Novel variable-diameter variable-pitch propeller

Abstract

The invention discloses a novel variable-diameter variable-pitch propeller. According to the novel variable-diameter variable-pitch propeller, a propeller cap (5) is arranged on a propeller hub (4) and provides a mounting space and a top support for a connecting rod mechanism (1), a driving mechanism (2), a sliding supporting mechanism (6) and a locking release mechanism; the driving mechanism (2) and the sliding supporting mechanism (6) are fixed on the propeller hub (4); the output of the driving mechanism (2) is connected with the connecting rod mechanism (1); a propeller blade (3) is fixed at the guide output end of the connecting rod mechanism (1) through a variable pitch mechanism (8); the bottom of the guide output end of the connecting rod mechanism (1) is connected with the sliding supporting mechanism (6); the connecting rod mechanism (1) is supported and guided through the sliding supporting mechanism (6); the driving mechanism (2) drives the connecting rod mechanism (1) to drive the propeller blade (3) to stretch out and draw back in the propeller diameter direction along with the sliding supporting mechanism (6), so that the diameter size of the whole propeller disc is changed; the connecting rod mechanism (1) is locked through the locking release mechanism (7) after the propeller blade (3) stretches out / draws back in place; and the variable pitch mechanism (8) drives the propeller blade (3) to rotate, so that variable pitch of the whole propeller is realized.

Description

technical field [0001] The invention relates to a novel high-performance propeller device with variable diameter and variable pitch independent mechanism, which has strong adaptability and reliability to high and low altitude flight environments and can be used in low dynamic aircraft propulsion systems. Background technique [0002] With the advancement of modern science and technology, the unique resource advantages of adjacent space have become the focus of attention of all countries. In recent years, driven by the needs of regional disaster prevention and reduction, environmental monitoring, and communication, military powers such as the United States and Europe have been working hard to develop adjacent space resources. Dynamic aircraft has become one of the most active aircraft researches today, which mainly includes high-altitude unmanned aerial vehicles and high-altitude airships. It can be seen from the design schemes of foreign advanced high-altitude unmanned aeri...

AI Technical Summary

Problems solved by technology

Pitch adjustment is to adjust the pitch according to the height or thrust requirements, and then lock the pitch. These require a pitch adjustment device and a pitch locking device for closed-loop control. These adjustment mechanisms are usually structurally independent of the propeller drive, which increases the Complexity of Propeller Control Systems

Combined with the small changes in stratospheric high-altitude weather and few working conditions, some high-altitude low-dynamic aircraft also consider adopting variable speed from the perspective of economy and control systems, but this method will put higher demands on the high-altitude and low-altitude working performance and heat dissipation of the motor. Require

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