If It Can Fly, It Can Float!!!

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Fleet Freighter
Building on their years of experience producing small single engine trainers, in 1936 Fleet decided to get into the bushplane market. After sending a questionnaire to bush pilots the company came up with a conventional fabric over steel frame biplane with a low wing loading for short takeoffs and good carrying capacity. The plane was designed to be a versatile platform with freight, passenger and military versions proposed as well as being capable of being easily outfitted with wheels, floats or skis. For ease of loading freight, large cargo doors were designed in.
The prototype first flew in February of 1938. 330 hp Jacobs radials were the intended engines but as they were not ready in time, 285 hp engines were substituted which left the aircraft underpowered. The larger engines, when fitted did not remedy the situation as the power was offset by the extra weight of the engines.
Only five were built and they were not well received, mostly to the power issues and the onset of WW2 put an end to the development program. Given different circumstances the plane might have been developed into a successful aircraft as it handled well and the basics were all there- it certainly looks the part of a bushplane.
All aircraft had short lives and the last was retired in 1946.
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Nardi F.N.333 Riviera
The FN.333 was of all-metal construction with a cantilever wing. The hull was built with nine watertight compartments, each of which could be separately inspected and drained. During the refinement of the airframe to production standards the thickness of the skinning was increased as a result of a change from metric gauges to American standards, resulting in a very robust airframe stressed to 8·5g.
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in this photograph of a Macchi-Castoldi M.C. 72 during an engine test, the surface-mounted oil coolers on the pontoons are visible.

The M.C. 72 was powered by a liquid-cooled, supercharged, 50.256 liter (3,066.805 cubic inch), Fiat S.p.A. AS.6 24-cylinder dual overhead cam 60° V-24 engine with 4 valves per cylinder and a compression ratio of 7:1. The engine produced 3,100 horsepower at 3,300 r.p.m. with 11.5 pounds of boost (0.79 Bar), and drove two counter-rotating two-bladed fixed pitch propellers with a diameter of 2.59 meters (8 feet, 6 inches) through a 0.60:1 gear reduction. Each counter-rotating blade cancelled the torque effect of the other. Surface radiators were placed on top of each wing and surface oil coolers on the floats. The Fiat AS.6 was 3.365 meters (132.48 inches) long, 0.702 meters (27.638 inches) wide, and 0.976 meters (27.64 inches) high. It weighed 930 kilograms (2,050 pounds).
he Macchi-Castoldi M.C.72 was designed by Ing. Mario Castoldi for Aeronautica Macchi-S.p.A. It was a single-place, single-engine, low-wing monoplane float plane constructed of wood and metal. It was 8.32 meters (27 feet, 3½ inches) long with a wingspan of 9.48 meters (31 feet, 1¼ inches) and height of 3.30 meters (10 feet, 10 inches).

The M.C.72 had an empty weight of 2,505 kilograms (5,523 pounds), loaded weight of 2,907 kilograms (6,409 pounds) and maximum takeoff weight of 3,031 kilograms (6,682 pounds).
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