Louis
Blériot
Louis Bleriot graduated with a
degree in Arts and Trades from Ecole Centrale Paris. After
successfully establishing himself in the business of
manufacturing automobile headlamps, at age 30 he began his
lifelong dedication to aviation. In 1907 he made his first
flight at Bagatelle, France, in an aircraft of his own
design, teaching himself to fly while improving his design
by trial and error. In only two years his new aviation
company was producing a line of aircraft known for their
high quality and performance.
Louis
Bleriot achieved world acclaim by being the first to fly an
aircraft across the English Channel, a feat of great daring
for those times. On July 25, 1909, in his Model X125
horsepower monoplane, he braved adverse weather and 22 miles
of forbidding sea and flew his machine from Les Barraques,
France to Dover, England. This 40 minute flight won for him
the much sought after London Daily Mail price of 1000 pounds
sterling.
In the
1914-1918 War his company produced the famous S.P.A.D.
fighter aircraft flown by all the Allied Nations. His
exceptional skill and ingenuity contributed significantly to
the advance of aero science in his time, and popularized
aviation as a sport. He remained active in the aero industry
until his death on August 2, 1936.
The
Flight
First
Channel Crossing by Air
At the first
light of dawn on the morning of July 25, 1909, Frenchman,
Louis Blériot gave his crew the signal to release his small
wood and fabric Model XI aeroplane. It crossed the grassy
paddock and bounded into the air crossing the cliffs at
Sangatte France, near Calais, and ventured out over the
English Channel. Travelling at just over 40 miles per hour,
and at an altitude of about 250 feet, the little monoplane
out-paced its naval escort ship, the Escopette, which
carried his wife Alicia. Within minutes Blériot was on his
own over the channel and due to weather conditions could not
see either coast for part of the flight. Finally, thirty-six
minutes after his departure, fighting dangerous cliff-side
gusts, Blériot put down on English soil near Dover Castle.
It must have been a dramatic scene for the small group of
on-lookers as his plane dodged several brick buildings, was
tossed about in the wind, and as Blériot cut the motor the
craft dropped into a grassy field smashing the propeller and
undercarriage. His daring effort had landed him the coveted
Daily Mail Prize of 1,000 Pounds Sterling.
Thirty-six
minutes was not one of the longer flights of 1909. There had
been a number of duration and distance records considerably
longer, but no one had yet successfully crossed the channel.
Record flights were typically conducted over earth, and not
water, so that when problems occurred (and they usually did)
one could set down in a field or on a road. Fellow aviator
Hubert Latham attempted the cross the Channel just days
earlier (July 19th) and had ditched his Antoinette IV in the
channel when his motor quit.
1909 aircraft
were extremely unreliable -- the hobby of visionaries and
wealthy eccentrics. Most were under-powered and the engines
were prone to failure for one reason or another. Aircraft
design was more of an art than a science, and control
systems were still being invented. There were no airborne
radios to call for help, and flight instrumentation was
limited.
The day had
begun badly and if Blériot had been a superstitious man he
probably wouldn’t have taken off. He could walk only with
the aid of crutches, having burned his foot in an earlier
incident. During preparation for takeoff a neighbourhood dog
had wandered into the arc of his propeller blade and was
killed. His wife did not share his enthusiasm for flight and
had begged him not to go. Once in the air his Anzani 3
cylinder motor overheated, as motors of that day were prone
to do. Fortunately, luck was on Blériot’s side that day and
rain showers cooled the motor enabling him to complete the
crossing.
A channel
crossing is a non-event today, but in 1909 this half-hour
flight captured the world's attention. Transcontinental
travel was suddenly possible and the protective barrier
between England and the European continent disappeared. The
British newspapers warned that airplanes flying over the
Channel could also be used as instruments of war. "Britain's
impregnability has passed away...Airpower will become as
vital as seapower," one London newspaper trumpeted.
Considering Britain’s status as the world’s leading military
power, these headlines were arresting.
Louis Bleriot (R) and observers and his Model XI after
Channel crossing and rough landing.
Louis Bleriot:
Trial and Error
Bleriot was first attracted to the problem of flight when he
visited the 1900 Paris Exhibition and saw Clement Ader's
strange bat-wing contraption, the Avion No.III. As a
result, he built his own bat-wing aeroplane, but unlike
Ader's his had flapping rather than fixed wings.
Unsurprisingly, it was not a success and flapped itself to
pieces on the ground.
Then, in 1905, Bleriot became acquainted
with the Voisin brothers, Charles and Gabriel, who had built
several Wright-inspired gliders for prominent Aero-Club
de France member, Ernest Archdeacon. Their latest model
was fitted with floats for towing behind a motor boat on the
River Seine. Louis Bleriot commissioned them to build a
similar machine for himself. It had a wide biplane tail,
connected by side-curtains to form a box-kite, short stubby
wings connected by more side-curtains, and a monoplane
forward elevator. Long floats stretched from the elevator
back to the tail. He had realised that he still had a lot to
learn about flight before he could hope to build a powered
machine. Hopefully the glider experiments would solve the
problem of aerial stability. A motor could then be added and
powered flight attempted. Both gliders were tested by
Gabriel Voisin on the Seine near Paris. They both rose from
the water, but yawed, dipped and dropped their wings
dangerously. Both were damaged by striking the water while
out of control. Fortunately the pilot was uninjured and
bravely continued with the tests each time the machines were
reconstructed. The problem was that the machines only had
one flying control: a front elevator. They relied on their
own, very imperfect, inherent stability to keep straight and
level. The tests continued into 1906 and the third Bleriot-Voisin
glider was fitted with an Antoinette petrol engine.
