CN115077841A - Fixed-angle separating mechanism for external stores of airplane - Google Patents
Fixed-angle separating mechanism for external stores of airplane Download PDFInfo
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- CN115077841A CN115077841A CN202210586445.7A CN202210586445A CN115077841A CN 115077841 A CN115077841 A CN 115077841A CN 202210586445 A CN202210586445 A CN 202210586445A CN 115077841 A CN115077841 A CN 115077841A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 230000001154 acute effect Effects 0.000 claims abstract description 4
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- 230000008569 process Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 240000005002 Erythronium dens canis Species 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
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- 238000012986 modification Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 238000001612 separation test Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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Abstract
The invention relates to the technical field of an aircraft external hanging object separation wind tunnel test device, and provides an aircraft external hanging object fixed angle separation mechanism, wherein the external hanging object realizes front end locking through the matching of an upper locking part and a lower locking part, and realizes rear end locking of the external hanging object through the matching of an arc-shaped groove and a locking surface on an upper connecting piece and an arc-shaped bulge and an inclined surface on a lower connecting piece; the top of the lower connecting piece is provided with an inclined plane, the front end of the inclined plane is higher than the rear end of the inclined plane, the bottom of the upper connecting piece is sequentially provided with an inclined locking surface and an unlocking surface from front to back, the inclined locking surface and the inclined plane have the same inclination angle, the unlocking surface is parallel to the flight direction of the airplane, and the angle of an acute angle formed between the inclined locking surface and the unlocking surface is delta; when the front end of the outer hanging object is unlocked instantly, the outer hanging object and the lower connecting piece integrally rotate delta around the circle center of the arc-shaped groove, the inclined surface is attached to the unlocking surface to unlock the rear end, and therefore the outer hanging object is separated from the airplane in a posture of a fixed angle (delta) with the initial state.
Description
Technical Field
The invention relates to the technical field of an aircraft external hanging object separation wind tunnel test device, in particular to an aircraft external hanging object fixed angle separation mechanism.
Background
Aircraft hangings (or so-called external load compartments) are of a wide variety, such as fuel bells, thrusters, bombs, torpedoes, etc., which are mounted to the aircraft's pylon via an interface. Under certain specific conditions, an experiment for unlocking and separating the aircraft stores from the hangers according to a specific angle and a specific posture is called a wind tunnel separation experiment, and the separation experiment aims to research the safety and the reliability of the separation of the aircraft stores from a mother aircraft in a wind tunnel, determine the influence of various parameters on the separation track and the separation posture of the stores, determine the parameter range of the safety separation and provide a basis for the layout design and the separation parameters of the aircraft stores.
The separation test needs to be designed and manufactured for a wind tunnel separation test model, and the wind tunnel test model needs to be designed with a separation mechanism, the existing separation mechanism has a complex structure, and the problem that the unlocking and separation of an aircraft external hanger from a hanging rack according to a specific angle and posture are difficult to realize is solved.
Disclosure of Invention
The invention aims to provide an angle-fixed separating mechanism for an aircraft external store, which enables the external store to be unlocked and separated from a hanging rack according to a specific angle and a specific posture.
The embodiment of the invention is realized by the following technical scheme:
the angle-fixed separating mechanism for the aircraft outer hanging object comprises a hanging rack fixedly connected with the bottom of the aircraft, wherein the front end of the hanging rack is provided with an upper locking part, the front end of the outer hanging object is provided with a lower locking part, and the front end of the outer hanging object is locked or unlocked through the matching action of the upper locking part and the lower locking part;
the rear end of the hanging rack is provided with an upper connecting piece, the rear end of the outer hanging object is provided with a lower connecting piece, the bottom of the upper connecting piece is provided with an arc-shaped groove with a backward notch, the top of the lower connecting piece is provided with an arc-shaped bulge matched with the arc-shaped groove, the top of the lower connecting piece is provided with an inclined plane, the front end of the inclined plane is higher than the rear end of the inclined plane, the bottom of the upper connecting piece is sequentially provided with an inclined locking plane and an unlocking plane from front to back, the inclined angle of the inclined locking plane is the same as that of the inclined plane, the unlocking plane is parallel to the flight direction of the airplane, and the angle of an acute angle formed between the inclined locking plane and the unlocking plane is delta;
when the arc-shaped groove is matched with the arc-shaped protrusion, the inclined plane is attached to the inclined locking surface to realize locking, when the outer hanging object is separated in the flying process of the airplane, the upper locking part and the lower locking part are unlocked instantly, and after the outer hanging object and the lower connecting piece are integrally rotated delta around the circle center of the arc-shaped groove, the inclined plane is attached to the unlocking surface to realize unlocking.
