CN211364912U - Open-close type fairing and aircraft - Google Patents
Open-close type fairing and aircraft Download PDFInfo
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- CN211364912U CN211364912U CN202020023229.8U CN202020023229U CN211364912U CN 211364912 U CN211364912 U CN 211364912U CN 202020023229 U CN202020023229 U CN 202020023229U CN 211364912 U CN211364912 U CN 211364912U
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Abstract
The application relates to the technical field of aircrafts, in particular to an open-close type fairing and an aircraft. An open-close fairing for an aircraft landing gear, the open-close fairing comprising a fairing body, a canopy assembly and a drive mechanism; the fairing body and the hatch cover assembly enclose an accommodating cavity so that the landing gear is positioned in the accommodating cavity; one side of the fairing body is used for being connected with the main body of the aircraft, the other side of the fairing body is connected with the hatch cover assembly, and the hatch cover assembly can move relative to the fairing body; the driving mechanism is used for driving the hatch cover assembly to move relative to the fairing main body so that the landing gear is covered in the accommodating cavity or exposed from the accommodating cavity. The application provides an open-close type radome fairing utilizes actuating mechanism drive cabin cover subassembly for the motion of radome fairing main part, when not influencing undercarriage descending function, greatly reduces the air resistance of undercarriage.
Description
Technical Field
The application relates to the technical field of aircrafts, in particular to an open-close type fairing and an aircraft.
Background
Landing gear is a device used for supporting an airplane and moving on the ground (water surface) when the airplane is in take-off and landing or in ground (water surface) taxiing. The wheeled landing gear of an airplane is divided into a retractable type and a non-retractable type. The retractable type has larger weight, and brings larger burden to light and small-sized aircrafts. The non-retractable landing gear has large flight resistance and is not beneficial to the performance of the airplane.
At present, part of airplanes adopt a fairing to wrap a non-retractable landing gear, but in order to realize that the wheel part of a landing function is exposed, the resistance is still larger.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an open-closed fairing and an aircraft for reducing air resistance for an aircraft landing gear.
An open-close fairing for an aircraft landing gear, the open-close fairing comprising a fairing body, a hatch assembly and a drive mechanism;
the fairing body and the hatch cover assembly enclose an accommodating cavity so that the landing gear is positioned in the accommodating cavity;
one side of the fairing body is connected to a body for the aircraft and the other side of the fairing body is connected to the hatch assembly, and the hatch assembly is movable relative to the fairing body;
the driving mechanism is used for driving the hatch cover assembly to move relative to the fairing main body so that the landing gear is covered in the accommodating cavity or exposed from the accommodating cavity.
In the above technical solution, further, the driving mechanism includes a driving device and a transmission assembly;
the fairing body is hinged with the hatch cover assembly;
the transmission assembly comprises a first transmission piece, a second transmission piece and a connecting shaft piece; the first transmission piece is connected with the fairing main body, and the second transmission piece can rotate and move along the extending track of the first transmission piece; the driving device is used for driving the second transmission piece to rotate; one end of the connecting shaft is rotatably connected with the second transmission piece, and the other end of the connecting shaft is used for driving the hatch cover assembly to overturn;
when the second transmission piece moves along the first transmission piece in a direction away from the fairing main body, the connecting shaft piece can drive the hatch cover assembly to rotate so as to enable the landing gear to be exposed from the accommodating cavity; when the second transmission piece moves towards the direction close to the fairing main body along the first transmission piece, the connecting shaft piece can drive the hatch cover assembly to rotate, so that the undercarriage is coated in the accommodating cavity.
In the above technical solution, further, the first transmission member is an arc-shaped rack, and a rotating shaft between the cowling main body and the hatch cover assembly passes through an imaginary circle center of the arc-shaped rack; the second transmission piece is a first gear, and the first gear is meshed with the arc-shaped rack;
the hatch cover assembly comprises a sleeving part and a turnover part which are connected, and the sleeving part is used for sleeving the rotating shaft; one end of the connecting shaft piece is rotationally connected with the first gear, and the other end of the connecting shaft piece is fixedly connected with the sleeving part;
when the first gear moves along the arc-shaped rack, the connecting shaft piece can rotate to drive the overturning part to swing.
In the above technical solution, further, the first transmission member is provided with a transmission gear, the second transmission member is a second gear, and the second gear is engaged with the transmission gear;
one end of the connecting shaft is rotationally connected with the second gear, and the other end of the connecting shaft is rotationally connected with the hatch cover assembly;
when the second gear moves along the transmission gear, the connecting shaft piece can push the hatch cover assembly to rotate by taking a rotating shaft between the fairing body and the hatch cover assembly as an axis.
