United States Army's Air Service Handbook [Vol 1 - Aviation Section, Signal PDF

By United States Army

Excerpt from Air provider guide, Vol. 1: Aviation part, sign Corps

Because the patience and air worthiness of airplane principally is dependent upon the care that's spent upon them, they need to be good sorted while within the hangars. Airplanes shouldn't be uncovered to extremes of warmth and chilly. in spite of the fact that good pro wooden will be, whether it is allowed to take in moisture it's going to at all times go to pot. Hangars as a result will be saved dry and, so far as attainable, at a fair temperature.

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Additional info for Air Service Handbook [Vol 1 - Aviation Section, Signal Corps]

Example text

Ordinary files and hack-saw blades are hardened in this manner and the brittleness of these tools is well known to those who have used them. Glass-hard steel is too brittle for ordinary purposes and is therefore softened or "let down" by a further heat treatment, which is gonerally described as tempering. In this process the steel is first carefully cleaned so as to prevent a bright surface and heat is giadually applied. Shortly after the application of heat a film of oxide begins to form on the bright surface and by the color of this film the amount 46643—18 4 AIR SERVICE HANDBOOK.

S3 should be joined together by threading them through a little stream-line fiber washer. — The tension to which you adjust the wires is of the greatest importance. All the wires on the airplane should be of the same tension, otherwise the airplane will quickly become distorted and fly badly. As a rule, the wires are tensioned too much. The tension should be sufficient to keep the framework rigid. Anything more than that spoils the factor of safety, throws various parts of the framework into undue compression, pulls the fittings into the wood, and will, in the end, distort the whole framework of the airplane.

Undue and dangerous Besides, an upon other wires. 1. Where spars are concerned, there For instance, in the case arch. i-5r''*r-w. Fig. spoiled. the airplane will be of is stress is being thrown an exception known as the the Maurice Farman, the spars of the center section plane, which have to take the weight of the nacelle, are arched upward. U ^ov^xcL bend down a little. This would produce a dangerous bending but as long as the wood is arched, or at any rate kept from bending downward, it will remain in direct compression and no to stress, danger can 2.

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Air Service Handbook [Vol 1 - Aviation Section, Signal Corps] by United States Army

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