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ALPAERO

http://www.alpaero.com/

Choucas

 

Wing span :

14.35 m (47.1 ft), optional extension to 15 m

Length overall :

5.35 m (17.6 ft)

Height overall :

1.95 m (6.4 ft)

Propeller diameter :

1.60 m (5.3 ft)

Wing area :

21.30 m2 (229.3 sq ft)

Aspect ratio :

9.44:1

Weight empty :

FAI ultralight version : 265 kg (573 lb)
experimental version : 290 kg (639 lb)

Max T-O weight :

FAI ultralight version : 450 kg (992 lb)
experimental version : 510 kg (1124 lb)

Max wing loading :

FAI ultralight version : 21.12 kg/m2 (4.33 lb/sq ft)
experimental version : 23.94 kg/m2 (4.90 lb/sq ft)

 

Performance of the prototype, powered by a 503, at maximum take-off weight

Cruising speed at 75% power :

130 km/h (70 kt, 81 mph)

Max speed :

180 km/h ( 97 kt, 112 mph)

Stalling speed :

60 km/h (33 kt, 38 mph)

Max rate of climb :

180 m/mn (590 ft/mn)

T-O run :

100 m (328 ft)

Landing run :

150 m (492 ft)

Best glide ratio :

with a fixed propeller : more than 20:1
with a folding propeller :
24:1 (14.35 m version)

26:1 (15 m version + winglets)

Min rate of sink :

less than 1.00 m/s (3.28 ft/s) with a fixed propeller

G limits

+ 8 / -4 G