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By late in World War I, developments in aircraft technology made older bomber designs unable to penetrate targets defended by modern fighters. Caproni's response to this problem was to significantly uprate the power on the existing Ca.3 design, with some versions of the Ca.5 eventually carrying engines with nearly five times the total power that the first Ca.1 had.
Apart from greater power, various refinements were made to the design, including modifications to the main nacelle and undercarriage, and completely new wings. The first prototype flew in late 1917 and the type remained in production until 1921. Some 659 of all versions were built by Caproni, and another three were licence-built in the US (two Ca.44s by Standard, and one Ca.46 by Fisher). Plans for licence production in France did not eventuate.
During the war, Caproni designated these aircraft according to the total power of their engines. Afterwards, the company redesignated these designs.
Three-engine biplane of a wooden construction, covered with fabric. Crew: 4 in an open central nacelle (front gunner, two pilots and rear gunner-mechanic). The rear gunner manned upper machine guns, standing upon the central engine in a protective "cage", just before a propeller. Tricycle landing gear.
Armament: 2 to 4 Revelli 6.5mm or 7.7mm machine guns: 1 in front ring mounting and 1, 2 or sometimes even 3 in an upper ring mounting. Bombs suspended under the hull.
Related development:
Ca.1 - Ca.2The Caproni Ca. 2 was an Italian heavy bomber of the World War I era. Development The Ca. 2 was a minor development of the Caproni Ca. It had become evident early in the Ca. 1's service life that the design could benefit from more power. Caproni therefore - Ca.3Comparable aircraft:
Designation sequence:
Ca.1 - Ca.2The Caproni Ca. 2 was an Italian heavy bomber of the World War I era. Development The Ca. 2 was a minor development of the Caproni Ca. It had become evident early in the Ca. 1's service life that the design could benefit from more power. Caproni therefore - Ca.3 - Ca.4The Caproni Ca. 4 was an Italian heavy bomber of the World War I era. Development After designing the succesful Caproni Ca. 3 heavy bomber, Gianni Caproni of the Caproni works designed a much bigger aircraft. It shared the unusual layout of the Caproni Ca -Ca.5
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