In the above technical solution, further, the number of the first transmission members is at least one, and the second transmission members are arranged corresponding to the first transmission members;
when the number of the first transmission pieces is multiple, the first transmission pieces are arranged at intervals, and the second transmission pieces are arranged in a linkage manner.
In the above technical solution, further, the number of the driving device is at least one, the driving device is arranged between any two adjacent second transmission members, an output shaft of the driving device is connected with the second transmission members, and a main body of the driving device is connected with the connecting shaft member.
In the above technical solution, further, a magnetic member is disposed at an end of the first transmission member close to the cowling main body, the second transmission member has magnetism, and when the second transmission member is located at an end of the first transmission member close to the cowling main body, the second transmission member is magnetically connected to the magnetic member.
In the above technical solution, further, the magnetic member is an electromagnet and/or the second transmission member is an electromagnet.
In the above technical solution, further, the hatch cover assembly includes a first hatch cover and a second hatch cover which are symmetrically arranged;
the fairing body is hinged with the first hatch cover and the second hatch cover respectively;
the driving mechanism is arranged between the first hatch cover and the fairing main body, the driving mechanism is arranged between the second hatch cover and the fairing main body, and the driving mechanism is used for driving the first hatch cover and the second hatch cover to rotate towards opposite directions relative to the fairing main body so as to open or close the first hatch cover and the second hatch cover.
The application also provides an aircraft, which comprises the open-close type fairing.
Compared with the prior art, the beneficial effect of this application is:
the application provides an open-close type radome fairing utilizes actuating mechanism drive cabin cover subassembly for the motion of radome fairing main part, when not influencing undercarriage descending function, greatly reduces the air resistance of undercarriage.
The application also provides an aircraft comprising the open-closed fairing of the scheme. Based on the above analysis, the aircraft also has the above beneficial effects, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a first structural schematic diagram of an aircraft according to a first embodiment of the present disclosure;
FIG. 2 is a second schematic structural diagram of an aircraft according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of an open-closed cowl structure according to an embodiment of the present disclosure;
FIG. 4 is a first structural schematic diagram of a driving mechanism according to an embodiment of the present disclosure;
fig. 5 is a second structural schematic diagram of a driving mechanism according to an embodiment of the present application;
fig. 6 is a first structural schematic diagram of a driving mechanism according to a second embodiment of the present application;
fig. 7 is a second structural schematic diagram of the driving mechanism according to the second embodiment of the present application.
In the figure: 101-a fairing body; 102-a hatch assembly; 103-a drive mechanism; 104-the body of the aircraft; 105-a drive device; 106-a transmission assembly; 107-arc rack; 108-a first gear; 109-connecting shaft member; 110-a second gear; 111-a magnetic member; 112-a first hatch; 113-a second hatch; 114-landing gear.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example one
Referring to fig. 1-5, the present application provides an open-closed fairing for an aircraft landing gear 114, the open-closed fairing including a fairing body 101, a canopy assembly 102, and a drive mechanism 103; the fairing body 101 and the hatch assembly 102 enclose a receiving cavity such that the landing gear 114 is located in the receiving cavity; one side of the fairing body 101 is connected to the body 104 of the aircraft, the other side of the fairing body 101 is connected to the hatch assembly 102, and the hatch assembly 102 is able to move relative to the fairing body 101; the drive mechanism 103 is used to drive the hatch assembly 102 in a movement relative to the fairing body 101 so that the landing gear 114 is either encased within the containment cavity or exposed.
Specifically, the open-close type fairing is used for landing gear 114 of the aircraft, the accommodating cavity used for accommodating landing gear 114 is arranged in the fairing, the landing gear 114 is completely wrapped, and the fairing can be arranged in a streamline shape to reduce air resistance. The fairing, which is located at the landing gear 114, also acts as a ventral fin for the aircraft, providing greater stability to the aircraft. The openable cowl includes a cowl main body 101, a hatch cover assembly 102, and a drive mechanism 103, the cowl main body 101 and the hatch cover assembly 102 are movably connected, and the drive mechanism 103 can drive the hatch cover assembly 102 to move relative to the cowl main body 101. Specifically, during flight, the fairing body 101 and the hatch assembly 102 completely wrap the landing gear 114, and when the aircraft lands, the driving mechanism 103 drives the hatch assembly 102 to move relative to the fairing body 101, so that the landing gear 114 can be exposed, and the aircraft landing function is realized.
