Dufaux 5
Encyclopedia
The Dufaux 5 is a two-seat airplane built by French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...
-Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....
aviation pioneers Henri
Henri Dufaux
Henri Dufaux was a Swiss painter.-References:*This article was initially translated from the German Wikipedia....
and Armand Dufaux
Armand Dufaux
Armand Dufaux was a Swiss aviation pioneer who became famous for flying the length of Lake Geneva in 1910.He and his brother, Henri Dufaux were natives of Geneva...
.
Construction and development
After Armand DufauxArmand Dufaux
Armand Dufaux was a Swiss aviation pioneer who became famous for flying the length of Lake Geneva in 1910.He and his brother, Henri Dufaux were natives of Geneva...
had flown over the Geneva
Geneva
Geneva In the national languages of Switzerland the city is known as Genf , Ginevra and Genevra is the second-most-populous city in Switzerland and is the most populous city of Romandie, the French-speaking part of Switzerland...
for its entire length with the Dufaux 4
Dufaux 4
-References:* *...
on 28 August 1910,and the world record by Louis Blériot
Louis Blériot
Louis Charles Joseph Blériot was a French aviator, inventor and engineer. In 1909 he completed the first flight across a large body of water in a heavier-than-air craft, when he crossed the English Channel. For this achievement, he received a prize of £1,000...
was significantly exceeded, Armand and his brother Henri
Henri Dufaux
Henri Dufaux was a Swiss painter.-References:*This article was initially translated from the German Wikipedia....
produced the first aircraft in Switzerland. In the months after the record flight of 28 August 1910, the Dufaux brothers undertook numerous other flights and participated with other flight pioneers - including Emile Taddéoli
Emile Taddéoli
Emile Taddéoli was a Swiss aviation pioneer. He was active as a pilot, instructor, test pilot, and also the probably most prominent pioneer using seaplanes in Switzerland...
(1879–1920), flying boat
Flying boat
A flying boat is a fixed-winged seaplane with a hull, allowing it to land on water. It differs from a float plane as it uses a purpose-designed fuselage which can float, granting the aircraft buoyancy. Flying boats may be stabilized by under-wing floats or by wing-like projections from the fuselage...
Pioneer until 1920,chief pilot of the later Ad Astra Aero
Ad Astra Aero
Ad Astra Aero was a Swiss airline.-Time of the pioneers:Initiated by Oskar Bider and Fritz Rihner, in July 1919 the «Schweizerische Gesellschaft für Lufttourismus» was established in Zürich...
who brought them to the United States. Previously they had received a considerable number of orders for those days that they intended to comply with the successor of experimental aircraft
Experimental aircraft
An experimental aircraft is an aircraft that has not yet been fully proven in flight. Often, this implies that new aerospace technologies are being tested on the aircraft, though the label is more broad....
.
The record-breaking Dufaux 4 probably appreciated his powerful designers too little, as it provided space for only the pilot.The Dufaux 5 was designed by the brothers as Dufaux double. The Dufaux 5 was designed based on the experience of Dufaux 4 and the remaining nameless model 2 with eight wings.The basic division of Dufaux 4 has been substantially expanded by one seat for a passenger and the Anzani aircraft engine
Aircraft engine
An aircraft engine is the component of the propulsion system for an aircraft that generates mechanical power. Aircraft engines are almost always either lightweight piston engines or gas turbines...
was replaced by the 91-kilogram Gnome
Gnome et Rhône
Gnome et Rhône was a major French aircraft engine manufacturer. Between 1914 and 1918 they produced 25,000 of their 9-cylinder Delta and Le Rhône 110 hp rotary designs, while another 75,000 were produced by various licensees, powering the majority of aircraft in the first half of the war on...
70 Seven-cylinder-rotary engine
Rotary engine
The rotary engine was an early type of internal-combustion engine, usually designed with an odd number of cylinders per row in a radial configuration, in which the crankshaft remained stationary and the entire cylinder block rotated around it...
supplying 53 kW(70 hp)of power. Otherwise, the aircraft differed little from similar structures from the pioneering years of aviation engine. The supporting structure of Dufaux 4 appears as the same total length, wing span and unchanged height, while the performance is increased despite the increased launch weight. The previously two ailerons between the wings was increased to four, arranged on the rear end of the wings as in today's designs.
