Puneet Varma (Editor)

Baumgärtl Heliofly III

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Length
  
6.1 m

Manufacturer
  
Paul Baumgärtl

First flight
  
1942

Baumgärtl Heliofly III wwwaviastarorgfotobaumgartlheliofly359jpg

The Baumgärtl Heliofly III/57 and Baumgärtl Heliofly III/59 were 1940s experimental backpack helicopters designed and built by the Austrian-designer Paul Bäumgartl. 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.

A problem with the supply of the As 8 engine forced a re-design to use one 16 hp (12 kW) engine, 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.

Specifications (16hp)

Data from The Illustrated Encyclopedia of Aircraft

General characteristics

  • Crew: 1
  • Length: 6.10 m (20 ft 0 in)
  • Main rotor diameter: 2× 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)

    • References

    Baumgärtl Heliofly III Wikipedia
    (Text) CC BY-SA


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