Baumgärtl Heliofly III

The Baumgärtl Heliofly III/57 and Baumgärtl Heliofly III/59 were 1940s experimental backpack helicopters designed and built by the Austrian-designer Paul Bäumgartl.[1] Following on from his earlier experiments with strap-on autgyros the Heliofly III/57 was powered by two 8 hp (6 kW) Argus As 8 piston engines each driving a single-blade of the contra-rotating rotors.[1][2]

Heliofly III
Role Experimental backpack helicopter
National origin Austria
Manufacturer Paul Baumgärtl
Designer Paul Baumgärtl
First flight 1942
Number built 1

A problem with the supply of the As 8 engine forced a re-design to use one 16 hp (12 kW) engine,[1] powering two rotors on a common co-axial shaft, with the engine driving one rotor directly and the other through gearing to overcome the torque effects.[1][2]

Specifications (16hp)

Data from [1] The Illustrated Encyclopedia of Aircraft

General characteristics

  • Crew: 1
  • Length: 6.10 m (20 ft 0 in)
  • Empty weight: 35 kg (77 lb)
  • Gross weight: 120 kg (265 lb)
  • Powerplant: 1 × piston engine , 12 kW (16 hp)
  • Main rotor diameter: 2× 6.10 m (20 ft 0 in)
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See also

Related lists

References

Notes
  1. Orbis 1985, pp. 498-499
  2. Nowarra, Heinz J.. Die Deutsche Luftruestung 1933-1945 - Vol.1 - AEG-Dornier. Bernard & Graefe Verlag. 1993. Koblenz. ISBN 3-7637-5464-4 (Gesamtwek), ISBN 3-7637-5465-2 (Band 1)

Bibliography
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
  • Nowarra, Heinz J.. Die Deutsche Luftruestung 1933-1945 - Vol.1 - AEG-Dornier. Bernard & Graefe Verlag. 1993. Koblenz. ISBN 3-7637-5464-4 (Gesamtwek), ISBN 3-7637-5465-2 (Band 1)


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