The opening and closing type fairing provided by the application utilizes the driving mechanism 103 to drive the hatch cover assembly 102 to move relative to the fairing main body 101, and greatly reduces the air resistance of the landing gear 114 while not influencing the landing function of the landing gear 114.
In an alternative to this embodiment, the driving mechanism 103 comprises a driving device 105 and a transmission assembly 106; cowl body 101 is hingedly coupled to a hatch assembly 102, i.e., hatch assembly 102 rotates to close and open with cowl body 101.
The transmission assembly 106 comprises a first transmission piece, a second transmission piece and a connecting shaft piece 109; the first transmission piece is connected with the fairing main body 101, and the second transmission piece can rotate and move along the extending track of the first transmission piece; the driving device 105 is used for driving the second transmission piece to rotate; one end of the connecting shaft 109 is rotatably connected to the second transmission member, and the other end of the connecting shaft 109 is used for driving the hatch cover assembly 102 to turn over. That is to say, the rotation motion of the second transmission member drives itself to move along the extending track of the first transmission member, and the driving device 105 provides the driving force for the rotation of the second transmission member. The second transmission member moves along the extending track of the first transmission member, and then drives the hatch cover assembly 102 to turn over through the connecting shaft member 109.
Specifically, the extending track of the first transmission member has two directions, the first direction is a direction away from the cowl body 101, and the second direction is a direction close to the cowl body 101; when the second transmission member moves in the first direction along the first transmission member, the connecting shaft 109 can rotate the hatch assembly 102 to expose the landing gear 114; when the second transmission member moves in the second direction along the first transmission member, the connecting shaft 109 can drive the hatch assembly 102 to rotate, so that the landing gear 114 is covered in the accommodating cavity. Referring to fig. 4 and 5, the a direction is a first direction and the B direction is a second direction.
Specifically, the first transmission member is an arc-shaped rack 107, and a rotating shaft between the fairing body 101 and the hatch cover assembly 102 passes through the circle center of the arc-shaped rack 107; the second transmission piece is a first gear 108, and the first gear 108 is meshed with the arc-shaped rack 107; the hatch cover assembly 102 comprises a sleeving part and a turnover part which are connected, and the sleeving part is used for sleeving the rotating shaft; one end of the connecting shaft 109 is rotatably connected with the first gear 108, and the other end of the connecting shaft 109 is fixedly connected with the sleeving part; when the first gear 108 moves along the arc-shaped rack 107, the connecting shaft 109 can rotate to drive the turning part to swing.
In this embodiment, the connecting shaft 109 is fixedly connected to the covering portion of the hatch cover assembly 102, and when the second transmission member drives the connecting shaft 109 to swing, the connecting shaft 109 can provide a torque to swing the turnover portion. At this time, the center of the arc-shaped rack 107, the rotation center of the coupling member 109, and the rotation center of the turning part are located on the rotation axis between the cowl body 101 and the hatch assembly 102. The above-described arrangement enables rotation of the hatch assembly 102 to expose or wrap the landing gear 114.
In an alternative scheme of the embodiment, the number of the first transmission pieces is at least one, and the second transmission pieces are arranged corresponding to the first transmission pieces; when the number of the first transmission pieces is multiple, the multiple first transmission pieces are arranged at intervals, and the multiple second transmission pieces are arranged in a linkage manner. Preferably, two first transmission members and two second transmission members rotating synchronously are provided, so that the rotating movement is more stable. The number of the first transmission piece and the second transmission piece is not limited to the number of the figures and can be selected according to actual conditions.
Alternatively, the number of the driving devices 105 is at least one, the driving device 105 is arranged between any two adjacent second transmission members, the output shaft of the driving device 105 is connected with the second transmission members, and the main body of the driving device 105 is connected with the connecting shaft member 109.
In this embodiment, when there are a plurality of second transmission members, the plurality of second transmission members are linked, the driving device 105 drives one of the second transmission members to rotate, and the remaining second transmission members can also rotate.
The driving device 105 may be a dual-output-shaft motor, and the driving device 105 is disposed between two adjacent second transmission members and can simultaneously drive the two second transmission members to rotate. Because the output shaft of the driving device 105 can rotate relative to the main body of the driving device 105, the main body is in a stationary state and is connected with the connecting shaft 109, and the output shaft of the driving device 105 rotates to drive the second transmission member to rotate, a pivot connection part is saved here, that is, the driving device 105 simultaneously realizes the driving function and the connecting function.
