CN210822720U - Unmanned aerial vehicle with power module capable of being interchanged in forward pulling mode and backward pushing mode - Google Patents

Abstract

The utility model provides a power module can pull forward/push away unmanned vehicles who exchanges backward. The aircraft comprises: the modularized power machine comprises a modularized front, middle and rear three-section type machine body, two fixed main wings arranged on two sides of the machine body, a pair of tail wings arranged at the tail part of the machine body and modularized power capable of being installed at the front section or the rear section of the modularized machine body; the modularized power can be exchanged between a forward pulling mode and a backward pushing mode according to the flight mission requirement; the modularized power is arranged at the front section of the machine body to form a forward-pulling layout, and the whole machine can fly with higher propelling efficiency; the modularized power is arranged at the rear section of the machine body to form a rear pushing layout, and the whole machine can fly with higher aerodynamic efficiency. The flexible exchange of the modular power forward pulling and backward pushing modes improves the adaptability of the unmanned aerial vehicle to different types of flight tasks.

Description

Unmanned aerial vehicle with power module capable of being interchanged in forward pulling mode and backward pushing mode

Technical Field

The embodiment of the invention relates to the aircraft technology, in particular to an unmanned aircraft with a power module capable of being pulled forwards or pushed backwards.

Background

The fixed wing unmanned aerial vehicle can be divided into a forward pulling type and a backward pushing type according to different propulsion modes. The forward-pull type generally is that a power system is arranged in front of a fuselage or at the front edge of a wing, and the drag force of the whole aircraft during forward flight is balanced by the pulling force of a propeller or other propelling devices; in contrast, the push-back type is to mount power on the tail part of the fuselage or the trailing edge of the wing, and the thrust of a propeller or other propulsion devices is used for balancing the resistance of the whole aircraft in the forward flight.

In actual use, different propulsion modes are often adopted according to different task requirements. For the unmanned aerial vehicle taking reconnaissance and monitoring as a main task, main equipment such as a radar and a photoelectric sensor is usually arranged at the front part of a machine body, a tail pushing mode is usually adopted to be favorable for reducing interference caused by a power module, and the whole machine can have higher pneumatic efficiency by utilizing the influence of power jet flow or slipstream. For transportation or special purpose unmanned aerial vehicles such as a drone, load launching is often required, and in order to avoid interference of power components, a front pull type pneumatic layout is generally adopted, in which a power unit has relatively high propulsion efficiency. Whether a forward pulling or backward pushing propulsion mode is adopted, the type of tasks which can be executed by the unmanned aerial vehicles in the two power arrangement modes is limited to a certain extent under the restriction of the installation position of a power system.

Disclosure of Invention

The invention provides an unmanned aerial vehicle with a power module capable of being interchanged in a forward pulling mode and a backward pushing mode, wherein the power module can be changed between the forward pulling mode and the backward pushing mode according to different flight tasks, so that the adaptability and the execution capacity of the unmanned aerial vehicle to the tasks are improved.

The invention provides an unmanned aerial vehicle with power modules capable of being interchanged in a forward pulling mode and a backward pushing mode, which comprises:

the modularized power machine comprises a modularized machine body, two fixed main wings arranged on two sides of the machine body, two tail wings arranged on two sides of the tail of the machine body and modularized power.

The modularized engine body can be disassembled into a front section of engine body, a middle section of engine body and a rear section of engine body, and the adjacent two sections of engine bodies are connected through bolts.

The modularized power can be flexibly arranged on the front section or the rear section of the aircraft body according to different flight task requirements, and accordingly a layout mode of forward pulling or backward pushing is formed.

The two main wings are symmetrically arranged in the middle section of the modularized engine body along the longitudinal direction of the engine body, and a pair of ailerons is symmetrically arranged on the rear edge of the outer sides of the two main wings.

The two tail wings are symmetrically arranged at the rear end of the middle section of the modularized engine body along the longitudinal direction of the engine body, and a pair of control surfaces is symmetrically arranged at the rear edges of the two tail wings.

Optionally, the main wing is a flat wing, a trapezoidal wing, or a swept back wing.

Optionally, the main wing is mounted on the fuselage in a position of an upper single wing, a middle single wing or a lower single wing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are of some embodiments of the invention, and are intended to provide further understanding of the invention and are not to be construed as limiting the invention.

Fig. 1 is a schematic view of a power module of an unmanned aerial vehicle capable of forward pulling/backward pushing according to an embodiment of the present invention, illustrating a flight state of the unmanned aerial vehicle in a forward pulling mode;

fig. 2 is a schematic view of a flight state of an unmanned aerial vehicle with a power module capable of being interchanged between forward pulling and backward pushing according to an embodiment of the present invention in a backward pushing mode;

fig. 3 is a schematic view of a modular structure of an unmanned aerial vehicle with power modules capable of being interchanged in a forward pulling mode and a backward pulling mode according to an embodiment of the present invention;

fig. 4 is a schematic view of a modular structure of an unmanned aerial vehicle with power modules capable of being interchanged between forward pulling and backward pushing in a backward pushing mode according to an embodiment of the present invention;

description of reference numerals:

1: a modular body front section; 2: a modular body middle section; 3: a rear section of the modular body; 4: an airfoil; 5: a tail wing; 6: an aileron; 7: an empennage control surface; 8: a propeller; 9: bolt hole

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

The power module that this embodiment provided can pull forward/push away interchangeable unmanned vehicles mainly includes: the modularized airplane comprises a modularized airplane body (comprising a front section 1, a middle section 2 and a rear section 3), wings 4, a tail wing 5, ailerons 6 and propellers 8.