Optionally, the rear end of the hanger is provided with a first clamping groove matched with the upper connecting piece, and the upper connecting piece is connected with the bottom of the first clamping groove through a screw.
Optionally, a second clamping groove matched with the lower connecting piece is formed in the top of the plug-in, and the lower connecting piece is connected with the bottom of the second clamping groove through a screw.
Optionally, go up the locking part including go up the retaining member and drive retaining member pivoted angle controller, angle controller installs the inside of stores pylon, go up the retaining member and rotate with the stores pylon and be connected, the upper end of going up the retaining member is connected with angle controller's output, the lower extreme lateral wall of going up the retaining member is equipped with a plurality of dogteeth of going up along the circumferencial direction, lower locking part is including lower retaining member, lower retaining member and external object fixed connection, and the top of lower retaining member is equipped with a plurality of dogteeth down along the circumferencial direction, realizes locking when the top butt of the bottom of last dogtooth and dogtooth down, goes up the retaining member and rotates and to realize the unblock when the clearance between the dogtooth under to.
Optionally, on the same arc, the arc length of the upper convex tooth is smaller than the arc length of the gap between two adjacent lower convex teeth.
Optionally, the outer edge of the upper convex tooth is matched with the inner wall of the lower connecting piece, and the outer edge of the lower convex tooth is matched with the outer wall of the upper connecting piece.
Optionally, the output end of the angle controller is connected with a spline, and the output end of the upper locking piece is provided with a spline groove.
Optionally, the upper retaining member is connected to the hanger by a flat bearing.
Optionally, the angle controller is a steering engine or a servo motor.
Optionally, the bottom of the hanger is attached to the top of the outer hanger.
The invention has at least the following advantages and beneficial effects: according to the invention, when the outer hanging object is locked, the front end of the outer hanging object is locked through the matching of the upper locking part and the lower locking part, and the rear end of the outer hanging object is locked through the matching of the arc-shaped groove and the locking surface on the upper connecting piece and the arc-shaped bulge and the inclined surface on the lower connecting piece; when the external hanging object is unlocked and separated, the upper locking part and the lower locking part are unlocked to unlock the front end of the external hanging object, the external hanging object flies along with the airplane under the action of inertia at the moment of unlocking the front end of the external hanging object, the rear end of the external hanging object is not unlocked and separated, meanwhile, under the action of self weight at the moment, after the whole of the external hanging object and the lower connecting piece rotates delta around the center of the arc-shaped groove, the inclined surface on the lower connecting piece is attached to the unlocking surface and cannot rotate continuously, the airplane flies forwards continuously, the external hanging object is unlocked by the downward degree of freedom, the external hanging object is separated from the airplane in a posture which is at a fixed angle (delta) with the initial state, and the external hanging object can be unlocked and separated from the hanging frame according to the specific angle and posture by selecting the proper angle delta according to actual needs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of an aircraft external store fixed-angle separation mechanism provided by the present invention;
FIG. 2 is a cross-sectional view of the hanger and the outer hanger (front locked state);
fig. 3 is a sectional view of the hanger and the enclosure (front end unlocked state);
FIG. 4 is an enlarged view of FIG. 2 at A;
FIG. 5 is an exploded view of the upper and lower locking members;
FIG. 6 is an enlarged view of FIG. 2 at B;
FIG. 7 is an enlarged view at C of FIG. 6;
FIG. 8 is an enlarged view of the mating of the upper and lower connectors (unlocked state);
icon: 1-airplane, 2-pylon, 3-upper locking part, 301 a-upper convex tooth, 302-angle controller, 303-bracket, 4-lower locking part, 401 a-lower convex tooth, 5-upper connecting piece, 501-arc groove, 502-inclined locking surface, 503-unlocking surface, 6-lower connecting piece, 601-arc bulge, 602-inclined surface, 7-plane bearing, 8-spline groove and 9-outer hanger.
Detailed Description
Referring to fig. 1-8, an aircraft external hanging object fixed angle separating mechanism includes a hanging rack 2 fixedly connected with the bottom of an aircraft 1, an upper locking part 3 is arranged at the front end of the hanging rack 2, a lower locking part 4 is arranged at the front end of an external hanging object 9, and the locking or unlocking of the front end of the external hanging object 9 is realized through the cooperation of the upper locking part 3 and the lower locking part 4.
