Paratech P Bi4

The Paratech P Bi4 is a Swiss two-place paraglider that was designed by Uwe Bernholz and produced by Paratech of Appenzell. It is now out of production.[1]

P Bi4
Role Paraglider
National origin Switzerland
Manufacturer Paratech
Designer Uwe Bernholz
Status Production completed

Design and development

The P Bi4 was designed as a tandem glider for flight training and as such was referred to as the Bi4, indicating "bi-place" or two seater.[1]

The aircraft's 15.20 m (49.9 ft) span wing has 58 cells, a wing area of 42 m2 (450 sq ft) and an aspect ratio of 5.5:1. The crew weight range is 140 to 225 kg (309 to 496 lb). The glider is DHV 1-2Bipl certified.[1]

The wing design includes "Permanent Air Flow", a feature by which the cell openings are made smaller to improve the leading edge profile.[1]

Specifications (P Bi4)

Data from Bertrand[1]

General characteristics

  • Crew: one
  • Wingspan: 15.20 m (49 ft 10 in)
  • Wing area: 42 m2 (450 sq ft)
  • Aspect ratio: 5.5:1

Performance

  • Maximum speed: 44 km/h (27 mph, 24 kn)

References
  1. Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 26. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X
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