Paratech P Bi4
# 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.

## 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.

The aircraft's 15.20 m (49.9 ft) span wing has 58 cells, a wing area of 42 $m^2$ (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.

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

## Specifications (P Bi4)

Data from Bertrand

General characteristics

* Crew: one
* Wingspan: 15.20 m (49 ft 10 in)
* Wing area: 42 $m^2$ (450 sq ft)
* Aspect ratio: 5.5:1

Performance

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