The Air Propeller Its Working Characteristics And Theory Together With a Brief
The book The Air Propeller Its Working Characteristics And Theory Together With a Brief was written by author Frederick Bedell Here you can read free online of The Air Propeller Its Working Characteristics And Theory Together With a Brief book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Air Propeller Its Working Characteristics And Theory Together With a Brief a good or bad book?
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We have discussed various propeller characteristics independent of the motor used to drive the propeller, the separate study of engine and propeller being for most pur- poses preferable. Thus, in Fig. 53, was shown the thrust horse power obtained from a certain propeller driven at specified constant speeds by any motor. This constant speed is obtained by throttle adjustment, when a gas engine is used. In Fig. 58 are shown curves for thrust horse power for a given propeller driven by a particula...r gas engine, these curves being not for constant speed as in Fig. 53, but for constant throttle. It was shown in Fig. 50 how the brake horse power and speed N is determined for full throttle (or for ^ or y throttle) when F is 50, 7 5, 100, 1 2 5 or 1 50 M P H. Thrust horse power may be obtained by multiplying brake horse power, as here shown, by efficiency, which is known from Fig. 55 when V, N and D are known. The curves in Fig. 58 were thus determined. The chief propeller characteristics have now been shown, most important being the power available curves in Fig.
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