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Delta Wing Kites Phoenix / Mariah

Phoenix Mariah M-9
Early in 1977, Bennett asked Boone to design a new high performance Phoenix variant intended for experienced pilots. They named it the Mariah, and it introduced several radical features. The most significant change was yet another increase in aspect ratio. Wingspan increased and wing chord fell as the leading edge convergence angle grew to 120 degrees. Boone also incorporated wires supported by short posts along the wing leading edges. By applying tension to the wires, the pilot could deflect the wing to improve flying and stall characteristics. The wing was more responsive to pilot control inputs, but it was not as stable as previous gliders in the Phoenix line. Bennett and Boone believed that competent, experienced pilots could handle the high-performance wing with no trouble.
By 1982, the Phoenix X, in three sizes had, according to Bill Bennett, “unbelievable handling”.
Phoenix X
Phoenix D
Phoenix X
Nose angle: 130°
Double surface: 63%
Mariah M-9
Wingspan: 11.4 m (37 ft 5 in)
Length: 2.5 m (8 ft 4 in)
Empty weight: 25 kg (55 lb)
Gross weight: 122 kg (270 lb)






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