In this embodiment, the upper locking part 3 includes an upper locking member 301 and an angle controller 302 for driving the upper locking member 301 to rotate, the angle controller 302 is installed inside the hanging rack 2, the upper end of the upper locking member 301 is connected with the output end of the angle controller 302, that is, the upper locking member can be driven to rotate by the angle controller 302, and the angle controller 302 can specifically be a steering engine or a servo motor, that is, the rotation angle of the output shaft can be accurately controlled.
Specifically, the inside of stores pylon 2 is equipped with the cavity, angle controller 302 passes through support 303 and installs in the bottom of cavity, go up retaining member 301 and rotate with stores pylon 2 and be connected, the below of cavity is equipped with the step hole, the cover is equipped with planar bearing 7 on going up retaining member 301, planar bearing 7 is supported by the bottom in step hole, when angle controller 302 drives retaining member 301 and rotates, go up the rolling friction of rotating friction conversion for the bearing between retaining member and the stores pylon 2, thereby reduced the turning torque that angle controller 302 bore.
Further, angle controller 302's output is connected with the spline, and the output of last clamping member 301 is equipped with spline groove 8, so set up for angle controller 302's output shaft only transmits the moment of torsion, and does not bear the axial force, plays the effect of protection angle controller 302.
The lower locking part 4 comprises a lower locking part 401, the lower locking part 401 is fixedly connected with the external hanging object 9, specifically, a stepped hole from bottom to top is formed in the external hanging object 9, the lower locking part 401 is fixed at the bottom of the stepped hole through a screw, the bottom of the hanging rack 2 is attached to the top of the external hanging object 9, and the influence on the stability of the external hanging object 9 caused by the air flow passing between the hanging rack 2 and the external hanging object 9 is avoided.
The side wall of the lower end of the upper locking piece 301 is provided with a plurality of upper convex teeth 301a along the circumferential direction, the top of the lower locking piece 401 is provided with a plurality of lower convex teeth 401a along the circumferential direction, when the bottom of the upper convex teeth 301a is abutted against the top of the lower convex teeth 401a, locking is achieved, furthermore, the outer edges of the convex teeth are matched with the inner wall of the lower connecting piece 6, and the outer edges of the lower convex teeth 401a are matched with the outer wall of the upper connecting piece 5, so that the radial freedom degree of the lower locking piece 401 is better limited; when needing the unblock, angle controller 302 drives locking member 301 and rotates, realizes the unblock when driving last dogtooth 301a rotatory clearance between the dogtooth 401a down, and further, on same circular arc, the arc length of last dogtooth 301a is less than two adjacent the arc length in clearance between the dogtooth 401a down, can make the dogtooth pass through the clearance between two adjacent dogteeth 401a smoothly to realize the unblock.
In addition, in this embodiment, the material of the upper convex tooth 301a is T8 steel, and the material of the lower convex tooth 401a is 30CrMnSiA steel, it is worth to be noted that the 30CrMnSiA steel has good processability, small processing deformation and quite good fatigue resistance, and is commonly used for various special wear-resistant parts of automobiles and airplanes 1, and after the processing, the roughness is reduced by polishing and grinding, and as the outer hanger 9 bears a large static friction force in a locked state between the upper convex tooth 301a and the lower convex tooth 401a under the action of its own weight and aerodynamic force, the friction coefficient can be reduced by selecting the above materials to make the upper convex tooth 301a and the lower convex tooth 401a, thereby reducing the rotational resistance.
In other embodiments of the present invention, the upper locking member 3 and the lower locking member 4 may be realized by other structures, for example, the lower locking member 4 may be a permanent magnet, the upper locking member 3 may be an electromagnet attracted to the permanent magnet, and on the premise that sufficient attraction is ensured, the front end of the hanging object 9 may be locked and unlocked by powering on and off the electromagnet. For another example, the lower locking part 4 may be a shaft fixedly connected to the external hanging object 9, the upper locking part 3 includes a sleeve and a locking shaft, the sleeve is fixed inside the hanging rack 2, the locking shaft simultaneously passes through the sleeve and the shaft in the radial direction, and the locking shaft is inserted and taken out by an electric push rod or a cylinder, and the front end of the external hanging object 9 can be locked and unlocked.
