SAI KZ III

SAI KZ-III Laerke
KZ III air ambulance at The Danish Collection of Vintage Aircraft
Role utility aircraft
Manufacturer SAI
First flight 1944-09-11
Primary user Denmark
Produced 1946–1951
Number built 64

The SAI KZ III Laerke was a Danish light utility aircraft used by the Danish Air Ambulance Service and Danish Air Force.

The first flight was on 11 September 1944, when Denmark was still under German occupation (the Germans permitted an aircraft to be built for Danish Air Ambulance Service).[1]

The aircraft had a high wing and was of mixed construction, fabric- and plywood-covered.

Operators

Civil operators

 Denmark
  • Danish Air Ambulance Service

Military operators

 Denmark

Specifications

Data from Jane's all the World's Aircraft 1947[2]

General characteristics

  • Crew: one
  • Capacity: one
  • Length: 6.6 m (21 ft 8 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 12023
  • Empty weight: 368 kg (811 lb)
  • Max takeoff weight: 706 kg (1,556 lb) with auxiliary tank full, 34 kg (75 lb) and extra 21 kg (46 lb) luggage
  • Fuel capacity: 41 l (11 US gal; 9.0 imp gal)
  • Powerplant: 1 × Blackburn Cirrus Minor II 4-cyl. inverted air-cooled in-line piston engine, 75 kW (100 hp)
  • Propellers: 2-bladed Weybridge, 1.9 m (6 ft 3 in) diameter wooden fixed pitch propeller

Performance

  • Maximum speed: 185 km/h (115 mph; 100 kn) at sea level
  • Cruise speed: 170 km/h (106 mph; 92 kn) at 2,200 rpm
  • Range: 500 km (311 mi; 270 nmi)
  • Ferry range: 805 km (500 mi; 435 nmi)
  • Service ceiling: 4,115 m (13,501 ft)
  • Maximum glide ratio: 1:8 (flaps up); 1:5 flaps down
  • Rate of climb: 3.6 m/s (700 ft/min)
  • Wing loading: 48.83 kg/m2 (10.00 lb/sq ft)
  • Power/mass: 9.72 kg/kW (16 lb/hp)

See also

Related development SAI KZ VII Aircraft of comparable role, configuration and era RWD-13 – Piper Vagabond

References

  1. ↑ "The KZ-III". Flight. L (1966): 215. 29 August 1946. Retrieved 2008-09-15.
  2. ↑ Bridgman, Leonard, ed. (1947). Jane's all the World's Aircraft 1947. London: Sampson Low, Marston & Co. p. 111c.

Further reading

  • Simpson, R. W. (1995). Airlife's General Aviation. Shrewsbury: Airlife Publishing. pp. 348–49. ISBN 1-85310-577-5.
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