Aero A.11
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The Aero A.11 was a biplane light bomber and reconnaissance aircraft built in Czechoslovakia between the First and Second World Wars. It formed the basis for many other Czechoslovakian military aircraft of the inter-war period. Around 250 were built, with some remaining in service at the outbreak of World War II.
Designed by Antonin Husnik, it was a development of the Aero A.12 (despite what the numbering of the designs might suggest). A Hispano-Suiza 8 Fb-powered version, the A.11H-s was built for the Finnish Air Force , the only foreign operator of the type. The Finns had eight aircraft of this type and used them between 1927 and 1939.
Replica Ab.11 in Prague Aviation Museum, Kbely
Variants
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A.11 : Two-seat light bomber, reconnaissance biplane.
A.11HS : Export version for Finland .
A.11N : Night bomber version.
Ab.11 : Light bomber version.
Aero Ab.11 L-BUCD
Operators
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Specifications (Ab.11)
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Data from Tschechoslowakische Flugzeuge : von 1918 bis heute[1]
General characteristics
Crew: 2
Length: 8.2 m (26 ft 11 in)
Wingspan: 12.8 m (42 ft 0 in)
Height: 3.1 m (10 ft 2 in) (A.11 }[citation needed ]
Wing area: 36.5 m2 (393 sq ft)
Empty weight: 1,080 kg (2,381 lb)
Gross weight: 1,588 kg (3,501 lb)
1,537 kg (3,389 lb) (A.11 }[citation needed ]
Powerplant: 1 × Breitfield-Danek Perun II 6-cylinder water-cooled in-line piston engine, 180 kW (240 hp)
176 kW (236 hp) Walter W.IV (A.11 }[citation needed ]
Propellers: 2-bladed fixed-pitch propeller
Performance
Maximum speed: 216 km/h (134 mph, 117 kn)
240 km/h (150 mph; 130 kn) (A.11 }[citation needed ]
Cruise speed: 190 km/h (120 mph, 100 kn)
Range: 750 km (470 mi, 400 nmi)
Service ceiling: 7,000 m (23,000 ft)
7,600 m (24,900 ft) (A.11 }[citation needed ]
Rate of climb: 3.82 m/s (752 ft/min) (A.11 }[citation needed ]
Time to altitude: 5,000 m (16,000 ft) in 19 minutes 30 seconds
Wing loading: 43.7 kg/m2 (9.0 lb/sq ft)
42 kg/m2 (8.6 lb/sq ft) (A.11 }[citation needed ]
Power/mass : 0.120 kW/kg (0.073 hp/lb) (A.11 }[citation needed ]
Armament
Guns: ** 1× forward firing .303 in (7.7 mm) Vickers machine gun (A.11 }[citation needed ]
2× .303 in (7.7 mm) Lewis machine gun in flexible mount for observer (A.11 }[citation needed ]
Bombs: 200 kg (441 lb) (A.11} }[citation needed ]
See also
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Related development
Aircraft of comparable role, configuration, and era
Related lists
References
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^ Tschechoslowakische Flugzeuge : von 1918 bis heute (in German and English) (1st ed.). Berlin: Transpress : VEB verlag fur Verkehrsween. 1987. pp. 166–167. ISBN 3344001213 .
External links
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Wikimedia Commons has media related to Aero A.11 .
Photo
drawings at Ugolok Neba site.