Swift S-1

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

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 1991-1997
Number built 30 (+ proof of concept glider)
Developed from SZD-21 Kobuz

Design and development

Edward Margański, Jerzy Cisowski 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.

Specifications

Data from [1]

General characteristics

  • Crew: 1
  • Length: 6.91 m (22 ft 8 in)
  • Wingspan: 12.7 m (41 ft 8 in)
  • Wing area: 11.8 m2 (127 sq ft)
  • Tailplane area: 1.65 m2 (17.8 sq ft)
  • Fin area: 0.9 m2 (9.7 sq ft)
  • Aspect ratio: 14.3
  • Airfoil: NACA 641412
  • Tailplane airfoil: NACA 631012-63006
  • Fin airfoil: NACA 632015-63012
  • Empty weight: 280 kg (617 lb)
  • Gross weight: 390 kg (860 lb)

Performance

  • Never exceed speed: 320 km/h (200 mph, 170 kn) diving
  • Maximum manoeuvring speed: 228 km/h (142 mph; 123 kn)
  • g limits: +10 g / - 7.5 g
  • Maximum glide ratio: 30:1 at 107 km/h (66 mph; 58 kn)
  • Rate of sink: 0.9 m/s (180 ft/min)
Swift S-1
  • Swift concludes its aerobatic display at Old Warden, England
  • 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

Comparable aircraft
gollark: I'm entirely accepting of moral standards which are reasonably reciprocal toward my own set and which don't do anything horrible.
gollark: Nihilism would be "nothing matters" or something.
gollark: We *will* destroy all plants.
gollark: Orbital nature lasers are already warming up.
gollark: And this seems too vaguely defined to be useful if you can just handwave any issue which does not in fact run on something like "balance" as being caused by some other imbalance.

References
  1. ""SWIFT" S-1". marganski.com. Retrieved 30 January 2019.
  2. "Swift S-1". www.sagach.ch (in German). Retrieved 30 January 2019.

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