Haufe Buzzer 2

The Haufe Buzzer 2 is an American high-wing, strut-braced single-seat motor glider that was designed and constructed by Walter Haufe.[1][2]

Buzzer 2
Role Motor glider
National origin United States
Designer Walter Haufe
Introduction 1975
Status Production completed
Primary user Walter Haufe
Number built one
Developed from Haufe Ha-S-2 Buzzer

Design and development

After Haufe's earlier Buzzer was deemed less than successful, due to the insufficiently reliable Nelson Aircraft engine, Haufe retired that design and designed a new aircraft, which became the Buzzer 2. Intended to be a cross between a conventional sailplane and a light aircraft the aircraft was built with a 34 ft (10.4 m) wing span and has a 16:1 glide ratio.[1][2]

The Buzzer 2 is constructed with a welded steel tube fuselage and a wooden wing, all covered with doped aircraft fabric covering. The relatively low 8:1 aspect ratio wing uses a single spar and is supported by a single lift strut. The wing employs a modified NACA 2412 airfoil. The landing gear is a fixed monowheel and two wing-mounted outrigger wheels that support the wing during taxiing. The engine is a Curtiss snowmobile engine that turns at a maximum rpm of 6000, powering the propeller through an oil-immersed 2:1 chain reduction drive, giving a propeller speed of 3000 rpm.[1][2][3]

Only one Buzzer 2 was constructed.[1][2][4]

Operational history

Haufe reported that the aircraft uses 600 ft (183 m) to take-off and climbs at about 500 feet per minute (2.5 m/s). The aircraft was still on the US Federal Aviation Administration registry in July 2011, registered in the Experimental - Amateur-built category.[2][4]

Specifications (Buzzer 2)

Data from Sailplane Directory and Soaring[1][2]

General characteristics

  • Crew: one
  • Wingspan: 34 ft 0 in (10.36 m)
  • Wing area: 124 sq ft (11.5 m2)
  • Aspect ratio: 8:1
  • Airfoil: NACA 2412 modified
  • Empty weight: 390 lb (177 kg)
  • Gross weight: 600 lb (272 kg)
  • Powerplant: 1 × Curtiss two stroke snowmobile engine

Performance

  • Maximum glide ratio: 16:1
  • Rate of climb: 500 ft/min (2.5 m/s)
  • Wing loading: 4.8 lb/sq ft (23 kg/m2)
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See also

References
  1. Activate Media (2006). "Buzzer 2 Haufe". Archived from the original on 29 August 2012. Retrieved 25 July 2011.
  2. Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 121. Soaring Society of America, November 1983. USPS 499-920
  3. Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Archived from the original on 20 April 2010. Retrieved 1 July 2011.
  4. Federal Aviation Administration (July 2011). "Make / Model Inquiry Results N7462". Retrieved 25 July 2011.
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