SAI KZ VII

The SAI KZ VII Lærke (Danish: "Lark") was a light utility aircraft built in Denmark shortly after the Second World War. Based on the SAI KZ III air ambulance, the KZ VII was a strut-braced, high-wing monoplane of conventional design with an enclosed cabin for four seats. Fifty-six aircraft were built, and another 22 partially completed aircraft were destroyed in a factory fire in 1947. The Danish Air Force operated 10 of the type as trainers between 1950 and 1977.

KZ VII Lærke
KZ VII Lærke in flight at Danish Air Show 2014
Role Utility aircraft
National origin Denmark
Manufacturer Skandinavisk Aero Industri
Designer Viggo Kramme and Karl Gustav Zeuthen
First flight 11 November 1946
Primary user Danish Air Force
Number built 56

Operators
 Denmark
 Germany

Specifications

Data from Jane's All The World's Aircraft 1953–54.[1]

General characteristics

  • Crew: 2
  • Capacity: 2 passengers
  • Length: 6.56 m (21 ft 6 in)
  • Wingspan: 9.6 m (31 ft 6 in)
  • Height: 2.1 m (6 ft 11 in)
  • Wing area: 13 m2 (140 sq ft)
  • Airfoil: NACA 23012 [2]
  • Empty weight: 464 kg (1,023 lb)
  • Gross weight: 867 kg (1,911 lb)
  • Fuel capacity: 110 L (29 US gal; 24 imp gal)
  • Powerplant: 1 × Continental C125 6-cylinder air-cooled horizontally-opposed piston engine, 93 kW (125 hp)
  • Propellers: 2-bladed, 1.9 m (6 ft 3 in) diameter fixed-pitch propeller

Performance

  • Maximum speed: 200 km/h (120 mph, 110 kn) at sea level
  • Cruise speed: 185 km/h (115 mph, 100 kn)
  • Landing speed: 64 km/h (40 mph; 35 kn)
  • Service ceiling: 4,115 m (13,501 ft)
  • Rate of climb: 2.833 m/s (557.7 ft/min)
  • Wing loading: 66.6 kg/m2 (13.6 lb/sq ft)
  • Power/mass: 9.3 kg/kW (15.3 lb/hp)

References
  1. Bridgman, Leonard (1953). Jane's All The World's Aircraft 1953–54. London: Jane's All The World's Aircraft Publishing Company. p. 122.
  2. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading
  • Simpson, R. W. (1995). Airlife's General Aviation. Shrewsbury: Airlife Publishing. pp. 348–49.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 563.
  • "The KZ-VII in the Air". Flight: 464. 22 May 1947. Retrieved 15 September 2008.
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