Category F2 - Control Line Circular Flight
线操纵圆周飞行类

此类别是指由地面的运动员手握或栓在桩柱上的不能伸展的缆线来控制模型的飞行姿态和高度的飞行。　　
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.

Class（级别）:

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