موضوع عن اختراع بالانجليزي
تلفزيون الانترنت تعبير
عن الطائرة بالانجليزي برزنتيشن موضوع عن اختراع الطائرة بالانجليزي اختراع بسيط بالانجليزي موضوع عن اختراع بالانجليزي قصير تعبير انجليزي عن اي اختراع ثالث
متوسط تعبير او براجراف انجليزي عن الطائرة نص عن الطائرة انجليزي موضوع عن بالانقلش موضوع عن اختراع الطائرة بالانجليزي تعبير عن اختراع الطائرة بالانجليزي الطائرة موضوع عن الطائرة بالانقلش من هو مخترع الطائرة موضوع صغير وحلو سهل عن الـ -
مواضيع انجليزي سهله وبسيطه
- مدرستي بحث عن الطائرة باللغة الانجليزية الكمبيوتر, تعبير
عن اختراع الطائرة بالانجليزي برجراف عن الطائرة بالانجليزى مترجم بحث عن الطائرة باللغة الانجليزية خاتمه عن الطائرة بالانجليزي برجراف عن مميزات وعيوب الطائرة بحث عن اهمية الطائرة فى حياتنا اليومية باللغة الانجليزية برجراف عن الطائرة والانترنت باللغة الانجليزية بحث عن الطائرة باللغة الانجليزية للصف الثانى الاعدادى موضوع عن الطائرة بالانجليزي مترجم بالعربي برجراف باللغة الانجليزية عن الطائرة تعبير عن invention برجراف عن الاختراعات الحديثة
بالانجليزي تعبير عن اختراع الطائرة بالانجليزي
اختراع الطائرة تقرير عن plane
للصف العاشر الامارات من هو مخترع الطائرة
موضوع عن
الطيران بالانجليزي
Invention (plane موضوع عن اختراع الطائرة بالانجليزي تعبير عن اختراع الطائرة
بحث عن اختراع الجوال باللغه
الانجليزيه تعبير عن الطائرة بالانجليزي اختراع بالانجليزي تعبير عن اختراع السيارة بالانجليزي اختراع بسيط بالانجليزي
تعبير بالانجليزي عن السفر
بالطائرة موضوع عن الطائرة قصير ما معنى كلمة plane
The
invention of the plane (1890)
Clément
Agnès Ader, a French engineer and brilliant inventor, is considered one of the
fathers of aviation. However, he is far from being the only one to have
contributed to the development of the plane, machine that revolutionized the
military art as much as the civil transport. Alberto Santos Dumont, the Wright
brothers and Otto Lilienthal were some of those who transformed in a few years
a simple utopia into a breathtaking reality: the man could finally challenge
nature and fly.
The
origins of aeronautics
Observing
the flight of birds, Leonardo da Vinci imagined from the sixteenth century the
concept of the propeller, parachute and Helicopter and glider. The only driving
force usable at the time being that of the muscles of man, these great ideas
will long remain in the state of concept. Moreover, the physiologist and
Italian physicist Giovanni Borelli concludes in 1680 that the man was unable to
fly by his own means: the inventors then turned to the design of lighter weight
craft than the air, like the Montgolfier brothers who made the first hot air
balloon fly in 1783.
Montgolfier
First Flight The history of aviation was a turning point at the beginning of
the 19th century, thanks to progress in the fields of construction and
mechanics. It was again considered to fly heavier craft than air, replacing the
muscular strength of man by the driving force of a machine. Many experiments
were then carried out to try to perfect the flying machines, and thus to obtain
a better understanding of the flight of a machine. the British George Cayley
states the principles of what will become aviation. Research, very active,
succeeds v. 1840 at the first flight of a model steam airplane.
The
beginnings of flying men and the invention of the plane
Clément
Ader's work on systems allowing men to fly started during the War of 1870,
during which he tried to develop for the army kites capable of flying a man. In
vain. His collaboration with the military did not stop: Ader found there a
source of funding and support for his research, complementary to his own
fortune that he owed to many inventions patented by him.
His
efforts eventually paid off: between 1890 and 1897 he made three prototypes:
the Aeolus (the Plane), the Zephyr (Ader Avion II) and the Aquilon (Ader Avion
III). From 50 meters for the first test, the flying distance was increased to
300 meters with the Avion 3, before a military committee which did not lose a
crumb. Very observant of nature, Ader is inspired by bat wings for his sails
and even incorporates mechanisms capable of modifying their structure once in
flight.
At
the same time a certain Otto Lilienthal manages to develop a glider capable of
flying 400 meters once launched from a hill 20 meters high. His prototypes were
made from bamboo ribs covered with cotton.
Let
us not forget the feats of Brazilian aviation pioneer Alberto Santos-Dumont,
who built many balloons and airships on which he flew, as well as an aircraft,
the 14 Bis, on which he approved the first aviation world record, October 23,
1906.
The
Wright brothers invent the first powered aircraft
Aircraft
of the Wright Brothers
If
Ader was the inventor of the aircraft, as we have just seen, the brothers
Orville and Wilbur Wright succeeded, after multiple prototypes of gliders, to
succeed the first motorized and controlled flight of an aircraft (heavier than
air), in 1903.
They
are also the first to have correctly analyzed the mechanics required for the
turn in flight and to have developed the control of the trajectory. From 1905,
their planes make it possible to carry out stable flights, of long duration and
with a perfect mastery of the turns. Their models are called the Flyer I, II
and III: object of covetousness of the US Army, they will inspire most biplanes
engaged during the First World War.
Some
other key dates of aviation
•
1909 - French airman Louis Blériot crosses the Channel of Calais to Dover
aboard his "Blériot XI"
•
•
1911 - Roland Garros breaks the altitude world record: 3910 meters (4
September)
•
1914 - On October 5th, German Lieutenant Von Zangen's Aviatik was shot down
near Reims by Sergeant Frantz's Voisin III and Corporal Quenault, the first
aerial combat
•
1927 - May 21, Lindbergh crosses the Atlantic
•
1930 - First transatlantic postal link 12 May, by French airman Jean Mermoz
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