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Thalhofer Bronco

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 elevator on tail; yaw control by fin-mounted rudder; roll control by half-span ailerons; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from below by struts; wing profile Worthmann FX63-137; double-surface. Undercarriage has three wheels in tricycle formation with additional tailskid; suspension on all wheels. Push-right go-right nose-wheel steering connected to yaw control. No brakes. Aluminium-tube framework, without pod. Engine mounted below wing driving pusher propeller.

An important manufacturer of hang-gliders, producing around 300 of these aircraft per year, Thalhofer produced its first microlight in 1976. Two prototypes of the Bronco were built and flew for the first time at the end of March 1983. Production got under way in 1983, after the certification of the model.

Length overall 18.7ft, 5.70m
Wing span 28.5 ft, 8.70 m
Constant chord 3.9 ft, 1.20 m
Sweepback 0 deg
Tailplane span 5.2ft, 1.60 m
Total wing area 114 sq.ft, 10.6 sq.m
Total aileron area 6.9 sq.ft, 0. 64 sq.m
Total fin and rudder area 16.4 sq.ft, 1.52 sq.m
Total tailplane and elevator area 17.2 sq.ft, 1.60 sq.m
Wing aspect ratio 7.1/1
Wheel track 5.9 ft, 1.80 m
Engine: Konig SC430, 25hp at 4200rpm
Propeller diameter 55 inch, 1.40 m
Belt reduction, ratio 1.8/1
Max static thrust 132 lb, 60 kg
Power per unit area 0.22 hp/sq.ft, 2.4 hp/sq.m
Fuel capacity 5.3 US gal, 4.4 Imp gal, 20.0 litre
Empty weight 221 lb, 100 kg
Max take-off weight 486 lb, 220 kg
Payload 265 lb, 120 kg
Max wing loading 4.24 lb/sq.ft, 20.7 kg/sq.m
Max power loading 19.4 lb/hp, 8.8 kg/hp
Load factors; +6.0, -3.0 ultimate
Max cruising speed 59 mph, 95 kph
Economic cruising speed 40mph, 65kph
Stalling speed 24mph, 40 kph
Max climb rate at sea level 400 ft/min, 2.0 m/s
Take-off distance 165 ft, 50 m
Landing distance 100 ft, 30 m

 

 


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