propellers

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The three best propellers in an experimental round by Hiram Stevens Maxim.[1]

We can link any patent or publication on propellers to this page.

Enclosing categories propulsion, aerial navigation
Subcategories aerial propellers
Keywords propulseur, hélice, CPC B64C11/46, USPC 244/62
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End year


Other techtypes related to propellers: blades, CA 115/32, CPC B63H1/12, CPC B64B1/70, CPC B64C11/00, CPC B64C11/003, CPC B64C11/005, CPC B64C11/006, CPC B64C11/06, CPC B64C11/065, CPC B64C11/12, CPC B64C11/14, CPC B64C11/16, CPC B64C11/22, CPC B64C11/24, CPC B64C11/28, CPC B64C11/301, CPC B64C11/343, CPC B64C11/36, CPC B64C11/42, CPC B64C11/48, CPC B64D2700/62692, CPC B64D2700/62701, CPC B64D2700/62719, CPC B64D2700/62736, CPC B64D2700/62789, CPC B64D2700/62807, CPC B64D2700/62824, CPC B64D2700/62842, CPC F05B2210/16, CPC F05B2260/00, CPC F05B2260/70, CPC F05B2260/72, hélice, propulseur, rarefaction, USPC 244/51, USPC 244/65, USPC 244/66, USPC 244/67, USPC 244/68, USPC 244/71, USPC 244/73, USPC 244/74, USPC 244/92, USPC 416/124, USPC 416/127, USPC 416/128, USPC 416/129, USPC 416/146, USPC 416/148, USPC 60/269

Propeller placement

Maxim on propeller placement:

Many experimenters have imagined that a screw is just as efficient placed in front of a machine as at the rear, and it is quite probable that, in the early days of steamships, a similar state of things existed. [...] It would appear that many, having noticed that a horse-propelled carriage always has the horse attached to the front, and that the carriage is drawn instead of pushed, have come to the conclusion that, in a flying machine, the screw ought, in the very nature of things, to be attached to the front of the machine, so as to draw it through the air. Railway trains have their propelling power in front, and why should it not be the same with flying machines? But this is very bad reasoning. There is but one place for the screw, and that is in the immediate wake, and in the centre of the greatest atmospheric disturbance. While a machine is running, although there is a market difference between water and air as far as skin friction is concerned, still the conditions are the same as far as the position of the screw is concerned.

Links

References

  1. Maxim, 1909, Artificial and Natural Flight p. 33.

Other techtypes related to propellers: blades, CA 115/32, CPC B63H1/12, CPC B64B1/70, CPC B64C11/00, CPC B64C11/003, CPC B64C11/005, CPC B64C11/006, CPC B64C11/06, CPC B64C11/065, CPC B64C11/12, CPC B64C11/14, CPC B64C11/16, CPC B64C11/22, CPC B64C11/24, CPC B64C11/28, CPC B64C11/301, CPC B64C11/343, CPC B64C11/36, CPC B64C11/42, CPC B64C11/48, CPC B64D2700/62692, CPC B64D2700/62701, CPC B64D2700/62719, CPC B64D2700/62736, CPC B64D2700/62789, CPC B64D2700/62807, CPC B64D2700/62824, CPC B64D2700/62842, CPC F05B2210/16, CPC F05B2260/00, CPC F05B2260/70, CPC F05B2260/72, hélice, propulseur, rarefaction, USPC 244/51, USPC 244/65, USPC 244/66, USPC 244/67, USPC 244/68, USPC 244/71, USPC 244/73, USPC 244/74, USPC 244/92, USPC 416/124, USPC 416/127, USPC 416/128, USPC 416/129, USPC 416/146, USPC 416/148, USPC 60/269

Patents in category propellers

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