What is the ratio of height gained to cable length when winch launching?

In winch launching, the ratio of height gained to cable length is an important parameter that describes the efficiency of the launch. This ratio indicates how much altitude a glider can achieve compared to the length of the cable being deployed.

The correct answer is based on the fundamental mechanics of the winch launch process. As the winch pulls the cable, it creates an upward force on the glider. The relationship between the height gained by the glider and the length of the cable is influenced by the angle at which the cable is pulled and the aerodynamic forces acting on the glider.

When you analyze the geometry of the situation, it has been established through practical experience and calculations that the typical ratio of height gained to the length of the cable during a winch launch is roughly one-third. This means if the cable length is divided into three parts, one part represents the height that the glider gains, making the ratio 1/3. This accounts for energy transfer efficiencies and the various forces acting during the launch process, such as drag and lift.

This understanding forms the basis of effective winch launching strategies and allows cadets to appreciate the mechanics at play during the process. It is crucial in operational settings to maximize performance and safety during launches.