Use
The biplane was manufactured from December 1910, in the company Mégevet, Corsier (where the Dufaux brothers had completed their initial flight tests) .The total number of manufactured aircraft should be at least 15 copies(including Dufaux 4) but it needs to be clarified.The Swiss army had already rejected using the Dufaux 4 in May 1910 ,since their charge for military use seemed inappropriate.The now much improved Dufaux 5 led Ernest Failloubaz
Ernest Failloubaz
Ernest Failloubaz was a Swiss aviation pioneer. He received the pilot's brevet number 1 issued in Switzerland on October 11, 1910, and did the first flight in Switzerland of an aircraft built and flown by Swiss citizen.- Life :Ernest Failloubaz' father Jules, a rich wine merchant, died when Ernest...
(1892–1919), the youngest pilot in Switzerland (who was 19 years of age at that time), to fly it. From 4 to 6 September 1911, before the Army leadership as observers in the maneuvers of the 1st Army Corps reconnaissance missions, he flew with his friend Gustave Lecoultre.There was a crash landing on the last day of the three-day operation of these flights to begin the Swiss military aviation.
Dufaux was used from October 1911 at the Flight School founded by Emile Taddéoli in Viry,near Geneva. Ernest Failloubaz may have been the first owner of a Dufaux 5. He had ordered Dufaux 5 from the flight school in Avenches
Avenches
Avenches is a Swiss municipality in the canton of Vaud, located in the district of Broye-Vully.-History:The roots of Avenches go back to the Celts...
in November 1910, with which he has already conducted a test flight in the presence of Armand Dufaux ,followed by an unknown number of passenger flights in the first half of January 1911. Armand Dufaux increased the production to 16 until 18 April at the air show at Viry in part, where he showed the airplane to the interested ones. A flight demonstration by Emile Taddéoli in Annecy
Annecy
Annecy is a commune in the Haute-Savoie department in the Rhône-Alpes region in south-eastern France.It lies on the northern tip of Lake Annecy , 35 kilometres south of Geneva.-Administration:...
crashed in Geneva, without any harm to humans and machines, and the flight demonstrations continued till July 1911. Presumably, from this point, the Aircraft Production has been discontinued by the brothers Dufaux, but three Dufaux aircraft were produced in Avenches, probably in the autumn of 1911.
Among the especially popular among owners of Dufaux 5 are Armand Dufaux, Emile Taddéoli, Ernest Failloubaz, François Durafour (1888–1967), Cobioni and Beck. Charles Girod, Georges Cailler, Gustave Lecoultre, Hollinger, Beck and Knutti received flying lessons in the flight school of their chief pilot Durafour at Avenches in the course of 1911. The model was used in the School of Failloubaz probably at least until 1916.
Technical Data
| bgcolor = "#DDDDDD" |Dufaux 5
| bgcolor = "#DDDDDD" |Dufaux 4 >
Wingspan
The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...
Ceiling
A ceiling is an overhead interior surface that covers the upper limit of a room. It is generally not a structural element, but a finished surface concealing the underside of the floor or roof structure above....
Variants and whereabouts
As an alternative to the Gnome rotary engines , Oerlikon four-cylinder aircraft engineAircraft engine
An aircraft engine is the component of the propulsion system for an aircraft that generates mechanical power. Aircraft engines are almost always either lightweight piston engines or gas turbines...
s were also used. Currently, the whereabouts of Dufaux 4, the oldest surviving Swiss aircraft known is issued only in the Museum of Transport
Museum of Transport
Museum of Transport can refer to:*Glasgow Museum of Transport*Birmingham and Midland Museum of Transport*Museum of Transportation, St. Louis, Missouri*Museum of Transport in Manchester, UKSee also:*List of transport museums...
.