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The Chengdu X-7 Jian Fan (English: Sword Point) (X-7 - Xianji-7 - glider-7) is a Chinese basic trainer glider. First flying in 1966, at least 130 were built.

X-7 Jian Fan
Role	Basic training glider Type of aircraft
National origin	People's Republic of China
Manufacturer	Chengdu Sailplane Factory
First flight	October 1966
Number built	130+

Design and development

The Chengdu X-7 is a two-seat basic training glider of glass-fibre construction, which first flew in October 1966. It is a high-winged monoplane with the wing braced to the pod-and-boom fuselage by single struts. The crew of two sit in tandem open cockpits, while the undercarriage is a non-retractable monowheel, with nose- and tailskids.[1] 130 had been built by 1980.[2]

Specifications (X-7)

Data from Jane's All The World's Aircraft 1988–89[2]

General characteristics

• Crew: two, pilot and student
• Length: 7.06 m (23 ft 2 in)
• Wingspan: 13.07 m (42 ft 11 in)
• Height: 1.60 m (5 ft 3 in)
• Wing area: 18.00 m² (193.8 sq ft)
• Aspect ratio: 9.5:1
• Airfoil: Göttingen 535 (modified)
• Empty weight: 220 kg (485 lb)
• Max takeoff weight: 370 kg (816 lb)

Performance

• Stall speed: 45 km/h (28 mph, 24 kn)
• Never exceed speed: 150 km/h (93 mph, 81 kn) in smooth air

100 km/h (54 kn; 62 mph) in rough air

80 km/h (43 kn; 50 mph) on winch launch

• g limits: +4 -2
• Maximum glide ratio: 12:1
• Rate of sink: 1.40 m/s (276 ft/min) at 53 km/h (29 kn; 33 mph)
• Wing loading: 20.55 kg/m² (4.21 lb/sq ft) at max t/o weight

Notes

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