CN114905903A - Sea-air dual-purpose navigation method of wing aircraft - Google Patents
Sea-air dual-purpose navigation method of wing aircraft Download PDFInfo
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- CN114905903A CN114905903A CN202210503327.5A CN202210503327A CN114905903A CN 114905903 A CN114905903 A CN 114905903A CN 202210503327 A CN202210503327 A CN 202210503327A CN 114905903 A CN114905903 A CN 114905903A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
- B60F5/00—Other convertible vehicles, i.e. vehicles capable of travelling in or on different media
- B60F5/02—Other convertible vehicles, i.e. vehicles capable of travelling in or on different media convertible into aircraft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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Abstract
The invention relates to a sea-air dual-purpose navigation method of a wing aircraft, wherein the wing aircraft comprises an aircraft shell with a front strip-shaped structure and a rear strip-shaped structure, wings are rotatably arranged in the middle of the bottom surface of the aircraft shell towards two sides, and fan blades are arranged in the wings and driven to rotate by a propulsion motor; a buoyancy adjusting water tank is also arranged in the aircraft shell; the dual-purpose navigation method comprises two running states of underwater navigation and air flight, wherein the front ends of the forward directions of the fan wing aircraft are opposite under the two running states; when the underwater vehicle sails in water, the magnitude of the negative lift force is adjusted by matching with the rotation speed adjustment of the propulsion motor, so that the floating or submerging is realized; during air flight, the wings rotate 180 degrees relative to the outer shell of the aircraft, the advancing end of the aircraft is turned, the positive lift force is adjusted by matching with the rotation speed adjustment of a propulsion motor, and the adjustment of the flight height is realized; therefore, the marine and aerial dual-purpose navigation of the wing aircraft is realized, the maintenance is convenient, the reliability is high, and the practicability is good.
Description
Technical Field
The invention relates to the technical field of sea and air dual-purpose aircrafts, in particular to a sea and air dual-purpose navigation method of a fan wing aircraft.
Background
In the prior art, a water-air dual-purpose unmanned aerial vehicle generally adopts a plurality of groups of vertical propellers as propellers, so that the number of the propellers is large, the maintenance is difficult, the reliability is reduced, and the control difficulty is large; on the other hand, the unmanned aerial vehicle along the axial direction of the propeller has the largest resistance, so that the power consumption of the water-air dual-purpose unmanned aerial vehicle is large in the sailing process; simultaneously, empty dual-purpose unmanned aerial vehicle of water requires rigorously to the dead weight, needs the dead weight enough light, has greatly restricted the carrying on of detecting equipment, has reduced unmanned aerial vehicle's operational capability.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides a marine and aerial dual-purpose navigation method of a fan wing aircraft with a reasonable structure, so that marine and aerial dual-purpose navigation of the fan wing aircraft is realized, and the marine and aerial dual-purpose navigation method is convenient to maintain, high in reliability and good in practicability.
