Aerotechnik WGM 21 was a single-seater helicopter, developed by the the German company “Aerotechnik, Entwicklung und Apparatebau GmbH” in Frankfurt. It has been a rare quadrocopter type. The engineers wanted to develop a simple VTOL aircraft, easier to fly than a conventional helicopter that should cost not more than a medium-class car. Furthermore it had to require little place in a hangar.
The WGM 21 had four diametral arranged rotors, each with two rotor blades. It didn’t need neither a tail rotor nor any control surface. The steering around its yaw axis was similar to the steering of a plane with pedals. The rotor arms moved around their own axis.
The four rotors were connected with the airframe by aluminium tubes. A two cylinder BMW flat engine with a power of 54 hp drove the rotors. The power transmission had been performed by V-belts. The pilot sat in an open seat. Controls were a V-shaped stick and pedals.
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Daily from 10 a.m to 5 p.m.
Closed on: Dec. 24/25/31 and on Jan. 1
Adults: 9.50 € (red. 8.50 €)
Ages 6 to 16: 4.50 €
Group discount (15+ persons): 1.00 € per person
GUIDED TOURS (RESERVATION REQUIRED)
Adults: 2.00 € (min. 40 € per group)*
Ages 6 to 16: 1.00 € (min. 25 € per group)*
Intensive tour: 60 € (ca. 3 hours)
* Group sizes larger than 15 persons: an additional 2.00 € per adult or 1.00 € for ages 6 to 16 will be charged.