Aero A.11

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Aero A.11
Role	Light bomber Reconnaissance aircraft Type of aircraft
Manufacturer	Aero Vodochody
First flight	1925
Introduction	1920s
Retired	1940s
Primary users	Czech Air Force Finnish Air Force
Number built	~250

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 8Fb-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.

Variants[edit]

• A.11 : Two-seat light bomber, reconnaissance biplane.
• A.11HS : Export version for Finland.
• A.11N : Night bomber version.
• Ab.11 : Light bomber version.

Operators[edit]

 Czechoslovakia

• Czechoslovak Air Force

 Finland

• Finnish Air Force

Specifications (Ab.11)[edit]

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[edit]

Related development

• Aero A.21
• Aero A.22
• Aero A.25
• Aero A.29
• Aero A.125

Aircraft of comparable role, configuration, and era

• Letov Š-6
• Macchi M.15

Related lists

• List of interwar military aircraft

References[edit]

External links[edit]

Wikimedia Commons has media related to Aero A.11.

• Photo
• drawings at Ugolok Neba site.

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