The technical scheme adopted by the invention is as follows:
a wing aircraft comprises an aircraft shell with a front strip-shaped structure and a rear strip-shaped structure, wings are rotatably arranged in the middle of the bottom surface of the aircraft shell towards two sides, fan blades are arranged in the wings, the fan blades are driven by a propulsion motor to rotate, and eccentric vortexes are formed at the rotating fan blades by the wings; a buoyancy adjusting water tank is further installed inside the aircraft shell;
the dual-purpose navigation method comprises two operation states of underwater navigation and air flight, wherein the front ends of the forward directions of the fan wing aircraft are opposite under the two operation states;
the operation method of underwater navigation comprises the following steps:
when the wing aircraft is positioned on the water surface, opening a sea valve and a vent valve of the buoyancy adjusting water tank, filling water into the buoyancy adjusting water tank, and gradually sinking the wing aircraft until the wings are completely sunk into the water;
the propulsion motor works, the fan blades rotate at a speed higher than the preset underwater speed, and negative lift force downwards and thrust force back to the tail of the wing are generated on the wing, so that the fan wing aircraft rapidly sails forwards and downwards until the preset depth is reached;
adjusting the rotating speed of a propulsion motor, and reducing the rotating speed of fan blades to a preset underwater rotating speed, so that the negative lift force generated by the wings is equal to the underwater positive buoyancy force of the fan wing vehicle, and the fan wing vehicle stops submerging and navigates at a fixed depth;
after the underwater navigation is finished, the rotating speed of a propulsion motor is reduced or closed, fan blades run at a speed far lower than the preset underwater rotating speed or even stop rotating, and the fan wing aircraft quickly floats to the water surface under the action of the positive buoyancy of the fan wing aircraft;
the operation method of the air flight comprises the following steps:
when the wing aircraft floats to the water surface from the underwater, a sea valve and an air valve of a buoyancy adjusting water tank are opened, water in the buoyancy adjusting water tank is emptied by a water pump, the wing aircraft continuously floats until the wing aircraft completely floats out of the water surface, and wings exposed out of the water surface rotate upwards by 180 degrees relative to an aircraft outer shell under the drive of a conversion motor, so that the tail part of each wing is reversed relative to the aircraft outer shell;
the propulsion motor works, the fan blades rotate at a speed higher than a preset rotation speed in the air, and upward positive lift force and thrust force back to the tail of the wing are generated on the wing, so that the fan wing aircraft quickly flies forward and upward until the preset height is reached;
adjusting the rotating speed of a propulsion motor, and reducing the rotating speed of fan blades to a preset rotating speed in the air, so that the positive lift force generated by wings is equal to the self gravity of a fan wing aircraft, and the fan wing aircraft stops rising to perform fixed-height flight;
after the air flight is finished, the rotating speed of the propulsion motor is reduced, the fan blades run at a speed lower than the preset rotating speed in the air, and the fan wing aircraft slowly falls to the water surface under the action of self gravity.
As a further improvement of the above technical solution:
the front end part and the rear end part of the outer shell of the aircraft are the same in shape and are symmetrically arranged.
When the fan wing aircraft navigates at a fixed depth underwater, the rotating speed of the fan blades is increased or reduced, the negative lift force is changed to be larger or smaller than the positive buoyancy force, so that the depth of the fan wing aircraft under the water is adjusted, and the fan wing aircraft dives or floats upwards;
similarly, when the wing aircraft navigates at a fixed height in the air, the height of the wing aircraft in the air is adjusted by increasing or decreasing the rotating speed of the fan blades and changing the positive lift force to be greater or smaller than the self gravity of the wing aircraft, so that the flying height is increased or decreased.
The buoyancy adjusting water tank is positioned in the middle of the aircraft shell, battery bins are respectively arranged in the aircraft shell in front of and behind the buoyancy adjusting water tank, a battery rack is movably arranged in each battery bin, and battery packs are arranged in each battery rack; the battery frame moves in the battery bin along the length direction of the aircraft shell under the driving of the mobile motor, the gravity center position of the fan wing aircraft is adjusted through the movement of the battery frame, and the trim angle of the fan wing aircraft is adjusted.
The output end of the mobile motor is provided with a lead screw, the lead screw and the battery rack are installed in a matched mode through a screw pair, a guide rail is installed between the battery rack and the wall surface of the battery bin, and the length direction of the guide rail is consistent with the length direction of the aircraft shell.
The rotation speed differential of the fan blades in the wings on two sides is used for steering the advancing direction.
Under the underwater navigation and the air flight state, the rotation directions of the fan blades relative to the outer shell of the aircraft are the same, and the lifting force and the thrust force in opposite directions are generated through 180-degree steering of the wings.
The fan blades are arranged at the other end opposite to the tail end of the wing, when the aircraft sails in water and flies in the air, the end parts of the wing where the fan blades are arranged face the incoming flow direction, and the rotating axial direction of the fan blades is vertical to the length direction of the outer shell of the aircraft.
