Aeroplanes (Classic Reprint)By J. S. Zerbe
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Aeroplanes (Classic Reprint)By J. S. Zerbe
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Excerpt from AeroplanesChapter I. Theories and Facts About FlyingThe "Science" of Aviation. Machine Types. Shape or Form not Essential. A Stone as a Flying Machine. Power the Great Element. Gravity as Power. Mass and Element in Flying. Momentum a Factor. Resistance. How Resistance Affects Shape. Mass and Resistance. The Early Tendency to Eliminate Momentum. Light Machines Unstable. The Application of Power. The Supporting Surfaces. Area not the Essential Thing. The Law of Gravity. Gravity. Indestructibility of Gravitation. Distance Reduces Gravitational Pull. How Motion Antagonizes Gravity. A Tangent. Tangential Motion Represents Centrifugal Pull. Equalizing the Two Motions. Lift and Drift. Normal Pressure. Head Resistance. Measuring Lift and Drift. Pressure at Different Angles. Difference Between Lift and Drift in Motion. Tables of Lift and Drift. Why Tables of Lift and Drift are Wrong. Langley's Law. Moving Planes vs. Winds. Momentum not Considered. The Flight of Birds. The Downward Beat. The Concaved Wing. Feather Structure Considered. Webbed Wings. The Angle of Movement. An Initial Movement or Impulse Necessary. A Wedging Motion. No Mystery in the Wave Motion. How Birds Poise with Flapping Wings. Narrow-winged Birds. Initial Movement of Soaring Birds. Soaring Birds Move Swiftly. Muscular Energy Exerted by Soaring Birds. Wings not Motionless.Chapter II. Principles of Aeroplane Flight.Speed as one of the Elements. Shape and Speed. What "Square of the Speed" Means. Action of a "Skipper." Angle of Incidence. Speed and Surface. Control of the Direction of Flight. Vertical Planes.Chapter III. The Form ob Shape of Flying MachinesThe Theory of Copying Nature. Hulls of Vessels. Man Does not Copy Nature. Principles Essential, not Forms. Nature not the Guide as to Forms. The Propeller Type.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Aeroplanes (Classic Reprint)By J. S. Zerbe- Published on: 2015-09-27
- Original language: English
- Number of items: 1
- Dimensions: 9.02" h x .54" w x 5.98" l, .77 pounds
- Binding: Paperback
- 258 pages
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Most helpful customer reviews
1 of 1 people found the following review helpful. Airships rule! By Amazon Customer Airships rule! A crazy interesting historical reference and a very fascinating look at the past!
2 of 4 people found the following review helpful. Useless even as a historical curiosity By R. Myers It's pretty obvious that a book from 1915 will not be an up to date text on aerodynamics, but this book fails even in being a useful view of the art and science of the time.This was written by a mechanical engineer who had several other guides for boys published. He apparently knew absolutely nothing about aerodynamics and didn't seem to care to learn.It seem that his main thesis is that all others working in the field missed the fact that orbital mechanics are a major factor in holding an airplane up. He states that at a speed of 100 mph 'motion which is nearly sufficient to maintain it in horizontal flight, independently of any plane surface'. Well in reality, the speed required would be more like 18,000 mph.He dismisses the fact that concave bottom surfaces of the wing produce lift with 'Certain kinds of beetles, and particularly the common housefly, disprove that theory, as their wings are perfectly flat'.It would seem that someone tasked with providing an introduction to aerodynamics and aviation for children would have done better to try to summarize the current thinking on the matter, rather than advance his own crackpot hypotheses.To realize that a publisher, even then, would sell this to technically minded children, is a frightening thought.
See all 2 customer reviews... Aeroplanes (Classic Reprint)By J. S. Zerbe
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