Sidou João Grande
The Sidou João Grande, was a two-seat sailplane of high-wing.[1]
| Sidou João Grande | |
|---|---|
| Role | Sailplane |
| National origin | Brazil |
| Manufacturer | Sidou |
| Designer | Antônio Sidou |
| First flight | 1980 |
Design and development
The João Grande was designed by Antônio Sidou of Porto Alegre in the state of Rio Grande do Sul, this Brazilian tandem two-seater is intended for primary and advanced training and Open Class contest flying. It is a cantilever midwing monoplane similar to the Embraer EMB 400 Urupema in appearance but with a T-tail and cambered wing tips, of all-wooden construction with plywood covering and abrasion-resistant plastics finish; it is designed for aerobatics and cloud flying.
There are Schempp-Hirth air brakes on the upper and lower surfaces of the wing, which has long span ailerons and a dihedral of 3° 36'.
Specifications
Data from Taylor 1986, p. 586
General characteristics
- Crew: 2
- Length: 9 m (29 ft 6 in)
- Wingspan: 18 m (59 ft 1 in)
- Height: 2.52 m (8 ft 3 in)
- Wing area: 12.96 m2 (139.5 sq ft)
- Airfoil: Wortmann FX-61-184 (modified) at root, FX-60-126 (modified) at tip
- Empty weight: 270 kg (595 lb)
- Max takeoff weight: 450 kg (992 lb)
Performance
- Maximum speed: 300 km/h (190 mph, 160 kn)
- Stall speed: 69 km/h (43 mph, 37 kn)
- g limits: +9.75/-6.00
- Maximum glide ratio: 43:9 at 95 km/h (59 mph)
- Rate of sink: 0.57 m/s (112 ft/min) at 81 km/h (50 mph)
- Wing loading: 34.72 kg/m2 (7.11 lb/sq ft)
See also
Aircraft of comparable role, configuration, and era
Notes
- Taylor 1981, p. 586
References
- Taylor, John W. R. (1981). Jane's All The World's Aircraft 1980–81. London: Sampson Low, Marston & Company, Ltd.