Low-speed take-off and landing fixed-wing aircraft

Abstract

The invention relates to the technical field of aircrafts, in particular to a low-speed take-off and landing fixed-wing aircraft which comprises a fuselage (1), a flight control system (2), an aero-engine (3), a jet engine tail nozzle (4), wings (5), aircraft energy (6) and an empennage (7). The low-speed take-off and landing fixed-wing aircraft can take off and land at a low speed, accidents are reduced, control is easier, and flight safety is improved; the unmanned aerial vehicle can take off and land on a shorter runway or space, and the requirement for a take-off and landing site is low; the control difficulty is lowered, the requirement for a driver is lowered, and popularization is facilitated; the flying speed is high, low-speed flying can also be achieved, and the requirements of various tasks are met.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft, and in particular to a fixed-wing aircraft for low-speed take-off and landing. Background Art

[0002] The implementation plan for innovative application of general aviation equipment proposes that by 2027, my country's general aviation equipment supply capacity and industry innovation capacity will be significantly improved, a modern general aviation basic support system will be basically established, an efficient and integrated industrial ecosystem will be initially formed, and a general aviation public service equipment system will be basically improved. New general aviation equipment with unmanned, electrified, and intelligent technical features will be commercially applied in urban air transport, logistics distribution, emergency rescue and other fields. By 2030, a new model for the development of the general aviation industry characterized by high-end, intelligent, and green development will be basically established, supporting and ensuring the safe and efficient operation of the "short-distance transport + electric vertical take-off and landing" passenger network, the "trunk-branch-end" drone delivery network, and the low-altitude production operation network that meets the needs of industrial and agricultural operations. General aviation equipment will be fully integrated into all areas of people's production and life, becoming a powerful driving force for low-altitude economic growth and forming a trillion-level market scale.

[0003] The popularization and universalization of aircraft is the current trend, which requires aircraft to undergo changes;

[0004] At present, due to the high speed, short reaction time, great difficulty and high risk of operation during the take-off and landing phases, more than 60% of flight accidents occur during the take-off and landing phases, requiring aircraft to be transformed.

[0005] The present application relates to a low-speed take-off and landing fixed-wing aircraft which has at least the following beneficial technical effects: the low-speed take-off and landing aircraft can take off and land at a low speed, which reduces the occurrence of accidents, is easier to control, and improves the safety of flight; it can take off and land on a shorter runway or space, and has lower requirements for the take-off and landing site; it reduces the difficulty of operation and the requirements for the pilot, which is conducive to popularization; it has a fast flight speed and can also fly at a low speed, and can adapt to the requirements of various tasks. Summary of the invention

[0006] The purpose of this application is to provide a low-speed take-off and landing fixed-wing aircraft that can fly at a high speed and can also fly at a low speed, and can take off and land at a low speed;

[0007] The technical solution of the present application is: a low-speed take-off and landing fixed-wing aircraft, comprising a fuselage (1), a flight control system (2), an aircraft engine (3), a jet engine tail nozzle (4), wings (5), an aircraft energy source (6), and a tail wing (7);

[0008] The main function of the fuselage (1) is to carry equipment, passengers, cargo, etc., and to connect components such as a flight control system (2), an aircraft engine (3), a jet engine tail nozzle (4), wings (5), an aircraft energy source (6), and a tail wing (7) into a whole; the flight control system (2) is used to operate and control the aircraft; the aircraft engine (3) is an engine that provides the aircraft with the power required for flight;

[0009] The jet engine tail nozzle (4) is installed behind the aircraft engine (3); the jet engine tail nozzle (4) can be deflected downward at a desired angle. When the jet engine tail nozzle (4) is deflected downward at a certain angle, the relatively high-speed airflow ejected from the aircraft engine (3) is ejected through the jet engine tail nozzle (4) deflected downward at a certain angle, thereby generating a downward thrust component, thereby generating an upward reaction force, providing lift for the low-speed take-off and landing fixed-wing aircraft, and converting part (or most or all) of the thrust of the aircraft engine (3) into lift in the vertical direction;

[0010] The left wing (5) and the right wing (5) are each equipped with one (or several) (or a group) of the aircraft engines (3) and the jet engine tail nozzles (4). Generally, the air inlets of the wing (5) and the aircraft engines (3) are facing the front airflow in the level flight state (i.e., facing forward in the direction of level flight, or similar to facing forward in the direction of level flight, or approximately facing forward in the direction of level flight);

