Propeller suitable for multiple working conditions, power system and aircraft

Abstract

The utility model discloses a propeller adapting to multiple working conditions, a power system and an aircraft, the propeller adapting to multiple working conditions comprises at least two types of blades, the blades of each type are arranged in pairs, and the blades of each type have independently designed airfoils, chord lengths, attack angles and diameters. The at least two paddle types of paddles comprise a first paddle type paddle suitable for high-speed flight and a second paddle type paddle suitable for low-speed flight, the diameter of the first paddle type paddle is smaller than that of the second paddle type paddle, and the pitch of the first paddle type paddle is larger than that of the second paddle type paddle. According to the propeller adapting to the multiple working conditions, the power system and the aircraft, the propeller can adapt to more flight working conditions compared with a traditional single-pitch propeller, the complexity and cost are lower compared with a traditional variable-pitch propeller, the structural weight can be saved, and the structural complexity can be reduced.

Description

Technical Field

[0001] The present application belongs to the field of propeller technology, and in particular relates to a propeller, a power system and an aircraft that are adaptable to multiple working conditions. Background Art

[0002] The design and application of propellers in the existing technology field face a series of challenges. Specifically, when a propeller adopts a fixed-pitch design, it is inherently limited to a single pitch configuration, which means that the propeller's performance optimization is limited to specific operating conditions. In this scenario, it is difficult for the propeller to achieve optimal blade performance under different operating conditions, thus limiting its wide range of applications and maximum efficiency.

[0003] On the other hand, to overcome the limitations of fixed-wing propellers, the industry has introduced variable-pitch blade technology. While this design improves the propeller's adaptability to different operating conditions to a certain extent, the pitch-changing mechanism behind it is extremely complex. This complex mechanism not only significantly increases the propeller's overall weight, making installation and use inconvenient, but also requires a cumbersome maintenance process that requires specialized skills and frequent inspections, significantly increasing the cost and difficulty of using the propeller. Therefore, although variable-pitch blade technology has improved performance flexibility to a certain extent, its high cost and maintenance complexity remain significant factors restricting its widespread adoption.

[0004] In summary, the propeller designs in the existing technology, whether fixed-pitch or variable-pitch blades, have their own shortcomings. There is an urgent need for a new propeller design that can maintain performance advantages while reducing complexity and cost. Utility Model Content

[0005] One of the purposes of the present application is to provide a propeller, a power system and an aircraft that are adaptable to multiple operating conditions, can adapt to more flight conditions, and have lower complexity and cost.

[0006] To achieve the above application objectives, the technical solutions adopted in this application are as follows:

[0007] A first aspect of an embodiment of the present application provides a propeller that can adapt to multiple working conditions, comprising at least two types of blades, each type of blade being configured in pairs, and each type of blade having an independently designed airfoil, chord length, angle of attack and diameter.

[0008] Optionally, the at least two types of blades include a first type blade suitable for high-speed flight and a second type blade suitable for low-speed flight, the diameter of the first type blade is smaller than the diameter of the second type blade, and the pitch of the first type blade is greater than the pitch of the second type blade.

[0009] A second aspect of an embodiment of the present application provides a power system, including the above-mentioned propeller that can adapt to multiple working conditions.

[0010] A third aspect of an embodiment of the present application provides a power system, including a clutch mechanism and a plurality of the above-mentioned propellers adapted to multiple working conditions, wherein the clutch mechanism is configured to be able to switch between different propellers adapted to multiple working conditions.

[0011] A fourth aspect of an embodiment of the present application provides an aircraft, comprising the power system provided by the second aspect above.

[0012] A fifth aspect of an embodiment of the present application provides an aircraft, comprising the power system provided by the third aspect above, wherein the aircraft is a cross-medium aircraft.

[0013] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0014] The embodiments of the present application provide a propeller, a power system, and an aircraft that are adaptable to multiple operating conditions. The propeller can adapt to more flight conditions than a traditional single-pitch propeller and has lower complexity and cost than a traditional variable-pitch propeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A structural schematic diagram of a propeller adapted to multiple working conditions provided in an embodiment of the present application is shown.

