Firebird Choice Zip Bi

The Choice Zip Bi was designed as a tandem glider for flight training and as such the Bi designation indicates "bi-place" or two seater.^[1]

The "Zip" name indicates that a zipper is included in the wing to reduce wing area when required.^[1]

The aircraft's 14.2 m (46.6 ft) span wing has 54 cells, a wing area of 54 m² (580 sq ft) and an aspect ratio of 4.95:1. The pilot weight range is 110 to 180 kg (243 to 397 lb). The glider is DHV 1-2 Biplace certified.^[1]

Data from Bertrand^[1]

General characteristics

• Crew: one
• Capacity: one passenger
• Wingspan: 14.2 m (46 ft 7 in)
• Wing area: 54 m² (580 sq ft)
• Aspect ratio: 4.95:1
• Maximum speed: 44 km/h (27 mph, 24 kn)
• Rate of sink: 1.2 m/s (240 ft/min)