Swift S-1

Swift S-1
Swift S-1
Role Aerobatic glider
Manufacturer Swift Ltd.
Designer Edward Marganski and Jerzy Cisowski
First flight 6 August 1991 (proof of concept glider: 11 January 1991)
Primary users Jerzy Makula
see European and World Glider Aerobatic Championships for further users
Produced 1991-
Number built 30 (+ proof of concept glider)
Developed from SZD-21 Kobuz

The Swift S-1 is a single seat aerobatic glider manufactured by polish company Swift Ltd.

Contents

Design and development

Edward Margański and Jerzy Makula developed the Swift at Bielsko-Biała from the SZD-21-2b Kobuz 3.[1][2] The prototype first flew in 1991.

The glider is made of glass-fibre epoxy composite. It is very strong (stressed for plus and minus 10g) and manoeuvrable (a roll takes 4 seconds). Larger tips are available to increase the span to 15m. It has a retractable undercarriage.

Swift concludes its aerobatic display at Old Warden, England
Swift S-1 of the Swift Aerobatic Display Team at Kemble, England, in 2009
The Swift Aerobatic Display Team at Kemble Battle of Britain Weekend 2009. A Swift S-1 is performing continuous rolls while towed by a Piper Pawnee

Specifications

Data from[citation needed]

General characteristics

  • Crew: 1
  • Length: 6.91 m (22 ft 8 in)
  • Wingspan: 12.7 (41 ft 8 in)
  • Height: ()
  • Wing area: 11.8 m2 (127 sq.ft.)
  • Airfoil: NACA 641412
  • Aspect ratio: 14.3
  • Empty weight: 280 kg (617 lb)
  • Loaded weight: 390 kg (860 lb)

Performance

  • Maximum speed: 287 km/h (178 mph)
  • sink rate: 0.9 m/s (177 ft/s)
  • glide ratio: 30.0 (at 127 km/h)
  • Tail area: 1.65 m²
  • Tail airfoil: NACA 631012-63006
  • Vertical Empennage Area: 0.9 m²
  • Vertical Empennage Airfoil: NACA 632015-63012
  • Manoeuver Speed Va: 228 km/h
  • Diving Speed Vd: 320 km/h
  • Max Lift/Drag Ratio: 30.0 @ 107 km/h
  • Minimum Speed: 73 km/h
  • Load Factors: +10 g / - 7.5 g

See also

Comparable aircraft

References

  1. ^ Margański & Mysłowski: Swift S-1 - accessed 2008-03-20
  2. ^ Swiss Aerobatic Gliding Association: Swift S-1 (in German) - accessed 2008-03-20

External links


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