The Air Propeller Its Working Characteristics And Theory Together With a Brief
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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.
What to read after The Air Propeller Its Working Characteristics And Theory Together With a Brief?
You can find similar books in the "Read Also" column, or choose other free books by Frederick Bedell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
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.
What to read after The Air Propeller Its Working Characteristics And Theory Together With a Brief?
You can find similar books in the "Read Also" column, or choose other free books by Frederick Bedell to read onlineMoreLess
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