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The Issoire Silène was a sailplane produced in France in the 1970s and early 1980s, intended primarily as a trainer. It was a conventional design of fibreglass construction in versions with fixed or retractable monowheel undercarriage. The aircraft featured side-by-side seating for two, with the seats slightly staggered in order to minimise fuselage width. French certification was obtained on 3 February 1978, and production began shortly thereafter at the rate of two aircraft per month.

CE 75, E 78, and I 79 Silène
Role Sailplane
National origin France
Manufacturer Siren, CERVA, Issoire
First flight 2 July 1974
Number built 6 by 1978

The original CE 75 design was refined as the E 78, which featured a redesigned and roomier cockpit, and was again available in fixed and retractable undercarriage versions. A further development, the I 79, was in development in 1979, and featured tanks for water ballast as well as hydraulically operated flaps, undercarriage, and airbrakes.


Specifications (CE 75 Silène)


Data from Jane's all the World's Aircraft 1976–77[1]

General characteristics

Performance

68 km/h (42 mph; 37 kn) (two seat with radio)
70.5 km/h (43.8 mph; 38.1 kn) (two seat with radio and oxygen equipment)
36 at 91.5 km/h (56.9 mph; 49.4 kn) (two seat with radio fixed mainwheel)
38 at 91.5 km/h (56.9 mph; 49.4 kn) (retractable mainwheel)
0.64 m/s (2.1 ft/s) at 91.5 km/h (56.9 mph; 49.4 kn) (two seat with radio)
0.67 m/s (2.2 ft/s) at 91.5 km/h (56.9 mph; 49.4 kn) (two seat with radio and oxygen equipment)
29 kg/m2 (5.9 lb/sq ft) (two seat with radio)
25 kg/m2 (5.1 lb/sq ft) (single seat)

References


  1. Taylor, John W.R., ed. (1976). Jane's all the World's Aircraft 1976–77 (67th ed.). London: Jane's Yearbooks. ISBN 0-3540-0538-3.
  2. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading





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