[0011] When the low-speed take-off and landing fixed-wing aircraft is to take off and land at a low speed, the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) are both deflected downward by a required angle, so that part (or most or all) of the thrust of the aircraft engine (3) is converted into lift in the vertical direction; at the same time, the backward thrust of the aircraft engine (3) generates a forward reaction force to push the aircraft forward or the low-speed take-off and landing aircraft forward under inertia. The low-speed take-off and landing aircraft has a certain speed, and the wing (5) also generates lift. By controlling the lift generated by the wing (5) and the aircraft engine (3) (or the aircraft engine and the jet engine tail nozzle in combination) and the lift of the wing (5), the low-speed take-off and landing of the low-speed take-off and landing fixed-wing aircraft can be controlled. Since the aircraft engine (3) (or the aircraft engine and the jet engine tail nozzle in combination) generates lift, additional lift is provided to the low-speed take-off and landing fixed-wing aircraft, and the tail wing (7) must be controlled in time to balance, stabilize and manipulate the aircraft.

[0012] When the low-speed take-off and landing fixed-wing aircraft in a low-speed take-off and landing state wants to turn to level flight, the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) can be slowly turned backwards, and after the aircraft speed increases, it can turn to a required angle to fly normally, and can become a fixed-wing aircraft that flies normally;

[0013] When the low-speed take-off and landing fixed-wing aircraft is in a level flight state, the thrust part (or most part) of the aircraft engine (3) can be converted into lift in the vertical direction by controlling the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) to deflect downward by a certain angle, thereby providing additional lift to the low-speed take-off and landing fixed-wing aircraft, and the low-speed take-off and landing fixed-wing aircraft can fly at a low speed; since the aircraft engine (3) (or the aircraft engine and the jet engine tail nozzle cooperate) generates lift, providing additional lift to the low-speed take-off and landing fixed-wing aircraft, the tail wing (7) should be controlled in time to balance, stabilize and manipulate the aircraft;

[0014] When the low-speed take-off and landing fixed-wing aircraft is flying at a relatively high speed, the wing (5) is the main component that generates lift;

[0015] The aircraft energy (6) is the energy that provides the aircraft with a power source;

[0016] The main function of the tail wing (7) is to ensure the balance and stability of the aircraft and to control the aircraft.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the description of this application shall be the common meanings understood by the general technicians in the field to which this application belongs. In the description of this application, the terms "outer", "inner", "a section", "a level", "import", "export", "axial", "tangential", "inner diameter", "outer diameter", "interlaced", "corresponding", "circumference", "certain", "last", etc. indicate the position or position relationship, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first level", "next level", "step by step", "a module unit", "last level" and similar terms are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance. The words "one", "a level" and the like used in the description of this application should not be understood as an absolute limitation on the number, but should be understood as the existence of at least one. The words "deflected downward 90 degrees", "horizontally backward" and the like used in the description of this application should not be understood as an absolute limitation on the degree, but should be understood as including "deflected downward 90 degrees" and "horizontally backward". The words "including", "or", "or" and the like used in the description of this application mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects;

[0018] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the words "connect", "assembly", "installation", "combination", "connection" and similar words used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a low-speed take-off and landing fixed-wing aircraft provided in an embodiment of the present application;

[0020] Among them: 1-fuselage, 2-flight control system, 3-aircraft engine, 4-jet engine tail nozzle, 5-wing, 6-aircraft energy, 7-tail;

[0021] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; in addition, the drawings are used for illustrative purposes, and the terms describing the positional relationships therein are limited to illustrative purposes and cannot be understood as limitations on this patent. DETAILED DESCRIPTION

[0022] The specific embodiments described herein are only some embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0023] The following is a supplementary description of this application in conjunction with the accompanying drawings;

[0024] Figure 1 In an embodiment, the jet engine tail nozzle (4) can be deflected downward by a desired angle, and can be deflected downward by a maximum of 90 degrees (or about 90 degrees, or similar to 90 degrees) or more;

