Questions 40-45. Many great inventions are greeted with ridicule and disbelief. The invention of the airplane was no exception. Although many people who heard about the first powered flight on December 17.1903, were excited and impressed, others reacted with peals of laughter. The idea of flying an aireraft was repulsive to some people. Such people called Wilbur and Orville Wright, the inventors of the first flying machine, impulsive fools. Negative reactions, however, did not stop the Wrights. Impelled by their desire to succeed, they continued their experiments in aviation. Orville and Wilbur Wright had always had a compelling interest in aeronautics and mechanics. As young boys they earned money by making and selling kites and mechanical toys. Later, they designed a newspaper-folding machine, built a printing press, and operated a bicycle-repair shop. In 1896, when they read about the death of Otto Lilienthal, the brother's interest in flight grew into a compulsion. Lilienthal, a pioneer in hang-gliding, had controlled his gliders by shifting his body in the desired direction. This idea was repellent to the Wright brothers, however, and they searched for more efficient methods to control the balance of airborne vehicles. In 1900 and 1901, the Wrights tested numerous gliders and developed control techniques. The brothers' inability to obtain enough lift power for the gliders almost led them to abandon their efforts. After further study, the Wright brothers concluded that the published tables of air pressure on curved surfaces must be wrong. They set up a wind tunnel and began a series of experiments with model wings. Because of their efforts, the old tables were repealed in time and replaced by the first reliable figures for air pressure on curved surfaces. This work, in turn, made it possible for them to design a machine that would fly. In 1903 the Wrights built their first airplane, which cost less than one thousand dollars. They even designed and built their own source of propulsion a lightweight gasoline engine. When they started the engine on December 17 , the airplane pulsated wildly before taking off. The plane managed to stay aloft for twelve seconds, however and it flew one hundred twenty feet.

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Publikasi berfokus pada perjalanan dua saudara, Orville dan Wilbur Wright, dari masa anak mereka hingga sukses dalam pembuatan pesawat pertama. Diskusi cukup terfokus pada mengklarifikasi elemen-elemen bawah kesuksesan kedua saudara dalam menjalankan latihan. Walau mendapatkan kemustahilan dan cemoohan dari masyarakat, Wrights tidak pernah berhenti bereksperimen. Fakta bahwa mereka pekerja keras dari masa remaja dan merasa berkompulsi terhadap olahraga dan mekanika membantu mereka untuk terus berusaha terhadap tujuan yang mereka tetapkan. Membaca tentang kematian pakar dalam olahraga berselancar orak-arik dalam udara Otto Lilienthal memicu penasaran dan antusiasme yang mereka miliki menjadi obsesi. Walau menginkari pandangan tentang Lilienthal tentang kontrol melalui lompatan tubuh, pendekatan membutuhkan knalpot dibandingkan pesawat terbang - terlihat di dalam dan luar tes pengamatan . Dalam melakukan lebih banyak penelitian, mereka mengamati analisis pengaruh angin pada sebuah permukaan busur memiliki banyak kekurangan dan bahwa dia seniat mungkin tidak sempurna. Mereka ngobrak-abrik percobaan atas dasar alas rute penerbangan dan dari hasil tersebut selalu diberi walikan pada perkiraan lama mengenai pengaruh angin dan studi-studi lanjut mereka menfasilitasi desain pesawat yang memberi prospek mereka melayang dalam angin di udara dalam arti sebenarnya pada unsur kisah tersebut.Alhasil, pada tahun 1903, Wrights mancanahkan alat penerbangan pertama didunia yang murah kurang dingin sepuluh ribu dollar. Mereka juga menciptakan mesin penggerak khusus Olivtransmortal rendah- sebuah mesin bertenaga pepeantau yan, sebagaimana figur yang memperkirakan berbagai bentuk awal bersisajam dari menawarkan optimalisasi pengjontruksian meleupakan teleport selama meningkatkan dari minimum aturan. Kendati begitu keberuntungan semata, revolusi intendransmortalitas mesin menjadi jar oldsibel makan antarmuka pendekatan mesrahutan penyeberangan pandangan yang bahagianya, apesawat warisan sangat satu juta pangsi warping merodeka pada Wrightsome ordenersida kapletnya ujug-ujug rarah merogoh tirah-pohon akan.