The modular body can be quickly disassembled into a front part, a middle part and a rear part, and adjacent body sections are connected through bolts 9 (shown in figure 3). When the unmanned aerial vehicle flies in a forward-pulling mode to meet the specific task requirements, as shown in fig. 1 and 3, the modular engine body front section 1 is used for installing a power system, an engine is arranged in the engine body front section, and a conformal paddle cover is adopted at a propeller hub to maintain the pneumatic appearance of the whole aircraft. The middle modular body segment 2 and the rear modular body segment 3 are used for mounting airborne electronic equipment, oil tanks, task loads and the like. When the unmanned aerial vehicle needs to fly in a backward-pushing mode to meet specific tasks, as shown in fig. 2 and 4, the modular power system is installed at the rear section 3 of the modular body, a conformal paddle cover is adopted at the hub of the tail-pushing propeller to maintain the aerodynamic shape of the whole aircraft, and the front section 1 and the middle section 2 of the modular body are used for installing airborne equipment, task loads and the like.

Alternatively, the cross-section of the modular body is circular, which allows the circular cross-section body to have a minimum surface area for the same body volume, thereby minimizing the frictional resistance of the body. If a circular cross section cannot be adopted due to some special conditions, other cross section shapes can be selected, and the cross section shape of the modular body (including the front section 1, the middle section 2 and the rear section 3) is not limited in this embodiment.

Optionally, the front, middle and rear sections of the fuselage skins of the modular airframe can all be made of carbon fiber materials, so that the bearing capacity of the fuselage is enhanced, and the total weight of the fuselage is effectively reduced. The structure frame of the modularized machine body mainly comprises an aluminum frame, an aluminum reinforcing frame and an aluminum stringer; the middle section 2 of the machine body is provided with a navigation/flight control system, a task load, a power supply and other devices, and the front section 1 and the rear section 3 of the machine body can be correspondingly provided with a propeller, an engine, a task load or airborne equipment and the like according to the task requirement.

The wing 4 is used for providing lift force for the unmanned aerial vehicle in the process of flat flight, the geometric shape of the wing can be a flat wing, a trapezoidal wing and other geometric shapes, and the geometric shape of the wing 4 is not limited in the embodiment.

Alternatively, the tail 5 may be a horizontal tail, a V-tail, or other forms. The V-shaped tail has both functions of a vertical tail and a horizontal tail, and the generated interference resistance is low, and the arrangement of the tail 5 is not limited in this embodiment.

Optionally, the power module of the unmanned aerial vehicle provided by the embodiment of the invention can be pulled forwards or pushed backwards, a rocket boosting mode can be adopted in the takeoff stage of the unmanned aerial vehicle, and a parachute landing mode can be adopted for recovery. The recovery system is composed of an umbrella opening mechanism, a main umbrella, a falling joint and the like, wherein the parachute is a circular parachute and is arranged in the middle section 2 of the modularized machine body. If rocket assisted take-off and parachuting recovery are not allowed due to some special factors, a running take-off and landing mode can be selected, and the take-off and landing mode of the unmanned aerial vehicle is not limited in the embodiment.

The unmanned aerial vehicle with the power module capable of being interchanged between forward pulling and backward pushing provided by the embodiment of the invention is provided with two pairs of forward pulling propellers and backward pushing propellers. The geometrical size and the performance of the two propellers can be different according to different flight missions. When the unmanned aerial vehicle flies flatly by adopting a forward propeller pulling mode, the engine is arranged in the front section 1 of the modularized body, and the propeller hub of the propeller adopts the shape-preserving propeller cover, so that the inflow uniformity and the slip flow uniformity of the propeller are ensured, and the propeller is finally ensured to have higher propelling efficiency. When the unmanned aerial vehicle flies horizontally in a backward pushing mode, the propeller is arranged in the rear section 3 of the modularized machine body, and the speed of wing turbulence is accelerated under the suction action of the propeller blades in front of the propeller disc, so that the lift force of the wings and the lift-drag ratio of the whole aircraft are improved. The flexible exchange of the two power arrangement modes of the push-back type and the pull-front type can effectively improve the adaptability of the unmanned aerial vehicle to different task types.

Finally, it should be noted that: the above embodiments are merely illustrative of the technical solutions of the present invention, and not restrictive; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the present invention may be modified in various ways, or equivalents may be substituted for some or all of the features thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (1)

1. An interchangeable power module pull-forward/push-back unmanned aerial vehicle, comprising: the modularized power machine comprises a modularized front, middle and rear three-section type machine body and modularized power arranged on the machine body; according to different task requirements, the modular power can be arranged on the front section of the modular machine body to form a front-pull type layout or the modular power can be arranged on the rear section of the machine body to form a tail-push type layout.

Images