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Tradewinds Gliders TW-21
 
Tradew-TW21
 
Circa 1972, the TW-21 is a fixed wing that has full three axis control, ailerons, rudder and elevators.
 
Stressed for 4.5G, all tubing is 6061-T6 seamless aircraft aluminium. Sizes from 5/8in to 1 5/8 in is used. Rigging cable is 3/32in 7x7 and 1 5/8 x .049 is used. All fittings and joints are heli-arc welded.
 
All bolts, nuts, turnbuckles, pulleys and brackets are aircraft quality. The sail options were 3.0 or 5.8 oz dacron, with a choice of 10 colours. All seams and stress areas are double zig-zag stitched and reinforced.
 
The TW-21 has fully adjustable seat harness and ground support straps, and an optional prone harness was available.
 
The control system and control stick are machined steel and welded.
 
Chord length: 4 ft 9 in
Wing span: 32 ft
Aspect ratio: 6.85
Nose angle: 0˚
Wing area: 153 sq,ft
Weight: 55 lb
Pilot weight: 110-220 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 12:1
Best L/D speed: 26 mph
Min sink: 185 fpm
Chord length: 4 ft 9 in
Wing span: 34 ft
Wing area: 154.5 sq,ft
Aspect ratio: 7.55
Nose angle: 0˚
Weight: 71 lb
Pilot weight: 110-250 lb
Takeoff speed: 12 mph
Stall speed: 14 mph
Max speed: 45 mph
Best glide ratio (L/D): 12:1
Best L/D speed: 26 mph
Min sink: 185 fpm
 
Tradew-TW21-ld
 
 
 
 
 


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