the first model powered by a rubber band built and flown by Alphonse Penaud in 1871. Always present since that time has been the joy and achievement of releasing a model and seeing it soar overhead in its planned flight pattern. Continue reading F1…
What is Aeromodelling
January 27, 2008 on 3:33 pm | In Uncategorized | No CommentsAeromodelling is the art of making and flying non man-carrying aircraft. The aircraft can be a scale model of a full size aircraft or a design specifically for the hobby. Model aircraft can be anything from un-powered and uncontrolled, gliders, to multi engine radio controlled aircraft with wingspans of six or more feet. Many people start off by building a free flight model from a kit, and progressing to more advanced models as their skills improve. Continue reading What is Aeromodelling…
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