Longitudinal rotary transformer screw propeller

Abstract

The invention discloses a completely new concept screw propeller. The device is provided with a plurality of blades; and the blades are connected with an engine transmission shaft through a connecting rod. The screw propeller is characterized in that: a revolving trail of the blades is in the shape of a three-dimensional cylinder, but the revolving trail of the blades of the conventional screw propeller is in the shape of a circular platform; the cylinder formed by the revolving trail of the screw propeller is parallel to an engine power output shaft connected with the connecting rod, but the circular plane formed by the revolving trail of the blades of the conventional screw propeller is perpendicular to the engine power output shaft; the blades of the screw propeller periodically deform when doing work, but the blades of the conventional screw propeller do not deform generally when doing work; and the screw propeller can be used for driving an airplane, a ship, a vehicle or other devices moving with hydrodynamic force. The revolving mode of the screw propeller differs in fundamental significance from the conventional screw propeller; and the screw propeller has the superior functions which are not owned by the conventional screw propeller.

Description

technical field [0001] The invention relates to a device for generating fluid power, in particular to a device for generating fluid power by utilizing the rotation and deformation of propellers. Background technique [0002] Propellers have a long history. It has been 260 years since marine propellers came out (1752, Bernoulli, Switzerland), and it has been nearly 110 years since air propellers came out (1903, American Wright Brothers). If counting from the "bamboo dragonfly", air propellers have been around for at least 1,700 years (the "flying car" in "Baopuzi" by Ge Hong (283-343) of the Eastern Jin Dynasty is recognized as a bamboo dragonfly. Although Ge Hong described "Flying car", but not necessarily the inventor of the thing, and the invention time must be earlier than the recorded time.). [0003] In the history of at least hundreds of years, both marine propellers and air propellers have undergone countless developments and evolutions. However, these developments...

AI Technical Summary

Problems solved by technology

It can be seen that 3 / 4 of the effective fluid power is not utilized

[0021] (2). The area of ​​the propeller is too large, and the installation and use are greatly restricted

[0023] (3). The action direction of the existing propeller hydrodynamic force is not easy to change

[0030] (4). The rolling tendency of the helicopter propeller, that is, the forward blade and the backward blade due to the difference in lift force, is not easy to solve fundamentally

[0033] (5). The tail rotor of existing helicopters not only consumes power, increases parts, operation complexity and body weight, but also is prone to failure

[0048] Second, MD's airflow elimination type tailless rotor technology is only available in the United States, but because firstly, this technology needs to occupy more power of the engine, resulting in insufficient reserve power, reduced maneuverability and load capacity; secondly, the airflow without tail rotor The design destroys the tail flow separation of the original rotor system and damages the flight performance of the helicopter

Therefore, the tailless rotor technology cannot be applied to large and medium-sized helicopters, nor does it have high maneuverability.

Its corresponding models such as MD500N, MD600N and MD900 / 902 series are all light and small without exception, and there are no military models due to poor maneuverability

[0049] Third, the shortcomings of Boeing's tandem dual-rotor technology are mainly due to the complexity of the mechanical structure, resulting in high costs and difficult maintenance

[0055] (1): Due to the complex structure, it is difficult to manufacture, manipulate and maintain;

[0056] (2): It needs to occupy more power of the engine, resulting in insufficient reserve power and reduced load capacity;

[0057] (3): The relevant design has destroyed the tail airflow separation of the original helicopter rotor system and damaged the flight performance of the helicopter;

[0058] (4): The number of rotor blades is greatly limited;

[0059] It is not difficult to see from the above introduction that the existing technology for eliminating the tail rotor cannot guarantee that its comprehensive advantages are greater than that of the tail rotor technology

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