
Описание
Страна: Франция
Год: 1919
Единственный экземпляр
Варианты
- Voisin - Triplane - 1915 - Франция
- Voisin - E.28 - 1919 - Франция
- J.Davilla, A.Soltan French Aircraft of the First World War (Flying Machines)
- Журнал Flight
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J.Davilla, A.Soltan - French Aircraft of the First World War /Flying Machines/
Voisin E.28. The aircraft retained the same wing used on the 1915 triplane. The E.28 was powered by four 220-hp Hispano 8Bc engines.
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J.Herris - Weird Wings of WWI /Centennial Perspective/ (70)
The Voisin E.28 triplane heavy bomber prototype of 1916 used the wings from the 1915 Voisin heavy bomber. Using four 220 hp Hispano-Suiza engines, it had less power than its predecessor. It is unclear how it was supposed to have adequate performance with less power. The rudder was suspended between the fuselage and an auxilliary boom. The E.28 was another high-drag, low-performance design that was also a failure.
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Журнал - Flight за 1919 г.
Side View of the 1916 Voisin Bombing Triplane
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J.Davilla, A.Soltan - French Aircraft of the First World War /Flying Machines/
This view of the Voisin E.28 emphasizes the double fuselage; a design intended to increase the aircraft's structural strength.
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J.Davilla, A.Soltan - French Aircraft of the First World War /Flying Machines/
Voisin E.28 Triplane at Issy-les-Moulineaux on 29 May 1919.
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Журнал - Flight за 1919 г.
Close-up view of the four Hispano-Suiza engines on the 1916 Voisin bombing triplane.
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Журнал - Flight за 1919 г.
THE VOISIN BOMBING TRIPLANE: Plan, side and front elevations to scale, of the modified type constructed in 1916
J.Davilla, A.Soltan French Aircraft of the First World War (Flying Machines)
Voisin E.28
The Voisin 1915 triplane had been a failure, but this did not prevent Voisin from developing the layout further. He elected to adopt it for his 1916 bomber.
In December 1916 he had opened study E.28 for a four-man triplane armed with two cannons. It retained the wing used on the 1915 triplane. The new aircraft, labeled Triplane No.2, was powered by four 220-hp Hispano-Suiza 8Bc engines. Reportedly, four 250-hp Salmson engines were initially planned, but were not fitted. The engines were mounted in tandem in nacelles for each pair in the middle wing. The undercarriage was redesigned and had four wheels beneath the lower wing and individual wheels beneath each of the engine nacelles. A single nosewheel was mounted on a prominent strut extending forward. The fuselage had a circular cross-section, and an enlarged boom extended from the top wing to the rudder. The rudder was mounted between the fuselage and top boom and the tailplane at the upper third of the rudder. The wing size decreased from top to bottom, and there were ailerons on the top wing only. There was a crescent-shaped rudder, two triangular sails (one ahead of the rudder and the other emerging from the upper fuselage) and a sweptback horizontal stabilizer. Unlike the 1915 design, the bottom wing was suspended below the fuselage. A Hotchkiss 37-millimeter cannon was to be mounted in the front cockpit. The main cabin had two pilots and was located between the two front engines. It was found that the pilot's field of vision was greatly reduced in this location. Another gunner with a Hotchkiss cannon was to be located behind the cockpit. Of most interest was the beam suspended above the fuselage and passing from the top wing to the tail surfaces. The space between the two fuselages was triangular and was quite rigid. This apparently was the reason Voisin chose this unique layout. A gunner was located in the upper fuselage, where he would have had an unimpeded field of fire.
Obsolete even by the standards of 1916, the E.28 was apparently not completed until 1919, when flight testing began. It was not selected for production.
There was an additional design based on the 1916 bomber. It was for a triplane intended to carry 12 passengers. It was to have carried 740 kilograms of fuel and to have had an endurance of three hours. It was never built.
E.28 Four-Seat Heavy Bomber with Four 220-hp Hispano-Suiza 8Bc Engines
Span 35.40 m (other sources say 36 and 37 m); length 21.80 m; height 5.80 m; wing area 200 sq. m
Loaded weight 6,500 kg
Maximum speed: 125 m/h at 2,000 m; climb to 2000 m in 25 minutes 30 seconds
Armament (proposed): two 37-mm Hotchkiss cannons
One built
Voisin E.50
The E.50 triplane was a project initiated in May 1917, to be powered by four 230-hp Hispano-Suiza engines. It was to be used as a heavy bomber and had five gun turrets (one of the first uses of covered gun positions in an aircraft). There was a single gun in the nose, a second beneath the forward fuselage, a third beneath the rear fuselage, a fourth behind the wings, and a fifth firing to the rear in the top fuselage. To reach the rear gun the crew had to climb a ladder three meters to the top fuselage. The overall configuration was similar to the E.28 triplane. However, unlike the E.28, the E.50 was never built and remained a project only.
E.50 Heavy Bomber Project with Four 230-hp Hispano-Suiza Engines
Empty weight 3507 kg; loaded weight 7,618 kg; payload 1,000 kg
Maximum speed: 131 km/h at 4000 m; climb to 4000 m in 30 minutes; endurance 7 hours
Voisin E.53
The Voisin E.53 was an attempt to adopt the unsuccessful E.28 triplane bomber to the ground attack (S) role. It was intended to fit it with one or more cannons, but the end of the war led to cancellation of the project. It is likely that the conversion was never completed and as far as can be determined, the E.28 never was fitted with cannons.
Voisin Triplane Flying Boat
In 1917 it was reported that the Voisin firm was considering building a triplane flying boat to have four 200-hp Hispano-Suiza engines. It was almost certainly intended to fill the French "high seas" flying boat category. That specification called for a large seaplane with a crew of four, T.S.F. long-range wireless, a 75-mm cannon with 30 rounds, two machine guns, 120 kg of bombs, 140 km/h maximum speed, climb to 2,000 m in 25 minutes, and an endurance of eight hours.
The Voisin design was to have either a single hull or twin hulls similar to the Labourdette-Hallbron seaplane. As far as can be determined, the aircraft was never completed because of the end of the war.
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