Eurowing Goldwing SP
Single-seat single-engined mid-wing mono-plane with conventional three-axis control. Wing has swept back leading and trailing edges, and tapering chord; no tail, canard wing. Pitch control by elevator on canard; yaw control by tip rudders; roll control by half-span up-only ailerons and spoilers; control inputs through stick for pitch/roll and pedals for yaw. Cantilever wing; main-wing profile, modified Liebeck; canard profile, GU25; both double-surface. Undercarriage has three wheels in tricycle formation; glassfibre suspension on all wheels, brakes on main wheels, fuselage totally enclosed. Push-right go-right nosewheel steering connected to yaw control. No brakes. Aluminium tube glassfibre fuselage. Engine mounted above wing driving pusher propeller. Composite-construction wing of foam and aluminium covered with glass-fibre skin.
While the Goldwing SP may look like nothing more than a Goldwing with an enclosed cockpit, in reality it is rather more than that. Not only is the fuselage differently constructed, using no aluminium except in the bulkhead, but the canard span is increased too. Together, these changes im-prove both fuel consumption and aesthetics.
There are other refinements too, such as nosewheel suspension and brakes on the mainwheels. Because of these alterations, the Goldwing SP is inherently heavier than its open counterpart, and is therefore not offered with the Robin engine. Standard engine for this machine is the Konig SC430, which in the form used by Eurowing develops 28 hp, 4 hp more than originally, thanks to redesigned pistons. The KFM 107 engine is an option. All Goldwing SPs, plus some later Goldwings, feature Eurowing's patented vibration-absorbing toothed-belt reduction drive.
Like the Goldwing from which it is developed, the SP is a Craig Catto design. However, unlike the open machine, the SP is made only by Eurowing - there is no factory-built US equivalent.
Engine: Konig SC430, 28hp.
Max static thrust 165 lb, 75 kg.
Length overall 12.0 ft, 3.66 m.
Height overall 7.5ft, 2.29m.
Wing span 30.0ft, 9.14m.
Chord at root 4.5ft, 1.37 m.
Chord at tip 3.0ft, 0.91m.
Canard span 12.0ft, 3.66m.
Canard chord 1.5 ft, 0.46 m.
Fin height 3.0 ft, 0.91 m.
Total wing area 148 sq.ft, 13.7 sq.m.
Main wing area 130 sq.ft, 12.1 sq.m.
Canard area 18 sq.ft, 1.7 sq.m.
Main-wing aspect ratio 6.9/1.
Wheel track 5.0 ft, 1.52 m.
Wheelbase 7.3 ft, 2.21 m.
Nosewheel diameter overall 14 inch, 36 cm.
Main wheels diameter overall 16 inch, 41 cm.
Power per unit area 0.19hp/sq.ft, 2.0hp/sq.m
-Fuel capacity 6.0 US gal, 5.0 Imp gal, 22.7 litre.
Empty weight 290 lb, 132kg.
Max take-off weight 540 lb, 245kg.
Payload 250 lb, 113kg.
Max wing loading 3.65 lb/sq.ft, 17.9kg/sq.m.
Max power loading 19.3 lb/hp, 8.8kg/hp.
Load factors; +6.5, -3.0 ultimate.
Max level speed 85 mph, 137 kph.
Never exceed speed 90 mph, 145 kph.
Max cruising speed 70 mph, 113 kph.
Economic cruising speed 50 mph, 80 kph.
Stalling speed 28 mph, 45 kph.
Max climb rate at sea level 700 ft/min, 3.6 m/s.
Min sink rate 180 ft/min at 35 mph, 0.9 m/s at 56 kph.
Best glide ratio with power off 16/1 at 45 mph, 72 kph.
Take-off distance 220 ft, 65 m.
Land-ing distance 160 ft, 50 m.
Range at average cruising speed 220 mile, 354 km.