The rear end of the hanging rack 2 is provided with an upper connecting piece 5, the rear end of the plug-in 9 is provided with a lower connecting piece 6, the bottom of the upper connecting piece 5 is provided with an arc groove 501 with a backward notch, the top of the lower connecting piece 6 is provided with an arc protrusion 601 matched with the arc groove 501, the top of the lower connecting piece 6 is provided with an inclined plane 602, the front end of the inclined plane 602 is higher than the rear end of the inclined plane 602, the bottom of the upper connecting piece 5 is sequentially provided with an inclined locking plane 502 and an unlocking plane 503 from front to back, the inclined angles of the inclined locking plane 502 and the inclined plane 602 are the same, the unlocking plane 503 is parallel to the flight direction of the airplane 1, and the acute angle formed between the inclined locking plane 502 and the unlocking plane 503 is delta; when the arc-shaped groove 501 is matched with the arc-shaped protrusion 601, the inclined surface 602 is attached to the inclined locking surface 502 to realize locking, that is, the arc-shaped groove 501 is matched with the arc-shaped protrusion 601, and meanwhile, the inclined surface 602 is matched with the locking surface to limit two degrees of freedom of backward movement and downward movement of the external hanging object 9.
When the airplane 1 flies with the plug-in 9, the stress condition of the front end connection part of the plug-in 9 is as follows, only torque is transmitted between the angle controller 302 and the upper locking piece 301, the pull force of the plug-in 9 acts on the lower locking piece 401, the torque is transmitted to the upper locking piece 301 through the matching of the lower convex tooth 401a and the upper convex tooth 301a, the torque is transmitted to the plane bearing 7 through the upper locking piece 301, and the force is transmitted to the hanging rack 2 through the plane bearing 7; the stress condition of the rear end connection part of the external hanging object 9 is as follows, the gravity and aerodynamic force borne by the external hanging object 9 are transmitted to the upper connecting piece 5 through the lower connecting piece 6, the upper connecting piece 5 transmits the force to the hanging rack 2, namely, the stress of the body of the airplane 1 is finally transmitted by the hanging rack 2, and the stress stability and reliability of the external hanging object 9 in the flying process are kept.
When the outer hanging object 9 is unlocked and separated, the upper locking part 3 and the lower locking part 4 are unlocked to unlock the front end of the outer hanging object 9, at the moment of unlocking the front end of the outer hanging object 9, the outer hanging object 9 flies with the airplane 1 under the action of inertia, at the moment, the rear end of the outer hanging object 9 is not unlocked and separated, at the same time, under the action of self weight, the whole of the outer hanging object 9 and the lower connecting piece 6 rotates delta around the circle center of the arc-shaped groove 501, the inclined surface 602 on the lower connecting piece 6 is attached to the unlocking surface 503 and cannot rotate continuously, the airplane 1 flies forwards continuously, when the outer hanging object 9 has no inertia force, the downward freedom degree of the outer hanging object 9 is unlocked, the outer hanging object 9 is separated from the airplane 1 in a posture of a fixed angle (delta) with the initial state, and the proper angle delta is selected according to actual needs, so that the outer hanging object 9 can be unlocked and separated from the hanging frame 2 according to the specific angle and posture, thrown behind the aircraft 1.
The rear end of the hanging rack 2 is provided with a first clamping groove matched with the upper connecting piece 5, and the upper connecting piece 5 is connected with the bottom of the first clamping groove through a screw. The top of outer string thing 9 is equipped with and connects 6 complex second draw-in grooves down, and connects 6 through the bottom of screw with the second draw-in groove down, and the rotational degree of freedom of connecting piece 5 and connecting piece 6 down can be restricted well in the setting of first draw-in groove and second draw-in groove, and rethread screw connection makes things convenient for the dismouting.
In addition, in this embodiment, F141 is selected as the material of the upper connecting member 5 and the lower connecting member 6, and it should be noted that the material has high strength (up to 2300Mpa), and at the moment of unlocking the front end of the external hanging object 9, only the upper connecting member 5 and the lower connecting member 6 bear load, which is large, and the selection of the material can satisfy the harsh stress condition of the rear end of the external hanging object 9.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an angle separating mechanism is decided to aircraft external stores, includes stores pylon (2) with aircraft (1) bottom fixed connection, its characterized in that:
the front end of the hanger (2) is provided with an upper locking part (3), the front end of the outer hanging object (9) is provided with a lower locking part (4), and the front end of the outer hanging object (9) is locked or unlocked through the cooperation of the upper locking part (3) and the lower locking part (4);
the rear end of the hanger (2) is provided with an upper connecting piece (5), the rear end of the plug-in (9) is provided with a lower connecting piece (6), the bottom of the upper connecting piece (5) is provided with an arc-shaped groove (501) with a backward notch, the top of the lower connecting piece (6) is provided with an arc-shaped protrusion (601) matched with the arc-shaped groove (501), the top of the lower connecting piece (6) is provided with an inclined plane (602), the front end of the inclined plane (602) is higher than the rear end of the inclined plane (602), the bottom of the upper connecting piece (5) is sequentially provided with an inclined locking plane (502) and an unlocking plane (503) from front to back, the inclined angles of the inclined locking plane (502) and the inclined plane (602) are the same, the unlocking plane (503) is parallel to the flight direction of the airplane (1), and the angle of an acute angle formed between the inclined locking plane (502) and the unlocking plane (503) is delta;
when the arc-shaped groove (501) is matched with the arc-shaped protrusion (601), the inclined surface (602) is attached to the inclined locking surface (502) to achieve locking, when the outer hanging object (9) is separated in the flying process of the airplane (1), the upper locking part (3) is unlocked from the lower locking part (4), and after the outer hanging object (9) and the lower connecting piece (6) are integrally rotated delta around the circle center of the arc-shaped groove (501), the inclined surface (602) is attached to the unlocking surface (503) to achieve unlocking.
