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Aircraft Development EZ-1 / EZ-2

A single-seat single-engined low-wing mono-plane with conventional three-axis control. Wing has unswept leading and trailing edges and constant chord; conventional tall. Pitch control by fully flying tail; yaw control by fully flying rudder. Control inputs through stick for pitch/roll and pedals for yaw. Cantilever wing; wing profile; double -surface. Undercarriage has three wheels in tricycle formation, main struts of unidirectional fiberglass. Aluminium-tube framework, without pod (EZ-1), with pod (EZ-2). Engine mounted above wing driving pusher propeller.

The EZ-1 makes use of aluminium sheets being used as the skin, bonded together by a double-sided adhesive tape developed in collaboration with 3M.

Price 1984: $3,500-$8,500. Certified to FAR Part 23 standards.

EZ-1
Engine: Zenoah G25B-1, 20 hp at 6500 rpm
Prop: P-tip, 50 x 20in
Power per unit area 0.19hp/sq.ft, 2.0hp/sq.m
Length overall 16.3 ft, 4.95 m
Height overall 6.8 ft, 2.05 m
Wingspan 26.0 ft, 7.92 m
Total wing area 106 ft, 9.9sq.m
Rudder area 10.3sq.ft, 0.95sq.m
Total elevator area 20.5 sq.ft, 1.90sq.m
Wing aspect ratio 6.4/1
Load factors; +9.0, -6.0 ultimate
Max level speed 53mph, 85kph
Economic cruising speed 42 mph, 67 kph
Stalling speed 27 mph, 43 kph
Max climb rate at sea level 375 ft/min, 1.9 m/s
Best glide ratio with power off 15/1

EZ-2
Engine: Zenoah G25B, 20 hp at 6500 rpm
Power per unit area 0.19hp/sq.ft, 2.0hp/sq.m
Length overall 16.3 ft, 4.95 m
Height overall 6.8 ft, 2.05 m
Wingspan 26.0 ft, 7.92 m
Total wing area 106 ft, 9.9sq.m
Rudder area 10.3sq.ft, 0.95sq.m
Total elevator area 20.5 sq.ft, 1.90sq.m
Wing aspect ratio 6.4/1
Load factors; +9.0, -6.0 ultimate
Max level speed 63mph, 101kph
Economic cruising speed 48 mph, 72 kph
Stalling speed 28 mph, 45 kph
Max climb rate at sea level 575 ft/min, 2.9 m/s
Best glide ratio with power off 15/1

 

 


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