In a way, Louis Bleriot ranks before Farman in point of time; his
first flapping-wing model was built as early as 1900, and Voisin flew
a biplane glider of his on the Seine in the very early experimental
days. Bleriot’s first four machines were biplanes, and his fifth, a
monoplane, was wrecked almost immediately after its construction.
Bleriot had studied Langley’s work to a certain extent, and his sixth
construction was a double monoplane based on the Langley principle. A
month after he had wrecked this without damaging himself--for Bleriot
had as many miraculous escapes as any of the other fliers--he brought
out number seven, a fairly average monoplane. It was in December
of 1907 after a series of flights that he wrecked this machine,
and on its successor, in July of 1908, he made a flight of over 8
minutes. Sundry flights, more or less successful, including the first
cross-country flight from Toury to Artenay, kept him busy up to the
beginning of November, 1908, when the wreckage in a fog of the machine
he was flying sent him to the building of ‘number eleven,’ the famous
cross-channel aeroplane.
Number eleven was shown at the French Aero Show in the Grand Palais
and was given its first trials on the 18th January, 1909. It was first
fitted with a R.E.P. motor and had a lifting area of 120 square feet,
which was later increased to 150 square feet. The framework was of oak
and poplar spliced and reinforced with piano wire; the weight of the
machine was 47 lbs. and the undercarriage weight a further 60 lbs.,
this consisting of rubber cord shock absorbers mounted on two wheels.
The R.E.P. motor was found unsatisfactory, and a three-cylinder Anzani
of 105 mm. bore and 120 mm. stroke replaced it. An accident seriously
damaged the machine on June 2nd, but Bleriot repaired it and tested it
at Issy, where between June 19th and June 23rd he accomplished flights
of 8, 12, 15, 16, and 36 minutes. On July 4th he made a 50-minute
flight and on the 13th flew from Etampes to Chevilly.
[Illustration: Blériot crossing the Channel.]
A few further details of construction may be given: the wings
themselves and an elevator at the tail controlled the rate of ascent
and descent, while a rudder was also fitted at the tail. The steering
lever, working on a universally jointed shaft--forerunner of the modern
joy-stick--controlled both the rudder and the wings, while a pedal
actuated the elevator. The engine drove a two-bladed tractor screw of
6 feet 7 inches diameter, and the angle of incidence of the wings was
20 degrees. Timed at Issy, the speed of the machine was given as 36
miles an hour, and as Bleriot accomplished the Channel flight of 20
miles in 37 minutes, he probably had a slight following wind.
Public-domain text, read in full here on John Shaqi.
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