The axis of rotation of the wing relative to the aircraft skin is aligned with the axis of rotation of the fan blades, and this line is located vertically at the center of the aircraft skin in its length direction.
The end part of the wing, which is provided with the fan blade, is an arc surface coaxial with the axis of the fan blade, and the upper surface and the lower surface of the wing both start from the arc surface and are converged into a sharp angle towards the tail end; one of the upper surface and the lower surface of the wing is of a horizontal plane structure, and the other surface of the wing is of an outward convex curved surface or inclined plane structure; the horizontal plane structure is the upper surface when navigating underwater, and the horizontal plane structure is the lower surface when flying in the air.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, and when sailing in water, the negative lift force is adjusted by matching with the rotation speed adjustment of the propulsion motor to realize floating or diving; during air flight, the wings rotate 180 degrees relative to the outer shell of the aircraft, the advancing end of the aircraft is turned, the positive lift force is adjusted by matching with the rotation speed adjustment of a propulsion motor, and the adjustment of the flight height is realized; therefore, the marine and aerial dual-purpose navigation of the wing aircraft is realized, the maintenance is convenient, the reliability is high, and the practicability is good;
the invention also comprises the following advantages:
the blades are arranged in the arc surface at the end part of the wing to form an eccentric vortex, negative lift force and thrust force are generated under water to offset positive buoyancy force and water resistance of a fan wing aircraft, and positive lift force and thrust force are generated in the air to offset self gravity and air resistance of the fan wing aircraft, so that underwater or air flight is realized, and the lift force and the thrust force can be realized by changing the rotation speed of the blades, so that the device is simple, convenient and reliable;
two groups of fan blades are symmetrically arranged on two sides of an aircraft to respectively form two groups of fan wing propellers; the number of the fan wing propellers is small, the maintenance is convenient, the reliability is high, and the operation and the control are simple;
the fan wing propeller can simultaneously generate lift force and thrust force as long as the fan wing propeller starts to work, so that the rapid power submergence or water surface short-distance takeoff of the aircraft is realized, and the medium switching time is short;
the thrust generated by the aircraft is along the longitudinal direction of the aircraft, so that the resistance is small and the power consumption is low;
the wing propeller can generate great lift force, so that the aircraft has low requirement on dead weight, more types of detection equipment can be carried, the operation capability of the aircraft is greatly improved, and the use convenience and flexibility of the wing aircraft are greatly improved;
because the wing aircraft has positive buoyancy, even if the wing aircraft is out of control, the wing aircraft can float upwards to produce water after the energy is exhausted, the wing aircraft is not easy to lose, and the safety of underwater navigation is ensured.
Drawings
Fig. 1 is a plan view of the present invention in an underwater traveling state.
Fig. 2 is a front view of the present invention in an underwater navigation state.
Fig. 3 is a top view of the present invention in an airborne flight condition.
Fig. 4 is a front view of the present invention in an airborne flight condition.
Fig. 5 is a schematic view of the installation of the mobile motor and the battery rack in the battery compartment according to the present invention.
FIG. 6 is a schematic view of the installation of the wing and fan blade of the present invention.
FIG. 7 is a schematic view of a flow field at the wing in a sailing state.
FIG. 8 is a schematic view of a pressure field simulation at a wing in a sailing state according to the present invention.
