Feathering propeller
A feathering propeller is one whose blades rotate so their edges can face the airflow to minimize drag when the engine's off. The same concept is used on paddle wheels, which drive boats.
A feathering propeller is in the category of variable-pitch propellers, that is, those which can change their angle with respect to the airflow. (On an airfoil this angle is called the angle of attack.)[1]
The term "feathering" was borrowed from rowing. The "feather position" is with the blades can be parallel to the airflow, to minimize air resistance. On a modern airplane, the switch to the feather position may be either automatic or pilot-controlled.[1]
References
This wiki has 20 patents categorized in "Feathering propeller" or "Feathering". Other techtypes related to Feathering propeller or Feathering: CPC B64C27/56, CPC B64C27/58, CPC B64C27/72, CPC B64C27/78, Feathering propeller, USPC 244/20
Patents in categories Feathering propeller or Feathering
- Patent US-1857-16943 (English title: Feathering the sails or vanes of windmills, Inventors: J. C. Wilson • T. G. Wilson)
- Patent US-1865-50338 (English title: Improved feathering paddle-wheel, Inventors: M. Grier Collins)
- Patent US-1866-60345 (English title: Improved feathering paddle wheel, Inventors: John V. Dinsmore)
- Patent US-1867-65023 (English title: Improved paddle-wheel, Inventors: Elihu Spencer)
- Patent US-1875-162756 (English title: Improvement in feathering paddle-wheels, Inventors: Charles A. Lamphere)
- Patent US-1883-269948 (English title: Feathering paddle-wheel, Inventors: Charles Megow)
- Patent US-1884-318408 (English title: Paddle wheel for propelling vessels, Inventors: John S. Allen)
- Patent US-1894-530219 (English title: Apparatus for aerial navigation, Inventors: Nicholas H. Borgfeldt)
- Patent US-1898-626688 (English title: Submerged feathering propeller, Inventors: Edward F. Gorman • Penfield F. Yost)
- Patent US-1900-641289 (English title: Paddle-wheel with feathering-blades, Inventors: Reinhold Heere)
- Patent US-1904-818825 (English title: Feathering-blade paddle-wheel, Inventors: James Amers Hicks)
- Patent US-1905-815776 (English title: Feathering paddle-wheel, Inventors: Edwin A. Young)
- Patent US-1907-870586 (English title: Water-wheel, Inventors: Frederick E. Renick)
- Patent US-1910-974490 (English title: Blade-feathering mechanism for propellers, Inventors: Hugo Hückel)
- Patent GB-1910-6359 (English title: Warping and feathering aeroplane wings, Inventors: Helmuth Paul Martin • George Harris Handasyde)
- Patent US-1910-1021925 (English title: Flying-machine, Inventors: Adelbert A. Fokken)
- Patent US-1912-1047872 (English title: Feathering-propeller, Inventors: Axel M. Akerman)
- Patent GB-1912-26108 (English title: Improvements in Aerial Craft, Inventors: Benjamin Short)
- Patent US-1915-1246289 (English title: Feathering paddle-wheel or propeller, Inventors: David Lindsay)
- Patent US-1918-1355109 (English title: Propelling mechanism, Inventors: Frank F. Simons)
| Enclosing categories | Propeller, paddle wheel |
|---|---|
| Subcategories | |
| Keywords | USPC 244/20, Feathering |
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