SAI KZ I

The SAI KZ I was a sport aircraft built in Denmark in 1937, the first aircraft built by the Kramme & Zeuthen firm.

KZ I
KZ I replica in Danmarks Flymuseum
Role Sport aircraft
National origin Denmark
Manufacturer Skandinavisk Aero Industri
Designer Viggo Kramme and Karl Gustav Zeuthen
First flight 24 February 1937
Number built 1

Design and development

The KZ I was a low-wing cantilever monoplane of conventional design, with fixed tailwheel undercarriage and an open cockpit with a single seat. Construction throughout was of wood.

Only a single KZ I was constructed, and it disappeared during the course of World War II. During the 1970s, a flying replica was built, with work started by Gunnar Fjord Christensen in 1972 and sold to the Danmarks Flymuseum in 1977. The completed aircraft flew for the first time on 20 November 1988, and in 2008 remains part of the museum's collection.

Specifications

Data from Danmarks Flymuseum : KZ I.[1]

General characteristics

  • Crew: 1
  • Wingspan: 7.2 m (23 ft 7 in)
  • Wing area: 8.4 m2 (90 sq ft)
  • Airfoil: root: NACA 23018; tip: NACA 23009[2]
  • Empty weight: 192 kg (423 lb)
  • Gross weight: 325 kg (717 lb)
  • Powerplant: 1 × ABC Scorpion 2-cylinder air-cooled horizontally-opposed piston engine, 28 kW (38 hp) (original engine)
Volkswagen 1500cc conversion 50 hp (37 kW) 4-cylinder air-cooled horizontally-opposed piston engine (1988 replica)
  • Propellers: 2-bladed fixed-pitch propeller

Performance

  • Maximum speed: 180 km/h (110 mph, 97 kn)
  • Landing speed: 60 km/h (37 mph; 32 kn)
  • Cruise speed: 160 km/h (99 mph, 86 kn)
  • Service ceiling: 5,000 m (16,000 ft)

References
  1. "KZ I". flymuseum.dk (in Danish). Copenhagen. Retrieved 19 April 2019.
  2. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 563.
  • Simpson, R. W. (1995). Airlife's General Aviation. Shrewsbury: Airlife Publishing. pp. 348–49.
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