The process of energy production consists of two separate phases. During the traction phase, the lift force produced by the wing is transmitted via a rope to a generator. The pulley is unrolled continuously, generating electricity until the maximum rope length is reached. In the second phase – the retraction phase – the wing is overtaken again. Optimization of control and wing shape allows the consumes in the latter phase to be lower than the generated power in the first phase. This results in a net energy gain. Due to the intended circular trajectory, a very high efficiency can be achieved. Furthermore, thanks to carbon fiber reinforced plastic (CFRP) wings, much larger forces can be taken, e.g. compared to flexible steering screen.
With the implementation of Morphing we are able to operate at different wind speeds. Morphing makes it possible to continuously deform the wing during flight and thus to optimize it for different flight situations, to minimize the structural load and to execute control commands. With the development of a vertical start sequence, we are opening the doors to fully autonomous operation, which has been an important step for years.