In a no wind condition, which control is typically used to change heading?

In a no wind condition, the cyclic control is primarily used to change the heading of a helicopter. The cyclic allows the pilot to tilt the main rotor disc in the desired direction. When the cyclic is pushed forward, backward, or to the side, it alters the angle of the rotor blades as they rotate, thus directing the helicopter's movement in the intended direction. As a result, the helicopter will pivot around its vertical axis and change its heading effectively.

In no wind conditions, other controls such as collective and throttle serve different functions. The collective control is used to change the overall lift generated by the rotor system, primarily affecting altitude rather than heading. The rudder, while it can assist in changing heading, is more effective when there are wind effects or when compensating for yaw. The throttle controls engine power, affecting the overall performance and flight characteristics but not directly steering the helicopter. Thus, the cyclic is the key control when it comes to altering the heading in calm conditions.