The Dynamics of Mechanical Flight: Lectures Delivered at the Imperial College of Science and Technology, March, 1910 and 1911Constable, 1912 - 121 Seiten Lærebogsagtig redegørelse for teori og beregninger vedr. aerodynamik og flyvning. |
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Seite 45
... = 1 ; so that the inertia is increased by the weight of the medium displaced . Thus a spherical balloon or cylindrical air ship of weight W lb , displacing W ' lb of air , will start to THRUST AND CENTRE OF PRESSURE 45.
... = 1 ; so that the inertia is increased by the weight of the medium displaced . Thus a spherical balloon or cylindrical air ship of weight W lb , displacing W ' lb of air , will start to THRUST AND CENTRE OF PRESSURE 45.
Seite 107
... balloon to make an ascent with a man dates from 1783 , the hot air balloon of Montgolfier ( Fig . 54 ) . The legend goes that as Madame Montgolfier's silk dress was airing before a fire , it became inflated and rose to the ceiling ...
... balloon to make an ascent with a man dates from 1783 , the hot air balloon of Montgolfier ( Fig . 54 ) . The legend goes that as Madame Montgolfier's silk dress was airing before a fire , it became inflated and rose to the ceiling ...
Seite 108
... balloon , so that M = Vp lb denotes the weight of atmospheric air which fills the balloon , at a density p , lb / ft.3 When the air inside is raised in temperature from to ' degrees , absolute Centigrade , part of the air will flow out ...
... balloon , so that M = Vp lb denotes the weight of atmospheric air which fills the balloon , at a density p , lb / ft.3 When the air inside is raised in temperature from to ' degrees , absolute Centigrade , part of the air will flow out ...
Seite 109
... balloon will be floating in equilibrium when the weight of the balloon and hot air it contains is equal to the weight of surrounding cold air displaced ; that is when ( 3 ) Ө M Ꮎ ' o ' ― W + M W + W ' M Ꮎ = W ' + M , 0 ' Ө - = W W MW ...
... balloon will be floating in equilibrium when the weight of the balloon and hot air it contains is equal to the weight of surrounding cold air displaced ; that is when ( 3 ) Ө M Ꮎ ' o ' ― W + M W + W ' M Ꮎ = W ' + M , 0 ' Ө - = W W MW ...
Seite 110
... balloon of sport is filled with coal gas from the neighbouring works ; and on the aeronauts rule that 1,000 ft of this gas will lift about 40 lb , while 1,000 ft of air , at 12.5 ft / lb , weighs 1,000 ÷ 12 · 5 = 80 lb ; this makes the ...
... balloon of sport is filled with coal gas from the neighbouring works ; and on the aeronauts rule that 1,000 ft of this gas will lift about 40 lb , while 1,000 ft of air , at 12.5 ft / lb , weighs 1,000 ÷ 12 · 5 = 80 lb ; this makes the ...
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