2. The aircraft pylon fixed angle separation mechanism of claim 1, wherein: the rear end of the hanging rack (2) is provided with a first clamping groove matched with the upper connecting piece (5), and the upper connecting piece (5) is connected with the bottom of the first clamping groove through a screw.
3. The aircraft pylon fixed angle separation mechanism of claim 1, wherein: the top of the outer hanging object (9) is provided with a second clamping groove matched with the lower connecting piece (6), and the lower connecting piece (6) is connected with the bottom of the second clamping groove through a screw.
4. The aircraft pylon fixed angle separating mechanism of any one of claims 1 to 3, wherein: the upper locking part (3) comprises an upper locking part (301) and an angle controller (302) for driving the upper locking part (301) to rotate, the angle controller (302) is installed inside the hanging rack (2), the upper locking part (301) is rotatably connected with the hanging rack (2), the upper end of the upper locking part (301) is connected with the output end of the angle controller (302), a plurality of upper convex teeth (301a) are arranged on the side wall of the lower end of the upper locking part (301) along the circumferential direction, the lower locking part (4) comprises a lower locking part (401), the lower locking part (401) is fixedly connected with the outer hanging object (9), the top of the lower locking part (401) is provided with a plurality of lower convex teeth (401a) along the circumferential direction, when the bottom of the upper convex tooth (301a) is abutted against the top of the lower convex tooth (401a), locking is achieved, and the upper locking piece (301) rotates to drive the upper convex tooth (301a) to rotate to a gap between the lower convex teeth (401a) to achieve unlocking.
5. The aircraft pylon fixed angle separation mechanism of claim 4, wherein: on the same circular arc, the arc length of the upper convex tooth (301a) is smaller than the arc length of a gap between two adjacent lower convex teeth (401 a).
6. The aircraft pylon fixed angle separation mechanism of claim 4, wherein: the outer edge of the upper convex tooth (301a) is matched with the inner wall of the lower connecting piece (6), and the outer edge of the lower convex tooth (401a) is matched with the outer wall of the upper connecting piece (5).
7. The aircraft pylon fixed angle separation mechanism of claim 4, wherein: the output of angle controller (302) is connected with the spline, the output of last clamping member (301) is equipped with spline groove (8).
8. The aircraft pylon fixed angle separation mechanism of claim 4, wherein: the upper locking part (301) is connected with the hanging rack (2) through a plane bearing (7).
9. The aircraft pylon fixed angle separation mechanism of claim 4, wherein: the angle controller (302) is a steering engine or a servo motor.
10. The aircraft pylon fixed angle separating mechanism of any one of claims 1 to 3, wherein: the bottom of the hanging rack (2) is attached to the top of the external hanging object (9).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586445.7A CN115077841A (en) | 2022-05-27 | 2022-05-27 | Fixed-angle separating mechanism for external stores of airplane |
| DE102023111007.1A DE102023111007A1 (en) | 2022-05-27 | 2023-04-28 | Device for removing an external aircraft bearing at a specific angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586445.7A CN115077841A (en) | 2022-05-27 | 2022-05-27 | Fixed-angle separating mechanism for external stores of airplane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115077841A true CN115077841A (en) | 2022-09-20 |
Family
ID=83248707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210586445.7A Pending CN115077841A (en) | 2022-05-27 | 2022-05-27 | Fixed-angle separating mechanism for external stores of airplane |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115077841A (en) |
| DE (1) | DE102023111007A1 (en) |
-
2022
- 2022-05-27 CN CN202210586445.7A patent/CN115077841A/en active Pending
-
2023
- 2023-04-28 DE DE102023111007.1A patent/DE102023111007A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023111007A1 (en) | 2023-11-30 |
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