Collapsible lift propellers

摘要

Aerial vehicles may be equipped with collapsible lift propellers and thrust propellers. The collapsible lift propellers may include retractable tips that may pivot or rotate from a first orientation substantially co-aligned with a main body of the collapsible lift propellers during ordinary operations and a second orientation substantially transverse to the main body of the collapsible lift propellers when rotation of the collapsible lift propellers is stopped. The collapsible lift propellers may further include biasing elements, e.g., springs for biasing the retractable tips into the second orientation, and mechanical stops for inhibiting the pivoting or rotation of the retractable tips beyond the first orientation.

主权项

1. An unmanned aerial vehicle comprising:
a frame; a motor mounted to the frame; a propeller coupled to the motor;
wherein the propeller comprises a fixed blade and a collapsible blade mounted to a hub coupled to the motor, andwherein the collapsible blade comprises a fixed blade root and a collapsible blade tip pivotably mounted to the fixed blade root.