Wherein: 1. an airfoil; 2. an aircraft hull; 3. a battery pack; 4. a battery compartment; 5. a moving motor; 6. a propulsion motor; 7. a fan blade; 8. a switching motor; 9. a buoyancy adjusting water tank; 10. a screw rod; 11. a guide rail; 12. a battery holder; 101. a circular arc surface; 102. a horizontal planar structure; 103. the inclined plane structure.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the marine and aerial dual-purpose navigation method of the wing craft of the embodiment includes a craft hull 2 having a front and rear elongated structure, wings 1 are rotatably mounted in the middle of the bottom surface of the craft hull 2 toward two sides, blades 7 are mounted in the wings 1, the blades 7 are driven by a propulsion motor 6 to rotate, and the wings 1 form eccentric vortexes at the rotating blades 7; a buoyancy adjusting water tank 9 is also arranged in the outer shell 2 of the aircraft;
the dual-purpose navigation method comprises two operation states of underwater navigation and air flight, wherein the front ends of the forward directions of the fan-wing aircrafts are opposite in the two operation states, namely the front end of the forward direction during underwater navigation is the rear end of the forward direction during air flight;
as shown in fig. 1 and 2, the underwater navigation operation method comprises the following steps:
when the wing aircraft is positioned on the water surface, opening a sea valve and a vent valve of the buoyancy adjusting water tank 9, filling water into the buoyancy adjusting water tank 9, and gradually sinking the wing aircraft until the wings 1 are completely sunk into the water;
the propulsion motor 6 works, the fan blades 7 rotate at a speed higher than the preset underwater speed, and the wings 1 generate downward negative lift force and thrust force back to the tail parts of the wings 1, so that the fan wing aircraft rapidly sails forward and downward until reaching the preset depth;
adjusting the rotating speed of a propulsion motor 6, and reducing the rotating speed of fan blades 7 to an underwater preset rotating speed, so that the negative lift force generated by the wings 1 is equal to the underwater positive buoyancy force of the fan wing aircraft, and the fan wing aircraft stops diving and sails at a fixed depth;
after the underwater navigation is finished, the rotating speed of the propulsion motor 6 is reduced or closed, the fan blades 7 run at a speed far lower than the underwater preset rotating speed and even stop rotating, and the fan wing aircraft quickly floats to the water surface under the action of the positive buoyancy of the fan wing aircraft;
in this embodiment, when the buoyancy adjusting water tank 9 is filled with water, the wing aircraft can float on the water surface under the combined action of buoyancy and gravity, and at this time, the wing 1 and the fan blades 7 thereon are both submerged; when the buoyancy adjustment water tank 9 is emptied of water, the wing aircraft can float on the water surface under the combined action of buoyancy and gravity, and at the moment, the fan blades 7 on the wings 1 are exposed out of the water surface and are presented in the air.
As shown in fig. 3 and 4, the operation method of the air flight comprises the following steps:
when the wing aircraft floats upwards from the water to the water surface, a sea through valve and a vent valve of the buoyancy adjusting water tank 9 are opened, water in the buoyancy adjusting water tank 9 is emptied by a water pump, the wing aircraft continuously floats upwards until the wing aircraft completely floats out of the water surface, and the wing 1 exposed out of the water surface is driven by the conversion motor 8 to rotate upwards 180 degrees relative to the aircraft hull 2, so that the tail part of the wing 1 is reversed towards the direction relative to the aircraft hull 2;
the propulsion motor 6 works, the fan blades 7 rotate at a speed higher than a preset rotation speed in the air, and the wing 1 generates upward positive lift force and thrust force back to the tail part of the wing 1, so that the fan wing aircraft quickly flies forward and upward until the preset height is reached;
adjusting the rotating speed of a propulsion motor 6, and reducing the rotating speed of fan blades 7 to a preset rotating speed in the air, so that the positive lift force generated by the wings 1 is equal to the self gravity of the fan wing aircraft, and the fan wing aircraft stops rising to perform fixed-height flight;
after the air flight is finished, the rotating speed of the propulsion motor 6 is reduced, the fan blades 7 run at a speed lower than the preset rotating speed in the air, and the fan wing aircraft slowly falls to the water surface under the action of the self gravity.
