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. 1917 Excerpt: ...Biplane from detecting the approach of an invading aeroplane, but because the noise of the exhaust must be suppressed so that the pilot and the gunner on scout who is with him can converse and also that wireless messages can be received. How Engines Drive the Propellers.--There are three ways of connecting the engine ...
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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. 1917 Excerpt: ...Biplane from detecting the approach of an invading aeroplane, but because the noise of the exhaust must be suppressed so that the pilot and the gunner on scout who is with him can converse and also that wireless messages can be received. How Engines Drive the Propellers.--There are three ways of connecting the engine to the propeller, or Fig. 57.--A Direct Driven Propeller transmission as it is called; and these are (1) direct; (2) by gears and (3) by chains. The first way is called a direct drive because the propeller is fastened directly to the end of the shaft of the engine, as shown in Fig. 57; the second is by gears, or cog wheels, when the engine is connected to one gear and the propeller to another gear, and as these gears mesh with each other the engine drives the propeller. The third way is to have a pair of sprocket wheels fixed to the shaft of the engine and one to each of the shafts of the propeller, and to connect them with chains as on a bicycle. This is called a chain drive, and is clearly shown in Fig. 58. A Final Word About Propellers.--Many kinds of propellers have been designed to the end that a perfect one might be made, but there is a lot to be found out about them yet. The Wright propellers are the most efficient that are made at the present time. Propellers are made of wood and of metal; most of them have only two blades, while some have three and even four blades. They are made in all sizes, of all pitches and are driven at all speeds--within certain limits, of course. The smallest propeller ever used was only 6 feet in diameter, had a pitch of 4 feet and was driven at 670 revolutions per minute. The largest propeller to date had a diameter of 10 feet, a 10%-foot pitch and was driven at 690 revolutions per minute. From what has been ...
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Used-Acceptable. Fair hardback in burgundy cloth. School library bookplate on front pastedown; free end papers & page fore-edge foxed; binding tight; cloth nastily discoloured, particularly on back board; wear at head & foot of spine.
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Fine. Trade paperback (US). Glued binding. 196 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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New. Trade paperback (US). Glued binding. 196 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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New. Trade paperback (US). Glued binding. 196 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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Seller's Description:
Fine. Trade paperback (US). Glued binding. 196 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