(The Antoinette had also powered the motor boat.) But
whether it was flown on floats or on wheels as a land plane,
the design remained a failure.
the third Blériot-Voisin glider with Antoinette engine in
1906
When the gliders
met with no success, Bleriot decided to pursue his own ideas
once more. Unlike most other experimenters of the day, he
was particularly attracted to the idea of the monoplane.
After Santos-Dumont's
successful flights of 1906 he knew flight was a real
possibility, and thus encouraged he built a tail-first
monoplane, influenced by Dumont's tail-first 14-bis.
It was christened the Canard ('duck') because its
long 'neck' stretched out in front like a duck in flight.
(Since then, all tail-first aeroplanes have been known as
canards.) Its wings were covered with varnished paper and it
was powered by a 24 h.p. Antoinette. It was first
tested at Bagatelle on 21 March 1907, and on 5 April Bleriot
made a flight of 5 to 6 yards. He made further short hops at
Issy on 8 and 15 April but the machine was basically too
fragile and was destroyed in a crash on 19 April. Bleriot
was unhurt.
The Blériot Canard of 1907 at Bagatele. The pilot seems to
be testing the wing warping: left wing is down and the right
wing up
Unlike the Wrights or Otto Lilienthal,
Louis Bleriot did not take a careful, scientific approach to
the problem of flight, testing and refining each component
until a good machine was arrived at. Instead he impulsively
jumped from one concept to another until he found something
that worked. It was the philosophy of trial and error, and
it was something of a miracle that Bleriot survived the
numerous early crashes that this method entailed. He always
tested his own machines.
After the crash of 19 April he abandoned
the canard and built a plane along the lines pioneered by
the American, Professor Langley. It had two sets of wings,
the one behind the other, and was called the Libellule
('butterfly'). The front set of wings had a form of aileron
fitted that Bleriot would return to in later designs: the
wing tips could be swivelled on pivots to change the angle
at which they met the air. However, they worked
independently and were not connected to each other, as
modern ailerons are. There was no elevator. Bleriot
established longitudinal stability by moving his body weight
on a sliding seat! The Libellule was more successful
than the Canard. At Issy it managed 25 yards on 11
July 1907, and then 160 yards on 25th, and 150 yards on 6
August. Finally, on 17 September, Bleriot climbed to a
height of 60 feet, but he lost control and the machine
plunged to the ground. It was destroyed, but again Bleriot
was fortunate in not being seriously hurt.
The Blériot Libellule of 1907.
It was flown briefly during the summer
Bleriot's third plane in one year was of a type that came to
be the standard layout for monoplanes up to the present day.
That is to say the engine was at the front near the wings,
with the rudder and elevator at the rear on a long tail. The
main undercarriage wheels were under the engine and there
was a smaller wheel towards the tail. This was completely
revolutionary in 1907. But by inspired guesswork, Bleriot
had hit on a winning formula. All his future aeroplane
designs were variations on this theme. The first of these
ground-breaking machines was the sixth aeroplane Bleriot had
built (including gliders) and so it was simply called
No.VI. It was doubly innovative because, in addition to
its layout, it had a completely covered fuselage and no
external bracing wires - giving it a very modern appearance.
It flew 80 yards with a 20 h.p. engine, in November, before
crashing.
the prophetic
Blériot VI, also of 1907
In the new year, 1908, Bleriot built
another, No.VII, which similarly crashed, and then
another, No.VIII, which met the same fate! These
planes were covered with rice paper to keep weight to a
minimum. Bleriot's tenacity and enthusiasm sprang from his "passion
for the problems of aviation" - his own words for his
devotion to flying. And his persistance was paying
off. His new machines were generally better than their
predecessors and in No.VIII he flew for 800 yards at
Issy. This machine had a 50 h.p. Antoinette, and good
controls, including large 'modern' ailerons on the trailing
edge of the wing. On a modified version, the VIII-bis,
Bleriot accomplished the second cross-country flight from
town to town, on 31 October 1908, the day after Henry Farman
had achieved the first! However, Bleriot succeeded in flying
back to his starting point, making it the first return
cross-country in Europe. The flight was made from Toury to
Artenay.
Apart from getting the shape of his
aeroplanes right, another great achievement of Louis Bleriot
was in designing the modern control system. He linked the
ailerons and elevator together so that they were both worked
from a central 'joystick', while rudder control was via a
bar at the pilot's feet. If Bleriot wanted to climb, he
pulled the stick back. If he wanted to yaw right, he pushed
his right foot forward. If he wanted to bank left, he moved
the stick left. This is exactly how modern control systems
work. By contrast, the Wright brothers had linked their
wing-warping (in place of ailerons) to the rudder. This was
logical, but was not copied.
The Blériot VIII-bis near Dambron during 31 Oct 1908 cross
country flight from Toury to Artenay. The wing-tip ailerons
are clearly visible.
The little Frenchman made another first,
on 12 June 1909, when he became the first pilot to take two
passengers up at the same time. The others in the plane with
him were Alberto Santos-Dumont
and Andre Fournier.
After crashing No.IX and No.X,
Bleriot was facing bankruptcy when he took his
No.XI to the
cliffs at Calais to try and win the £1000 prize for flying
across the English Channel. His fortune had nearly all been
consumed in his passion for aviation. He needed this flight
to succeed.
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