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Airwave K3 / K4 / K5
Whereas the K2 is the successor to the Kiss, the 1993 K3, K4 and K5 are in fact different sizes of the same model of glider, the successor to the K2.
The series of K is the declination in different surfaces of the same wing. The K5: 13.8sq.m; The K4: 14.4 sq.m; The K2: 13,47 sq.m and the K3 is the most area. This does not seem very logical in terms of classification but these wings were designed on different dates, which may partly explain the codifications.
The K4 has erased the difficulties of the KISS: spiral instability, Dutch roll at high speed, high sensitivity in strong conditions. It lost some of the KISS's exemplary maneuverability. The K4 is a homogeneous wing, stable spiral, with better finesse, in short a very good wing of a top quality at the time.
K3 160
K4 155
Wing area: 14,4 m²
Wing span: 10,25 m
Aspect ratio: 7.3
Hang glider weight: 29 kg
Minimum pilot weight: 65 kg
Maximum pilot weight: 95 kg
Minimum speed: 24 km/h
Maximum speed: 89 km/h
Packed length: 5.5 m
Number of battens: 26
Nose angle: 132°
K5 144
K5 138
Wing area: 13.8 m²
Wing span: 9.8 m
Aspect ratio: 7.1
Minimum pilot weight: 55 kg
Maximum pilot weight: 86 kg
Nose angle: 132°

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