[0017] Illustration:

[0018] 11. First paddle-type blade; 12. Second paddle-type blade. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0020] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0022] In order to illustrate the technical solution described in this application, specific embodiments are provided below.

[0023] An embodiment of the present application provides a propeller that can adapt to multiple working conditions, including at least two types of blades, each type of blade is configured in pairs, and each type of blade has an independently designed airfoil, chord length, angle of attack and diameter.

[0024] As an example, see Figure 1 As shown, at least two types of blades include a first type blade 11 suitable for high-speed flight and a second type blade 12 suitable for low-speed flight. The diameter of the first type blade 11 is smaller than the diameter of the second type blade 12, and the pitch of the first type blade 11 is greater than the pitch of the second type blade 12.

[0025] Specifically, the first propeller-type blade 11 has a shorter diameter and a larger pitch, and its airfoil is more suitable for high-speed flight.

[0026] Specifically, the second propeller blade 12 has a normal diameter, normal pitch, and a low-speed airfoil design.

[0027] Specifically, the two paddle-type blades are designed according to different flight characteristics, using separate airfoils, chord lengths, angles of attack, and diameters.

[0028] As an example, see Figure 1 As shown in the figure, the angle of attack of the first paddle-type blade 11 at the position shown in the figure and the length in the direction shown are 30° and 11 mm respectively.

[0029] As an example, see Figure 1 As shown, the figure also shows the angle of attack of the second paddle-type blade 12 at the position shown in the figure and the length in the direction shown, which are 24° and 12.65 mm respectively.

[0030] The propeller adapted to multiple operating conditions can adapt to more flight operating conditions than a traditional single-pitch propeller, and has lower complexity and cost than a traditional variable-pitch propeller.

[0031] In other embodiments of the present application, a power system is provided, comprising the multi-operating-condition adaptable propeller. Optionally, the power system further comprises a motor for driving the multi-operating-condition adaptable propeller.

[0032] In other embodiments of the present application, a power system is provided, comprising a clutch mechanism and a plurality of multi-condition propellers as described above, wherein the clutch mechanism is configured to switch between different multi-condition propellers. As an example, when an aircraft using this power system is airborne, the clutch mechanism switches the power system to use a first set of multi-condition propellers; when the aircraft using this power system is flying in water, the clutch mechanism switches the power system to use a second set of multi-condition propellers.

[0033] In other embodiments of the present application, an aircraft is provided, comprising a power system according to any of the above embodiments. When the power system includes a clutch mechanism and multiple propellers adapted to multiple operating conditions as described above, the aircraft is a cross-medium aircraft. The clutch mechanism in the power system can switch between different propellers as needed to meet the performance requirements of the aircraft in different mediums (e.g., air and water).

[0034] In summary, the embodiments of the present application provide a propeller, a power system, and an aircraft that are adaptable to multiple working conditions. The propeller can adapt to more flight conditions than a traditional single-pitch propeller, has lower complexity and cost than a traditional variable-pitch propeller, and can save structural weight and reduce structural complexity.

[0035] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A propeller adapted to multiple working conditions, characterized in that: The propeller comprises at least two types of propeller blades, each type of propeller blade is configured in pairs, and each type of propeller blade has an independently designed airfoil, chord length, angle of attack and diameter.

2. A propeller adapted to multiple working conditions according to claim 1, characterized in that: The at least two propeller-type blades include a first propeller-type blade suitable for high-speed flight and a second propeller-type blade suitable for low-speed flight, the diameter of the first propeller-type blade is smaller than the diameter of the second propeller-type blade, and the pitch of the first propeller-type blade is greater than the pitch of the second propeller-type blade.

3. A power system, characterized in that: The invention comprises a propeller adapted to multiple working conditions as claimed in claim 1 or 2.

4. A power system, characterized in that: It comprises a clutch mechanism and a plurality of propellers adapted to multiple working conditions as claimed in claim 1 or 2, wherein the clutch mechanism is configured to be able to switch between different propellers adapted to multiple working conditions.

5. An aircraft, characterized in that: Comprising the power system as claimed in claim 3.

6. An aircraft, characterized in that: The invention comprises the power system according to claim 4, wherein the aircraft is a trans-medium aircraft.

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