Flying Machines to Day
Flying Machines to Day
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In our eReader you can find the full English version of the book. Read Flying Machines to Day 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 Flying Machines to Day
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We are at the mercy of the wind, and wind velocities may reach a hundred miles an hour. The inherent dis- advantage of aerial flight is in what engineers call its '4ow load factor." That is, the ratio of normal perform- ance required to possible abnormal performance necessary under adverse conditions is extremely low. To make a balloon truly dirigible throughout the year involves, at Paris, for example, as we have seen, a speed exceeding fifty-four miles per hour: and even then, during one- ten...th the year, the effective speed would not exceed twenty miles Digitized by Google Digitized by Google ii8 Flying Machines Today per hour. A time table which required a schedule speed reduction of 60% on one day out of ten would be obviously unsatisfactory.
Further, if we aim at excessively high independent speeds for our dirigible balloons, in order to become inde- pendent of wind conditions, we soon reach velocities at which the gas bag is unnecessary: that is, a simple wing surface would at those speeds give ample support.
What to read after Flying Machines to Day?
You can find similar books in the "Read Also" column, or choose other free books by Ennis, William Duane, 1877- [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
We are at the mercy of the wind, and wind velocities may reach a hundred miles an hour. The inherent dis- advantage of aerial flight is in what engineers call its '4ow load factor." That is, the ratio of normal perform- ance required to possible abnormal performance necessary under adverse conditions is extremely low. To make a balloon truly dirigible throughout the year involves, at Paris, for example, as we have seen, a speed exceeding fifty-four miles per hour: and even then, during one- ten...th the year, the effective speed would not exceed twenty miles Digitized by Google Digitized by Google ii8 Flying Machines Today per hour. A time table which required a schedule speed reduction of 60% on one day out of ten would be obviously unsatisfactory.
Further, if we aim at excessively high independent speeds for our dirigible balloons, in order to become inde- pendent of wind conditions, we soon reach velocities at which the gas bag is unnecessary: that is, a simple wing surface would at those speeds give ample support.
What to read after Flying Machines to Day?
You can find similar books in the "Read Also" column, or choose other free books by Ennis, William Duane, 1877- [from Old Catalog] to read onlineMoreLess
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