Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ...the value of C for the plane of compact form being taken at '66. The author has been influenced in this partly by the fact that in all probability Dines' results are nearer the truth than those of Professor Langley, but more particularly by the consideration that when instituting a comparison it is safer to confine one's attention to the work of a single investigator, and Langley's experiments with the normal plane were not carried far enough to give the information required. For general employment in the subsequent volume (" Aerodromics ") the value of C is taken as 7, which is the result given by Langley for a plane of square form and corresponds with the result given by Dines for a plane 4x1. In adopting this value it has been borne in mind that it is desirable to have a general average figure that can be used with safety without specifying the exact form of the plane, and, taking C as 7, it will not matter seriously whether Langley's or Dines' result should ultimately prove to be the nearer to the truth. CHAPTER VI. THE INCLINED AEROPLANE. § 144. Introductory. Present State of Knowledge.--The problem presented by the inclined aeroplane is of very great complexity, and no general solution has at present been found. Our knowledge of the behaviour of the plane inclined to its direction of motion is in the main confined to the immediate results of experiment, extended it may be by the drawing of smooth curves through the observed points plotted on a co-ordinate chart. In certain extreme cases theoretical solutions have been found, and in other instances empirical formulse have been proposed, in fairly close agreement with the results on which they are based. In addition to the considerations that weigh in the case of the normal plane, we have...
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