Ultraflight Lazair

Lazair series
Ultraflight Lazair Series II
Role	ultralight personal, trainer aircraft and police observation aircraft
National origin	Canada
Manufacturer	Ultraflight Aircraft Sales
Designer	Dale Kramer
First flight	1978
Introduction	1979
Primary users	private owners Monterey Park Police Department
Produced	1979 -1984
Number built	more than 2000
Unit cost	USD$4600 (1983)
Variants	Blue Yonder EZ Fun Flyer

The Ultraflight Lazair is a family of Canadian designed and built twin-engine ultralight aircraft that were sold in kit form between 1979 and 1984.

With a total production of over 2000 aircraft delivered the Lazair series is the most produced Canadian-designed aircraft.

The designer of the Lazair, Dale Kramer, was an aeronautical engineering student at the University of Toronto when he attended the Oshkosh EAA convention in 1977. He was very impressed with the potential of the ultralight aircraft designs that he saw there and returned with a Superfloater glider kit. Convinced that improvements to the design were possible, Kramer started with a blank sheet of paper and designed a completely new aircraft, even going so far as to design a custom airfoil for it.

The design features a constant taper wing with a progressive and constant washout from root to tip. Combined with an airfoil that is cambered with concave portions on both the top and bottom surfaces, this produced an aircraft with optimized low-speed handling and very gentle stall characteristics. The wing is constructed from an aluminum "D" cell leading edge, foam ribs and an aluminum tubular trailing edge. The aircraft also featured some of the first winglets used on light aircraft.

The very long wing made the Lazair a good glider, giving it a 12:1 glide ratio, and it could be soared in even light thermal conditions.

Kramer named the aircraft “Lazair” as a contraction of “Lazy-Air”, a comment on the slow cruise speed of the aircraft, which was about 40 mph (64 km/h).

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