[0025] When the low-speed take-off and landing fixed-wing aircraft is about to take off at a low speed, the jet engine tail nozzle (4) is deflected downward by 45 degrees (or a certain angle), and the high-speed airflow ejected from the aircraft engine (3) is ejected through the jet engine tail nozzle (4) deflected downward by 45 degrees (or a certain angle), thereby generating a downward thrust component, thereby generating an upward reaction force, providing lift for the low-speed take-off and landing fixed-wing aircraft; at the same time, a backward thrust component is generated, generating a forward reaction force to push the aircraft forward, and when the low-speed take-off and landing aircraft has a certain speed, the wing (5) also generates lift; when the lift generated by the aircraft engine (3) (or the aircraft engine and the jet engine tail nozzle in combination) and the wing (5) When the resultant force of the lift and other forces acting on the lift of the low-speed take-off and landing fixed-wing aircraft is greater than the weight of the low-speed take-off and landing fixed-wing aircraft, the low-speed take-off and landing fixed-wing aircraft begins to rise; compared with traditional fixed-wing aircraft in which the wing lift provides the main lift, the low-speed take-off and landing fixed-wing aircraft requires less wing lift when it starts to rise, and the wing lift of the low-speed take-off and landing fixed-wing aircraft meets the requirement at a lower speed, so the low-speed take-off and landing fixed-wing aircraft can take off at a low speed; because the aircraft engine (3) (or the aircraft engine and the jet engine tail nozzle) generate lift, additional lift is provided to the low-speed take-off and landing fixed-wing aircraft, and the tail wing (7) must be controlled in time to balance, stabilize and manipulate the aircraft;

[0026] When the low-speed take-off and landing fixed-wing aircraft is about to land at a low speed, the jet engine tail nozzle (4) is deflected downward by 90 degrees (or a certain angle), and the relatively high-speed airflow ejected from the aircraft engine (3) is ejected through the jet engine tail nozzle (4) deflected downward by 90 degrees (or a certain angle), thereby generating a downward thrust component, thereby generating an upward reaction force, and providing lift for the low-speed take-off and landing fixed-wing aircraft; at the same time, the low-speed take-off and landing aircraft moves forward under inertia, the low-speed take-off and landing aircraft has a certain speed, and the wing (5) also generates lift; when the lift generated by the aircraft engine (3) (or the aircraft engine and the jet engine tail nozzle in combination), the lift of the wing (5) and other forces acting on the lift of the low-speed take-off and landing fixed-wing aircraft are less than the gravity of the low-speed take-off and landing fixed-wing aircraft, the low-speed take-off and landing fixed-wing aircraft begins to descend, and reaches a certain descent speed. When the aircraft engine (3) (or the aircraft engine and the tail nozzle of the jet engine are in cooperation), the lift of the wing (5) and other forces acting on the lift of the low-speed take-off and landing fixed-wing aircraft are controlled to be equal to the weight of the low-speed take-off and landing fixed-wing aircraft, so that the low-speed take-off and landing fixed-wing aircraft maintains a certain speed of descent until the landing is completed; compared with traditional fixed-wing aircraft whose wing lift provides the main lift, the low-speed take-off and landing fixed-wing aircraft requires less wing lift during the descent process, and the wing lift of the low-speed take-off and landing fixed-wing aircraft meets the requirement at a lower speed, so the low-speed take-off and landing fixed-wing aircraft can land at a low speed; because the aircraft engine (3) (or the aircraft engine and the tail nozzle of the jet engine are in cooperation) generates lift, it provides additional lift to the low-speed take-off and landing fixed-wing aircraft, so the tail wing (7) should be controlled in time to balance, stabilize and manipulate the aircraft;

[0027] When the low-speed take-off and landing fixed-wing aircraft in a low-speed take-off and landing state wants to turn to level flight, the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) can be slowly turned backwards. After the aircraft speed increases, it can be turned to a horizontal backward position (or a required angle) to fly normally, and can become a fixed-wing aircraft that flies normally. The thrust of the aircraft engine (3) is mainly used to overcome the resistance encountered by the aircraft during flight, and the low-speed take-off and landing fixed-wing aircraft can fly at a relatively high speed;

[0028] When the low-speed take-off and landing fixed-wing aircraft is flying at a relatively high speed, the wing (5) is the main component that generates lift; the thrust of the aircraft engine (3) of the wing (5) is mainly used to overcome the resistance encountered by the aircraft during flight, and the resistance is generally much smaller than the gravity of the low-speed take-off and landing fixed-wing aircraft, so the flight efficiency is high;

