Fulmar Ultralight Tiger / Bold / Jumbo
A tandem two-seat single-engined flex-wing aircraft with weight-shift control. Rogallo wing with keel pocket. Pilot suspended below wing in trike unit, using bar to control pitch and yaw/roll by altering relative positions of trike unit and wing. Wing braced from above by kingpost and cables, from below by cables; floating cross-tube construction with 85% double-surface not enclosing cross-tube; pre-formed ribs. Undercarriage has three wheels in tricycle formation; no suspension on any wheels. Push-right go-left nosewheel steering independent from yaw control. Optional brake on nosewheel. Aluminium-tube trike unit, without pod. Engine mounted below wing driving pusher propeller.
This two-seater trike unit was originally called the Tiger and is available with two different wings: the Bold wing, in production since 1981, and the more recent Jumbo wing. In April 1983, the complete assembly was renamed Jumbo. Our data refers to the later version.
The wing is foldable into a package 16.4 x 1. 3 x 1. 0 ft (5. 00 x 0. 40 x 0. 30 m) and the trike unit folds down to 6. 1 x 2.3 x 2.3 ft (2. 10 x 0. 70 x 0.70 m).
Length overall 13.2 ft, 4.00 m.
Height overall 9.1 ft, 3.00m.
Wing span 34.5ft, 10.50m.
Nose angle 130 deg.
Total wing area 205 sq.ft, 19.0 sq.m.
Wing aspect ratio 5.8/1.
Wheelbase 5.1 ft, 1.80 m.
Nosewheel diameter overall 12 inch, 30 cm.
Main wheels diameter overall 16 inch, 40 cm.
Engine: Hirth 2701R.
Max power 43hp at 6750rpm.
Propeller diameter and pitch 59 x 28 inch, 1.50 x 0.70 m.
Toothed-belt reduction, ratio 2.6/1.
Max static thrust 265 lb, 120 kg.
Power per unit area 0.21 hp/sq.ft, 2.3hp/sq.m.
Fuel capacity 4.0 US gal, 3.3 Imp gal, 15.0 litre in main tank; 7.9 US gal, 6.6 Imp gal, 30.0 litre in reserve.
Empty weight 287 lb, 130kg.
Max take-off weight 707 lb, 320kg.
Payload 420 lb, 190 kg.
Max wing loading 3.45 lb/sq.ft, 16.8kg/sq.m.
Max power loading 16.4 lb/hp, 7.4 kg/hp.
Max level speed 50 mph, 80 kph.
Never exceed speed 62 mph, 100 kph.
Max cruising speed 44 mph, 70 kph.
Economic cruising speed 40mph, 65kph.
Stalling speed 22 mph, 35 kph.
Max climb rate at sea level 500 ft/min, 2.5 m/s.
Min sink rate 344ft/min, 1.75m/s.
Take-off distance 82ft, 25m.
Landing distance 66 ft, 20 m.
Service ceiling 6560 ft, 2000 m.
Range at average cruising speed 62 mile, 100km.