How to Fly As a Bird
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In our eReader you can find the full English version of the book. Read How to Fly As a Bird Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book How to Fly As a Bird
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To quickly assess the difficulty of the text, read a short excerpt:
Proportionate speed for our machine would be as the square root of the di- mension ratio, 1.72 equals 1.31.
Suppose the speed of the vulture is 30 miles. 30x1.3 equals would be 39 miles per hour. But because the friction of our machine will be much greater in proportion than the vultures, we must be content with much lower speed, say 30 miles per hour.
Its wing surface will be in the pro- portion of the square of the dimension ratio, 1.72 D. R. 1.72 squared equals 2.9584x7 square feet surface o...f the vul- ture's wings 20.7088 square feet for the wing sail area.' The spread of our wings being IS feet 2 inches, we shall make them 1.25 feet wide, narrower in proportion than the vulture's, which will give about 18 square feet surface per pair and 36 square feet surface in two sets of wings.
The radius of the centre of effort of each wing will be 5.687 feet.
The weight divided by the radius of the centre of effort, 155 divided by 5.687 feet equals 27.25 lbs. at the two centres of effort of the two descending wings, and say 13.6 lbs.
What to read after How to Fly As a Bird?
You can find similar books in the "Read Also" column, or choose other free books by Holland, John Philip, 1842-1914 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Proportionate speed for our machine would be as the square root of the di- mension ratio, 1.72 equals 1.31.
Suppose the speed of the vulture is 30 miles. 30x1.3 equals would be 39 miles per hour. But because the friction of our machine will be much greater in proportion than the vultures, we must be content with much lower speed, say 30 miles per hour.
Its wing surface will be in the pro- portion of the square of the dimension ratio, 1.72 D. R. 1.72 squared equals 2.9584x7 square feet surface o...f the vul- ture's wings 20.7088 square feet for the wing sail area.' The spread of our wings being IS feet 2 inches, we shall make them 1.25 feet wide, narrower in proportion than the vulture's, which will give about 18 square feet surface per pair and 36 square feet surface in two sets of wings.
The radius of the centre of effort of each wing will be 5.687 feet.
The weight divided by the radius of the centre of effort, 155 divided by 5.687 feet equals 27.25 lbs. at the two centres of effort of the two descending wings, and say 13.6 lbs.
What to read after How to Fly As a Bird?
You can find similar books in the "Read Also" column, or choose other free books by Holland, John Philip, 1842-1914 to read onlineMoreLess
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