Baumgartl PB-63
The Baumgärtl PB-63 was a 1950s single-seat helicopter designed and built by the Austrian-designer Paul Baumgärtl for the Brazilian Air Ministry. The PB-63 was of a conventional pod and boom design with an open steel-tube construction and it had a single main rotor and a tail-mounted anti-torque rotor. It had a tricycle landing gear with the pilot in an open sided cabin at the front. The PB-63 was powered by an Continental C85-12 flat-four piston engine.