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Wills Wings Swallowtail / Super Swallowtail
 
WillWngs-Swalotail
Swallowtail
 
The Swallowtail was designed to be a high performance glider with the parachuting abilities of a standard. It features battens at the wingtips for chord extension. Seated or prone cable set-ups came as standard equipment. Quick release turnbuckle allows the kingpost to be dropped without undoing the turnbuckle. A wide control bar is fitted.
 
All tubing is 6061-T6 anodised aluminium. The main frame is 1.5in x 0.049, sleeving is 1 5/8in x 0.058 and the control bar legs and kingpost are 1ib x 0.065. Bushings are 2024-T3 aluminium tubing.
 
Flying wires are 3/32in 7 x 7 cable, and kingpost and wing wires are 5/64in 7 x 7 cable; all stainless steel.
 
All nuts and bolts at AN grade aircraft quality. Kingpost tangs, noseplates and wingposts are specially made from aluminium.
The sail is Howe and Baibridge 3.8oz or 4.5oz stabilised dacron, doube zig-zag stitched with non-rot V-46 polyester thread. It was available in 10 colours.
 
Seated or prone harness were optional.

 

The 1975 Super Swallowtail is a swept wing, high aspect ratio, high performance Rogallo. It has a cambered S-keel, very low billow, and anhedral in the crossbar. The wing tips are roached and have fibreglass foam tapered battens to accomplish the chord extension without any of the problems of a rigid tip. Double wingposts curve the leading edges. They, along with the light billow and sail roach, maintain perfect washout control in the SST. It is easy to pull out of a dive, and can be flown hands off for minutes at a time, even in turbulent air, returning to straight and level flight.

 

Sup-Swaltail
Super Swallowtail
 

 

Seated and prone cable set-ups came as standard on the Super Swallowtail. A quick release turnbuckle allows the kingpost to be dropped without undoing. All tubing is 6061-T6 anodised aluminium. The main frame is 1.5in x 0.049, sleeving is 1 5/8in x 0.058 and the control bar legs and kingpost are 1in x 0.065. Bushings are 2024-T3 aluminium tubing.
 
 
The flying wires are 3/32in 7x7 cable, and kingpost and wingpost wires are 5/642 7x7, all stainless steel. All nuts and bolts are AN grade aircraft quality. Kingpost tangs, noseplate and wingposts are specially made from aluminium. The sail is made from Howe & Bainbridge 3.8-4.5o stabilised dacron, double zig-zag stitched with non-rot V-46 polyester thread, in ten colour choices.
 
Swallowtail 19 x 19
Leading edge: 19 ft
Keel length: 19 ft
Wing span: 26.9 ft
Wing area: 190 sq,ft
Aspect ratio: 3.81
Nose angle: 90˚
Sail billow: 3.1˚
Weight: 42 lb
Pilot weight: 100-150 lb
Takeoff speed: 10 mph
Stall speed: 16 mph
Max speed: 45 mph
Best glide ratio (L/D): 6-1
Best L/D speed: 31 mph
Min sink: 396 fpm
 
Swallowtail 20 x 20
Leading edge: 20 ft
Keel length: 20 ft
Wing span: 28.2 ft
Wing area: 227 sq,ft
Aspect ratio: 3.52
Nose angle: 90˚
Sail billow: 3.1˚
Weight: 43 lb
Pilot weight: 140-195 lb
speed: 10 mph
Stall speed: 16 mph
Max speed: 45 mph
Best glide ratio (L/D): 6-1
Best L/D speed: 31 mph
Min sink: 396 fpm
 
Swallowtail 21 x 20
Leading edge: 21 ft
Keel length: 20 ft
Wing span: 29.8 ft
Wing area: 240 sq,ft
Aspect ratio: 3.7
Nose angle: 90˚
Sail billow: 3.1˚
Weight: 44 lb
Pilot weight: 185-240 lb
speed: 10 mph
Stall speed: 16 mph
Max speed: 45 mph
Best glide ratio (L/D): 6-1
Best L/D speed: 31 mph
Min sink: 396 fpm
 
Swallowtail 22 x 20
Leading edge: 22 ft
Keel length: 20 ft
Wing span: 31.1 ft
Wing area: 260 sq,ft
Aspect ratio: 3.72
Nose angle: 90˚
Sail billow: 3.1˚
Weight: 45 lb
Pilot weight: 230-280 lb
Takeoff speed: 10 mph
Stall speed: 16 mph
Max speed: 45 mph
Best glide ratio (L/D): 6-1
Best L/D speed: 31 mph
Min sink: 396 fpm
 
Super Swallowtail 100M
Leading edge: 20 ft
Keel length: 15 ft
Wing span: 31.1 ft
Wing area: 165 sq,ft
Aspect ratio: 5.87
Nose angle: 100.5˚
Sail billow: 1.9˚
Weight: 42 lb
Pilot weight: 100-145 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 8-1
Best L/D speed: 22 mph
Min sink: 220 fpm
 
Super Swallowtail 100C
Leading edge: 21 ft
Keel length: 15 ft
Wing span: 32.6 ft
Wing area: 182 sq,ft
Aspect ratio: 5.85
Nose angle: 100.7˚
Sail billow: 1.8˚
Weight: 43 lb
Pilot weight: 120-160 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 8-1
Best L/D speed: 22 mph
Min sink: 220 fpm
 
Super Swallowtail 90
Leading edge: 22 ft
Keel length: 16 ft
Wing span: 32 ft
Wing area: 189 sq,ft
Aspect ratio: 5.42
Nose angle: 91.1˚
Sail billow: 2.3˚
Weight: 44 lb
Pilot weight: 140-175 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 8-1
Best L/D speed: 22 mph
Min sink: 220 fpm
 
Super Swallowtail 100B
Leading edge: 22 ft
Keel length: 16 ft
Wing span: 34.7 ft
Wing area: 200 sq,ft
Aspect ratio: 6.0
Nose angle: 101.3˚
Sail billow: 1.5˚
Weight: 44 lb
Pilot weight: 155-200 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 8-1
Best L/D speed: 22 mph
Min sink: 220 fpm
 
Super Swallowtail 100A
Leading edge: 22 ft
Keel length: 16 ft
Wing span: 34.6 ft
Wing area: 212 sq,ft
Aspect ratio: 5.71
Nose angle: 100.9˚
Sail billow: 1.7˚
Weight: 45 lb
Pilot weight: 190-220 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 8-1
Best L/D speed: 22 mph
Min sink: 220 fpm
 
Super Swallowtail 100P
Leading edge: 22 ft
Keel length: 16 ft
Wing span: 37 ft
Wing area: 220 sq,ft
Aspect ratio: 6.22
Nose angle: 110˚
Sail billow: 1.5˚
Weight: 50 lb
Pilot weight: 210-250 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 8-1
Best L/D speed: 22 mph
Min sink: 220 fpm

 

WillWngs-Swalotail-ld
Swallowtail

 

Wills-SST-ld
Super Swallowtail

 

 

 
 


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