[0029] When the low-speed take-off and landing fixed-wing aircraft is in a level flight state, the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) can be respectively controlled to deflect downward by a certain angle, so that the high-speed airflow ejected from the aircraft engine (3) is ejected through the jet engine tail nozzles (4) deflected downward by a certain angle, thereby generating a downward thrust component, thereby generating an upward reaction force, and providing lift for the low-speed take-off and landing fixed-wing aircraft; at the same time, a backward thrust component is generated, and a forward reaction force is generated to overcome the resistance encountered by the aircraft during flight, so as to To maintain a certain speed of the low-speed take-off and landing fixed-wing aircraft, the wing (5) also generates lift; since the aircraft engine (3) (or the aircraft engine and the tail nozzle of the jet engine in combination) generate lift, additional lift is provided to the low-speed take-off and landing fixed-wing aircraft, which can supplement the insufficient lift of the wing (5) at low speed, so as to maintain the total lift of the low-speed take-off and landing fixed-wing aircraft at low speed not less than the gravity of the low-speed take-off and landing fixed-wing aircraft, and the low-speed take-off and landing fixed-wing aircraft can fly at low speed; the tail wing (7) should be controlled in time to balance, stabilize and manipulate the aircraft;

[0030] The amount of additional lift provided to the low-speed take-off and landing fixed-wing aircraft can be controlled by controlling the downward deflection angle of the jet engine tail nozzle (4) of the left wing (5) or the right wing (5) or controlling the thrust of the aircraft engine (3) or controlling both in coordination, so as to achieve different low-speed flights of the low-speed take-off and landing fixed-wing aircraft;

[0031] The low-speed take-off and landing fixed-wing aircraft can fly fast and can also fly slowly, and can perform tasks that require quickly reaching the destination, conducting searches, and returning.

Claims

1. A low-speed take-off and landing fixed-wing aircraft, characterized in that: The low-speed take-off and landing fixed-wing aircraft comprises a fuselage (1), a flight control system (2), an aircraft engine (3), a jet engine tail nozzle (4), wings (5), an aircraft energy source (6), and a tail wing (7).

2. The low-speed take-off and landing fixed-wing aircraft according to claim 1, characterized in that: The main function of the fuselage (1) is to carry equipment, passengers, cargo, etc., and to connect components such as a flight control system (2), an aircraft engine (3), a jet engine tail nozzle (4), wings (5), an aircraft energy source (6), and a tail wing (7) into a whole; the flight control system (2) is used to operate and control the aircraft; and the aircraft engine (3) is an engine that provides the aircraft with the power required for flight.

3. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: The jet engine tail nozzle (4) is installed at the rear of the aircraft engine (3); the jet engine tail nozzle (4) can be deflected downward at a required angle. When the jet engine tail nozzle (4) is deflected downward at a certain angle, the relatively high-speed airflow ejected from the aircraft engine (3) is ejected through the jet engine tail nozzle (4) deflected downward at a certain angle, thereby generating a downward thrust component, thereby generating an upward reaction force, providing lift for the low-speed take-off and landing fixed-wing aircraft, and converting part (or most or all) of the thrust of the aircraft engine (3) into lift in the vertical direction.

4. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: The left wing (5) and the right wing (5) are each equipped with one (or several) (or a group) of the aircraft engines (3) and the jet engine tail nozzle (4).

5. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: When the low-speed take-off and landing fixed-wing aircraft is to take off and land at a low speed, the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) are both deflected downward by a required angle, so that part (or most or all) of the thrust of the aircraft engine (3) is converted into lift in the vertical direction, and the low-speed take-off and landing aircraft can take off and land at a low speed.

6. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: When the low-speed take-off and landing fixed-wing aircraft in the low-speed take-off and landing state wants to turn to level flight, the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) can be slowly turned backwards. After the aircraft speeds up, it can turn to the required angle and then fly normally.

7. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: When the low-speed take-off and landing fixed-wing aircraft is in a level flight state, the thrust part (or most part) of the aircraft engine (3) can be converted into lift in the vertical direction by controlling the jet engine tail nozzles (4) of the left wing (5) and the right wing (5) to deflect downward by a certain angle, thereby providing additional lift to the low-speed take-off and landing fixed-wing aircraft, and the low-speed take-off and landing fixed-wing aircraft can fly at a low speed.

8. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: When the low-speed take-off and landing fixed-wing aircraft is flying at a relatively high speed, the wing (5) is the main component that generates lift.

9. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: The aircraft energy (6) is the energy that provides a power source for the aircraft.

10. A low speed take-off and landing fixed-wing aircraft according to any one of the preceding claims, characterized in that: The main function of the tail wing (7) is to ensure the balance and stability of the aircraft and to control the aircraft.

Images