Category F2 - Control Line Circular Flight
This is a flight during which the aeromodel is aerodynamically
manoeuvred by control surfaces in attitude and altitude
by the pilot on the ground by means of one or more inextensible
wires or cables directly connected to the aeromodel.
Devices in which the control wires or cables are held
in the hand or connected to a central pivot may be used.
No other means of controlling the model or the engine
may be employed during the takeoff and flight except
that exercised by the pilot through the line or lines.
F2A - SPEED MODELS 竞速模型
F2B - AEROBATIC MODELS 特技模型
F2C - TEAM RACING MODELS 小组竞速模型
F2D - COMBAT MODELS 空战模型