08/31/2007. The static Heli-Trainer embodied all essential elements
of a conventional helicopter, but was mounted on an articulated
gantry to allow a student controlled experience of helicopter
systems. The gantry allowed the helicopter to rise to a height of 2
ft (0.6 m), turn around a vertical axis and dip at up to 6° but
prevented it from flying outside these limits. A 40 hp Hirth engine
drove an one-bladed fibre-glass rotor with a counterweight. Eighteen
Heli-Trainers were sold to the German forces.