In the embodiment, when the underwater vehicle sails in water, the magnitude of the negative lift force is adjusted by matching with the rotation speed adjustment of the propulsion motor 6, so that the floating or submerging is realized; during air flight, the wings 1 rotate 180 degrees relative to the outer shell 2 of the aircraft, the advancing end of the aircraft is turned, and the positive lift force is adjusted by matching with the rotation speed adjustment of the propulsion motor 6, so that the adjustment of the flight height is realized; therefore, the marine and aerial dual-purpose navigation of the wing aircraft is realized.
The front end and the rear end of the aircraft hull 2 are identical in shape and are symmetrically arranged, and the two ends are respectively used as the front ends of the advancing directions in different states of underwater navigation and air flight.
When the fan wing aircraft navigates at a fixed depth underwater, the rotating speed of the fan blades 7 is increased or reduced, the negative lift force is changed to be larger or smaller than the positive buoyancy force, so that the depth of the fan wing aircraft under the water is adjusted, and the fan wing aircraft dives or floats upwards;
similarly, when the wing aircraft navigates at a fixed height in the air, the rotating speed of the fan blades 7 is increased or reduced, and the positive lift force is changed to be larger or smaller than the gravity of the wing aircraft, so that the height of the wing aircraft in the air is adjusted, and the flying height is increased or reduced.
The buoyancy adjusting water tank 9 is positioned in the middle of the aircraft shell 2, the battery chambers 4 are respectively arranged in the aircraft shell 2 in front of and behind the buoyancy adjusting water tank 9, the battery frames 12 are movably arranged in the battery chambers 4, and the battery packs 3 are arranged in the battery frames 12; the battery rack 12 moves in the battery compartment 4 along the length direction of the vehicle outer housing 2 under the drive of the moving motor 5, the gravity center position of the wing vehicle is adjusted by the movement of the battery rack 12, the trim angle of the wing vehicle is adjusted, and the navigation posture is stabilized by adjusting the trim angle when the vehicle posture changes.
As shown in fig. 5, a screw rod 10 is installed at the output end of the moving motor 5, the screw rod 10 and a battery holder 12 are installed by screw pair matching, a guide rail 11 is installed between the battery holder 12 and the wall surface of the battery chamber 4, and the length direction of the guide rail 11 is consistent with the length direction of the aircraft housing 2.
In this embodiment, the moving motor 5 is operated, and the lead screw 10 is rotated, so that the battery holder 12 is moved in the longitudinal direction of the vehicle hull 2 with the guide rail 11 as a guide, thereby adjusting the position of the battery pack 3 with respect to the vehicle hull 2, adjusting the position of the center of gravity of the wing vehicle in the longitudinal direction, realizing adjustment of the trim angle, and stabilizing the attitude of the power assistance during navigation.
The steering in the advancing direction is carried out through the differential rotation speed of the fan blades 7 in the wings 1 on the two sides, so that the advancing steering in the air or underwater is realized.
Under the underwater navigation and air flight states, the rotation directions of the fan blades 7 relative to the outer shell 2 of the aircraft are the same, and the lift force and the thrust force in opposite directions are generated through 180-degree steering of the wings 1;
as shown in fig. 2, in the underwater navigation state, the rotation of the fan blade 7 is clockwise as shown in the figure, the lift force is downward negative lift force, the thrust force is rightward as shown by the arrow in the figure, and the navigation direction of the fan-wing aircraft under the thrust force is rightward as shown by the arrow in the figure;
as shown in fig. 4, in the airborne flight state, the rotation of the fan blades 7 is clockwise as shown in the drawing, the lift force is a positive upward lift force, the thrust force is leftward as shown by an arrow, and the direction of the flight of the wing vehicle under the thrust force is leftward as shown by an arrow.
The fan blade 7 is arranged at the other end opposite to the tail end of the wing 1, when the aircraft sails in water and flies in the air, the end part of the wing 1 where the fan blade 7 is arranged is opposite to the incoming flow direction, and the rotating axial direction of the fan blade 7 is vertical to the length direction of the outer shell 2 of the aircraft.
