The Romance of Aeronautics: An Interesting Account of the Growth & Achievements of All Kinds of Aerial CraftSeeley, Service & Company, limited, 1912 - 305 σελίδες |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
accident adventures aerial navigation aeronautical aeroplane aerostat airship altitude Andrée angle apparatus ascended attempt aviation meeting aviator ballast balloonist became biplane bird Blériot Blon Brothers Captain carried caused centre Channel CHAPTER contrivance cylinder danger Delagrange descend direction dirigible balloon distance driven earth effect engine envelope escape experiments famous flew flying machine France French Gabriel Voisin gas-envelope gliding Gnome Gnome motor Grahame-White ground guide-rope gust height Henry Farman hill horizontal idea inventor journey killed kite landing later Léon Delagrange Lilienthal London Louis Blériot mechanical flight miles per hour minutes monoplane Montgolfier occasion Orville Wright parachute Paris passengers Paulhan petrol Pilcher piston planes possible prize propeller realised remarkable rising rope rudder sailing Santos-Dumont seen sensation side Simplon Pass soaring soon speed square feet surface tail tion took turn upwards velocity vessel Voisin voyage Wilbur Wright wind wings Wright Brothers Zeppelin
Δημοφιλή αποσπάσματα
Σελίδα 219 - That it may please thee to preserve all that travel by land or by water, all women labouring of child, all sick persons, and young children; and to shew thy pity upon all prisoners and captives; We beseech thee to hear us, good Lord.
Σελίδα 173 - It would not be considered at all safe for a bicycle rider to attempt to ride through a crowded city street after only five hours...
Σελίδα 172 - The balancing of a gliding or flying machine is very simple in theory. It merely consists in causing the center of pressure to coincide with the center of gravity. But in actual practice there seems to be an almost boundless incompatibility of temper which prevents their remaining peaceably together for a single instant, so that the operator, who in this case acts as peacemaker, often suffers injury to himself while attempting to bring them together.
Σελίδα 171 - ... the engineer as well. Men also know how to build engines and screws of sufficient lightness and power to drive these planes at sustaining speed. Inability to balance and steer still confronts students of the flying problem, although nearly ten years 1 have passed. When this one feature has been worked out, the age of flying machines will have arrived, for all other difficulties are of minor importance.
Σελίδα 171 - The difficulties which obstruct the pathway to success in flying-machine construction are of three general classes: (1) Those which relate to the construction of the sustaining wings; (2) those which relate to the generation and application of the power required to drive the machine through the air; (3) those relating to the balancing and steering of the machine after it is actually in flight.
Σελίδα 181 - We had taken up aeronautics merely as a sport. We reluctantly entered upon the scientific side of it. But we soon found the work so fascinating that we were drawn into it deeper and deeper.
Σελίδα 196 - When preparations had been completed a wind of only three or four miles was blowing — insufficient for starting on so short a track — but since many had come a long way to see the machine in action, an attempt was made. To add to the other difficulty, the engine refused to work properly. The machine, after running the length of the track, slid off the end without rising into the air at all. Several of the newspaper men returned the next day, but were again disappointed. The engine performed badly,...
Σελίδα 172 - Now there are only two ways of learning to ride a fractious horse : one is to get on him and learn by actual practice how each motion and trick may be best met; the other is to sit on a fence and watch the beast...
Σελίδα 172 - If I take this piece of paper, and after placing it parallel with the ground, quickly let it fall, it will not settle steadily down as a staid, sensible piece of paper ought to do, but it insists on contravening every recognized rule of decorum, turning over and darting hither and thither in the most erratic manner, much after the style of an untrained horse. Yet this is the style of steed that men must learn to manage before flying can become an everyday sport.
Σελίδα 178 - ... of pressure; (4) that steering up and down can be attained with a rudder, without moving the position of the operator's body; (5) that twisting the wings so as to present their ends to the wind at different angles is a more prompt and efficient way of maintaining lateral equilibrium than shifting the body of the operator.