The Macchi M.6 was an Italian
flying boat
A flying boat is a type of fixed-winged seaplane with a hull, allowing it to land on water. It differs from a floatplane in that a flying boat's fuselage is purpose-designed for floatation and contains a hull, while floatplanes rely on fusela ...
fighter prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototyp ...
of 1917.
Design and development
In 1917,
Nieuport-Macchi built the M.6. for comparison with its
Macchi M.5
The Macchi M.5 was an Italian single-seat fighter flying boat designed and built by Nieuport-Macchi at Varese. It was extremely manoeuvrable and agile and matched the land-based aircraft it had to fight.Orbis 1985, page 2393
Development
The ...
flying boat fighter, which went into service that year and operated successfully over the
Adriatic Sea
The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) to t ...
against
Austro-Hungarian
Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of ...
forces during
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
. The M.6 was identical to the M.5 in most respects; like the M.5, it was a single-seat wooden
biplane
A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...
flying boat fighter with
plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured ...
and fabric skin, powered by a 139-
kilowatt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Wa ...
(187-
brake horsepower
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the ...
)
Isotta Fraschini
Isotta Fraschini () was an Italian luxury car manufacturer, also producing trucks, as well as engines for marine and aviation use. Founded in Milan, Italy, in 1900 by Cesare Isotta and the brothers Vincenzo, Antonio, and Oreste Fraschini, in 19 ...
V.4B engine mounted on struts above the
hull and below the upper
wing
A wing is a type of fin that produces lift while moving through air or some other fluid. Accordingly, wings have streamlined cross-sections that are subject to aerodynamic forces and act as airfoils. A wing's aerodynamic efficiency is expres ...
, driving a pusher
propeller
A propeller (colloquially often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon ...
. Its
cockpit
A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a Pilot in command, pilot controls the aircraft.
The cockpit of an aircraft contains flight instruments on an instrument panel, and the ...
was beneath the
radiator
Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in cars, buildings, and electronics.
A radiator is always a ...
, it was armed with a single 7.7-
millimeter
330px, Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales. The microwave is between 1 meter to 1 millimeter.
The millimetre (American and British English spelling differences#-re, -er, ...
(0.303-
inch
Measuring tape with inches
The inch (symbol: in or ″) is a unit of length in the British imperial and the United States customary systems of measurement. It is equal to yard or of a foot. Derived from the Roman uncia ("twelfth") ...
)
Vickers machine gun
The Vickers machine gun or Vickers gun is a Water cooling, water-cooled .303 British (7.7 mm) machine gun produced by Vickers Limited, originally for the British Army. The gun was operated by a three-man crew but typically required more me ...
, and its hull was of the same design. It differed from the M.5 in having a different wing cellule; instead of the interplane Vee struts used in the M.5 to brace the wings and the smaller Vee struts used in the M.5 to support the overhanging leading edge of the upper wing, the M.6 had parallel steel tube struts. The outermost of a set of parallel struts were placed farther outboard in the M.6 than the Vee struts in the M.5, and the M.6 had additional parallel struts closer to the hull.
Comparative trials were held between the M.6 prototype and standard M.5 aircraft to evaluate whether the M.6s revised wing cellule provided any advantage over that of the M.5 fighter. It did not, so further development of the M.6 was abandoned and no more M.6 aircraft were built.
[Green and Swanborough, p. 356-357.]
Operators
;
*
Corpo Aeronautico Militare
The Italian Corpo Aeronautico Militare (Military Aviation Corps) was formed as part of the Regio Esercito (Royal Army) on 7 January 1915, incorporating the Aviators Flights Battalion (airplanes), the Specialists Battalion (airships) and the Ballo ...
Specifications
Notes:
*Time to 4,000 m (13,123 ft): 20 min
See also
Notes
References
*Green, William, and Gordon Swanborough. ''The Complete Book of Fighters: An Illustrated Encyclopedia of Every Fighter Aircraft Built and Flown''. New York: SMITHMARK Publishers, 1994. .
{{Macchi aircraft
1910s Italian fighter aircraft
M.06
Aircraft first flown in 1917