The axis of rotation of the wing 1 relative to the aircraft hull 2 is aligned with the axis of rotation of the fan blades 7, which is vertically centered in the length direction of the aircraft hull 2.
As shown in fig. 6, the end of the wing 1 where the fan blade 7 is installed is an arc surface 101 coaxial with the axis of the fan blade 7, and the upper and lower surfaces of the wing 1 both start from the arc surface 101 and meet to the tail end to form a sharp angle; the upper and lower surfaces of the wing 1, one of which is a horizontal plane structure 102, and the other is an outward convex curved surface or inclined surface structure 103; the horizontal planar structure 102 is an upper surface when navigating underwater, and the horizontal planar structure 102 is a lower surface when flying in air.
In this embodiment, the horizontal plane structure 102 is tangent to the arc surface 101, so that the connection surface and the horizontal plane structure 102 are located on the same plane, and are smooth and natural.
In this embodiment, the fan blades 7 are installed in the arc surface 101 at the end of the wing 1 to form an eccentric vortex, negative lift force and thrust force are generated under water to offset positive buoyancy force and water resistance of the fan wing aircraft, and positive lift force and thrust force are generated in the air to offset self gravity and air resistance of the fan wing aircraft, so that underwater or aerial flight is realized, and the lift force and the thrust force can be adjusted by changing the rotating speed of the fan blades 7, so that the operation is simple, convenient and reliable.
In this embodiment, two sets of fan blades 7 are symmetrically arranged on both sides of the aircraft to respectively form two sets of fan blade propellers; the number of the fan wing propellers is small, the maintenance is convenient, the reliability is high, and the operation and the control are simple;
the fan wing propeller can simultaneously generate lift force and thrust force as long as the fan wing propeller starts to work, so that the rapid power submergence or water surface short-distance takeoff of the aircraft is realized, and the medium switching time is short;
the thrust generated by the aircraft is along the longitudinal direction of the aircraft, so that the resistance is small and the power consumption is low;
as shown in fig. 7 and 8, which are schematic diagrams of a flow field and a CFD simulation pressure field when the fan blade propeller works, when an incoming flow of a medium reaches a leading edge of the wing 1 at a speed v, a part of the medium is accelerated by rotation of the fan blade 7 with a rotation speed n, and flows away from the inclined surface structure 103 of the wing 1 at a speed higher than the incoming flow to form a low-pressure region of the wing 1; the other part of the medium flows away along the horizontal plane structure 102 of the wing 1, and the speed of the part of the medium is slightly smaller than the incoming flow speed due to the suction effect of the fan blades 7, so that a high-pressure area of the wing 1 is formed; and a part of medium can rotate at a high speed in the fan blade 7 to form a low-pressure eccentric vortex in the fan blade 7, and finally the wing 1 generates a negative lifting force and a rightward thrust in the direction shown in the figure, wherein the force generated by the low-pressure eccentric vortex accounts for about 70% of the total force of the fan wing propeller.
