Scheibe Uli I

Single-seat single-engined high-wing monoplane with conventional three-axis control. Wing has unswept leading and trailing edges and constant chord; conventional tail. Pitch control by fully flying tail; yaw control by fully flying rudder; roll control by half-span ailer-ons; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from above by kingpost and cables; wing profile double-surface. Undercarriage has two wheels side-by-side with tailskid (three wheels in tricycle formation optional); glass-fibre tails-kid and glass-fibre suspension on main wheels. No brakes. Steel-tube framework, with optional pod. Engine mounted below wing driving pusher propeller. Wings use two aluminium tubes as spars, with ribs in foam, capped top and bottom with wood; all flying surfaces covered in Ceconite.

The prototype of the single-seater Uli microlight flew for the first time at the end of 1982 and was shown at Aero 83 Salon at Friedrichshafen. At Aero 83 the Uli I was given a pod, as an option, and a tailwheel had replaced the tailskid. This machine uses welded steel tubes for the framework.

Length overall 18.0ft, 5.50m
Wing span 31.8 ft, 9.70 m
Constant chord 4.4 ft, 1.33 m
Sweepback 0 deg
Tailplane span 7.2 ft, 2.20 m
Total wing area 140 sq.ft, 13.0 sq.m
Wing aspect ratio 7.2/1
Wheel track 4.6 ft, 1.40 m
Engine: Hirth 383cc, 22 hp at 4000 rpm
Propeller diameter 51 inch, 1.30 m
Belt reduction, ratio 1.88/1
Power per unit area 0.16 hp/sq.ft, 1.7 hp/sq.m
Fuel capacity 5.3 US gal, 4.4 Imp gal, 20.0 litre
Empty weight 221 lb, 100kg
Max take-off weight 442 lb, 200kg
Payload 221 lb, 100 kg
Max wing loading 3.25 lb/sq.ft, 15.9 kg/sq.m
Max power loading 20.1 lb/hp, 9.1kg/hp
Load factors; +6.0, -3.0 ultimate
Max level speed 50mph, 80kph
Never exceed speed 56mph, 90kph
Max cruising speed 37mph, 70kph
Economic cruising speed 30mph, 48kph
Stalling speed 27 mph, 43 kph
Max climb rate at sea level 400 ft/min, 2.0 m/s
Min sink rate 310 ft/min at 35 mph, 1.6 m/s at 56 kph
Best glide ratio with power off 9/1
Take-off distance 150ft, 45m
Landing dis-tance 100 ft, 30 m
Range at average cruising speed 112 mile, 180km