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 1 patents in category "Feathering propeller".
Patents in category Feathering propeller
- Patent US-1912-1047872 (English title: Feathering-propeller, Inventors: Axel M. Akerman, Filing date: 1912-02-03)
| Enclosing categories | Propeller, paddle wheel |
|---|---|
| Subcategories | |
| Keywords | USPC 244/20 |
| Start year | |
| End year |