The wing propeller can generate great lift force, so that the aircraft has low requirement on dead weight, more types of detection equipment can be carried, the operation capability of the aircraft is greatly improved, and the use convenience and flexibility of the wing aircraft are greatly improved.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (10)
1. A sea-air dual-purpose navigation method of a fan wing aircraft is characterized in that: the fan wing aircraft comprises an aircraft shell (2) which is of a front and back elongated structure, wings (1) are rotatably arranged in the middle of the bottom surface of the aircraft shell (2) towards two sides, fan blades (7) are arranged in the wings (1), the fan blades (7) are driven by a propulsion motor (6) to rotate, and eccentric vortexes are formed at the rotating fan blades (7) by the wings (1); a buoyancy adjusting water tank (9) is further mounted inside the aircraft shell (2);
the dual-purpose navigation method comprises two running states of underwater navigation and air flight, wherein the front ends of the advancing directions of the fan-wing aircraft are opposite in the two running states;
the operation method of underwater navigation comprises the following steps:
when the wing aircraft is positioned on the water surface, opening a sea valve and a vent valve of the buoyancy adjusting water tank (9), filling water into the buoyancy adjusting water tank (9), and gradually sinking the wing aircraft until the wings (1) are completely sunk into the water;
the propulsion motor (6) works, the fan blades (7) rotate at a speed higher than the preset underwater speed, and negative lift force downwards and thrust force back to the tail of the wing (1) are generated on the wing (1), so that the fan wing aircraft rapidly sails forwards and downwards until the preset depth is reached;
adjusting the rotating speed of a propulsion motor (6), and reducing the rotating speed of fan blades (7) to a preset underwater rotating speed, so that the negative lift force generated by the wings (1) is equal to the underwater positive buoyancy force of the fan wing aircraft, and the fan wing aircraft stops diving and sails at a fixed depth;
after underwater navigation is finished, the rotating speed of a propulsion motor (6) is reduced or the propulsion motor is closed, fan blades (7) run at a speed far lower than the preset rotating speed underwater or even stop rotating, and a fan wing aircraft quickly floats to the water surface under the action of self positive buoyancy;
the operation method of the air flight comprises the following steps:
when the wing aircraft floats to the water surface from the underwater, a sea through valve and an air vent valve of the buoyancy adjusting water tank (9) are opened, water in the buoyancy adjusting water tank (9) is emptied by a water pump, the wing aircraft continues to float until the wing aircraft completely floats out of the water surface, and the wing (1) exposed out of the water surface rotates upwards 180 degrees relative to the aircraft shell (2) under the driving of a conversion motor (8), so that the tail part of the wing (1) is reversed towards the direction relative to the aircraft shell (2);
the propulsion motor (6) works, the fan blades (7) rotate at a speed higher than a preset rotation speed in the air, and the upward positive lift force and the thrust force back to the tail part of the wing (1) are generated on the wing (1), so that the fan wing aircraft quickly flies forward and upward until the preset height is reached;
adjusting the rotating speed of a propulsion motor (6), and reducing the rotating speed of fan blades (7) to a preset rotating speed in the air, so that the positive lift force generated by the wings (1) is equal to the gravity of the wing aircraft, and the wing aircraft stops rising and performs fixed-height flight;
after the air flight is finished, the rotating speed of the propulsion motor (6) is reduced, the fan blades (7) run at a speed lower than the preset rotating speed in the air, and the fan wing aircraft slowly falls to the water surface under the action of the self gravity.
2. The method for sea-air navigation of a fan-wing aircraft according to claim 1, wherein: the shapes of the front end part and the rear end part of the outer shell (2) of the aircraft are the same and are symmetrically arranged.
3. The method for sea-air navigation of a fan-wing aircraft according to claim 1, wherein: when the fan wing aircraft navigates at a fixed depth underwater, the rotating speed of the fan blades (7) is increased or reduced, the negative lift force is changed to be larger or smaller than the positive buoyancy force, the underwater depth of the fan wing aircraft is adjusted, and the fan wing aircraft dives or floats upwards;
similarly, when the wing aircraft navigates at a fixed height in the air, the rotating speed of the fan blades (7) is increased or reduced, the positive lift force is changed to be larger or smaller than the gravity of the wing aircraft, the height of the wing aircraft in the air is adjusted, and the flying height is increased or reduced.
4. The method for sea-air navigation of a fan-wing aircraft according to claim 1, wherein: the buoyancy adjusting water tank (9) is positioned in the middle of the aircraft shell (2), battery bins (4) are respectively arranged in the aircraft shell (2) in front of and behind the buoyancy adjusting water tank (9), a battery rack (12) is arranged in each battery bin (4), and a battery pack (3) is arranged in each battery rack (12); the battery rack (12) is driven by the mobile motor (5) to move in the battery bin (4) along the length direction of the aircraft shell (2), the gravity center position of the fan wing aircraft is adjusted through the movement of the battery rack (12), and the trim angle of the fan wing aircraft is adjusted.
