Transversely-folded propeller

Abstract

The invention discloses a transversely-folded propeller. The transversely-folded propeller sequentially comprises a base connected with a rotating shaft, an inner propeller body located in the middle of propeller blades, an outer propeller body located on the outermost side and a connecting piece used for connecting the base, the inner propeller body and the outer propeller body. Or the propeller comprises a base connected with the rotating shaft, an outer propeller and a connecting piece for connecting the two parts; wherein one end of the base, the two ends of the inner paddle and one end of the outer paddle are respectively provided with a three-blade type connecting part, a through hole is formed in the same position of each blade, and the two three-blade type connecting parts and the connecting piece are matched to form two hinge mechanisms. The propeller has the advantages of being small in storage size, simple in structure, high in effective wing area proportion and high in folding, unfolding and unfolding speed, and manual intervention is not needed during unfolding. The effective blade length can be increased on the premise that the storage space of the aircraft is not changed, or the space occupied by aircraft storage is reduced under the condition that the blade length is kept unchanged.

Description

technical field [0001] The invention relates to a horizontally folded propeller, which can be widely used in fields such as helicopters, gyroplanes, foldable unmanned aerial vehicles, flying cars, etc., where it is necessary to reduce the space occupied by the propeller. Background technique [0002] With the rapid development of the aerospace industry, various new aircrafts emerge in an endless stream, such as flying cars and multi-rotor drones. For aircraft that rely on propellers to provide lift, such as most flying cars, helicopters, multi-rotor UAVs, etc., often due to their large-diameter propellers when idle, they need to occupy a very large space, resulting in low space utilization. Or in order to pursue a higher space utilization rate, the diameter of the propeller is forced to be reduced, resulting in insufficient power of the aircraft, increasing the fuel consumption rate of the aircraft, and reducing the life of the engine. [0003] For aircrafts that rely on pr...

AI Technical Summary

Problems solved by technology

[0004] At present, there are two types of folding propellers on the market: one is the longitudinal folding propeller, that is, the propeller is folded toward the direction of the rotating shaft, which will lengthen the axial length and does not substantially improve the space utilization rate; the other is the folding fan type The horizontally folded propeller is common in military helicopters, but the length of the propeller before and after folding has not changed, so it cannot be used in the problems mentioned above

Images