5. The method for sea-air navigation of a fan-wing aircraft according to claim 4, wherein: the aircraft is characterized in that a screw rod (10) is installed at the output end of the mobile motor (5), the screw rod (10) and a battery rack (12) are installed in a matched mode through a screw pair, a guide rail (11) is installed between the battery rack (12) and the wall surface of the battery bin (4), and the length direction of the guide rail (11) is consistent with the length direction of the aircraft shell (2).
6. The method for sea-air navigation of a fan-wing aircraft according to claim 1, wherein: the steering in the advancing direction is carried out by the rotating speed differential of the fan blades (7) in the wings (1) on the two sides.
7. The method for sea-air navigation of a fan-wing aircraft according to claim 1, wherein: under the underwater navigation and air flight states, the rotation directions of the fan blades (7) relative to the outer shell (2) of the aircraft are the same, and the lift force and the thrust force in opposite directions are generated by 180-degree steering of the wings (1).
8. The method for sea-air navigation of a fan-wing aircraft according to claim 1, wherein: the fan blade (7) is arranged at the other end opposite to the tail end of the wing (1), when the aircraft sails in water and flies in the air, the end part of the wing (1) where the fan blade (7) is located faces the incoming flow direction, and the rotating axial direction of the fan blade (7) is vertical to the length direction of the aircraft outer shell (2).
9. The method for sea-air navigation of a fan-wing aircraft according to claim 8, wherein: the rotation axial direction of the wing (1) relative to the outer shell (2) of the aircraft and the rotation axial direction of the fan blade (7) are positioned on the same straight line, and the straight line is vertically positioned at the center of the length direction of the outer shell (2) of the aircraft.
10. The method for sea-air navigation of a fan-wing aircraft according to claim 8, wherein: the end part of the fan blade (7) mounted on the wing (1) is an arc surface coaxial with the axis of the fan blade (7), and the upper surface and the lower surface of the wing (1) both start from the arc surface and are converged to form a sharp angle towards the tail end; one of the upper surface and the lower surface of the wing (1) is of a horizontal plane structure, and the other one of the upper surface and the lower surface is of an outward convex curved surface or an inclined plane structure; the horizontal plane structure is an upper surface when navigating underwater, and a lower surface when flying in the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210503327.5A CN114905903B (en) | 2022-05-10 | 2022-05-10 | Sea-air dual-purpose navigation method of fan-wing aircraft |
Applications Claiming Priority (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117657374A (en) * | 2024-01-31 | 2024-03-08 | 青岛鹏晟海洋装备有限公司 | Self-adaptive water surface underwater vehicle |
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| CN110182342A (en) * | 2019-06-24 | 2019-08-30 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of deep sea fan wing submariner device |
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| CN113086143A (en) * | 2021-04-27 | 2021-07-09 | 中国科学院沈阳自动化研究所 | Fan wing propulsion underwater vehicle and navigation method thereof |
| WO2021248268A1 (en) * | 2020-06-08 | 2021-12-16 | 天津大学 | Variable-configuration, dual-navigation-state, long-voyage unmanned marine vehicle driven by natural environment fluid |
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| WO2020226719A1 (en) * | 2019-02-18 | 2020-11-12 | Livieratos Evangelos | Breaching for submergible fixed wing aircraft |
| CN110182342A (en) * | 2019-06-24 | 2019-08-30 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of deep sea fan wing submariner device |
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| CN117657374A (en) * | 2024-01-31 | 2024-03-08 | 青岛鹏晟海洋装备有限公司 | Self-adaptive water surface underwater vehicle |
| CN117657374B (en) * | 2024-01-31 | 2024-04-16 | 青岛鹏晟海洋装备有限公司 | Self-adaptive water surface underwater vehicle |
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| CN114905903B (en) | 2023-05-12 |
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