In an alternative scheme of this embodiment, a magnetic member 111 is disposed at an end of the first transmission member close to the cowl body 101, the second transmission member has magnetism, and when the second transmission member is located at an end of the first transmission member close to the cowl body 101, the second transmission member is magnetically connected to the magnetic member 111. When the second transmission member moves to the end of the first transmission member close to the cowling main body 101, the hatch cover assembly 102 is in a closed state, and the second transmission member is magnetically connected with the magnetic member 111, so that the hatch cover assembly 102 is closed more tightly. Optionally, the second transmission member may have a magnet mounted therein, or the second transmission member may be made of a magnetic material.
Preferably, the magnetic component 111 is an electromagnet and/or the second transmission element is an electromagnet, that is, the electromagnet can be energized in a flight state, so that the hatch cover assembly 102 is closed more tightly; upon landing, the electromagnet is de-energized, enabling the hatch assembly 102 to open quickly. Further, as shown, when the aircraft is powered off, the electromagnet loses its attraction, the driving device 105 fails, and the second transmission member can be rapidly rotated downward by the weight of the driving device 105, the second transmission member, or an additional weight, so that the hatch cover assembly 102 is rotated open. The safety hazard that the hatch cover of the landing gear 114 cannot be opened due to the failure of the driving device 105 when the airplane is powered off accidentally is avoided.
In an alternative to this embodiment, the hatch assembly 102 comprises a first hatch 112 and a second hatch 113 arranged symmetrically; the fairing body 101 is hinged with a first hatch 112 and a second hatch 113 respectively; a driving mechanism 103 is arranged between the first hatch 112 and the fairing body 101, a driving mechanism 103 is arranged between the second hatch 113 and the fairing body 101, and the driving mechanism 103 is used for driving the first hatch 112 and the second hatch 113 to rotate in opposite directions relative to the fairing body 101 so as to open or close the first hatch 112 and the second hatch 113. The fairing is opened and closed through the first hatch cover 112 and the second hatch cover 113 which are symmetrically arranged, and the whole structure is simpler and more effective.
Example two
Referring to fig. 6 and 7, the embodiment also provides a transmission assembly, the transmission assembly of the embodiment describes another implementation scheme of the first transmission piece and the second transmission piece, and the technical scheme of the first embodiment also belongs to the embodiment, and the description is not repeated.
In an alternative scheme of this embodiment, the first transmission member is provided with transmission teeth, the second transmission member is a second gear 110, and the second gear 110 is engaged with the transmission teeth; one end of the connecting shaft 109 is rotatably connected with the second gear 110, and the other end of the connecting shaft 109 is rotatably connected with the hatch cover assembly 102; when the second gear 110 moves along the gear teeth, the coupling member 109 can push the hatch assembly 102 to rotate about the rotation axis between the fairing body 101 and the hatch assembly 102.
In this embodiment, one end of the coupling 109 is rotatably connected to the second gear 110, and the other end of the coupling 109 provides a pushing force to push up the hatch assembly 102. The connection point of the coupling 109 to the hatch assembly 102 is not at the axis of rotation between the fairing body 101 and the hatch assembly 102, and during movement of the second gear 110 the angle between the coupling 109 and the hatch assembly 102 changes, so that the coupling 109 is rotationally connected to the hatch assembly 102. Referring to fig. 6 and 7, the C direction in the drawings is a first direction, and the B direction is a second direction. The first transmission member is not limited to the spur rack structure shown in the drawings, and may have other structures as long as the effect of pushing up the hatch cover assembly 102 is achieved.
EXAMPLE III
An embodiment of the present application provides an aircraft, including the open-close type fairing of any of the above-mentioned embodiments, therefore, have all beneficial technical effects of the open-close type fairing of any of the above-mentioned embodiments, here, no longer describe.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; 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 application. Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments.
Claims (10)
1. An open-close fairing for an aircraft landing gear, the open-close fairing comprising a fairing body, a canopy assembly and a drive mechanism;
the fairing body and the hatch cover assembly enclose an accommodating cavity so that the landing gear is positioned in the accommodating cavity;
one side of the fairing body is used for being connected with the main body of the aircraft, the other side of the fairing body is connected with the hatch cover assembly, and the hatch cover assembly can move relative to the fairing body;
the driving mechanism is used for driving the hatch cover assembly to move relative to the fairing main body so that the landing gear is covered in the accommodating cavity or exposed from the accommodating cavity.
2. The open-closed fairing according to claim 1, wherein said drive mechanism comprises a drive device and a transmission assembly;
the fairing body is hinged with the hatch cover assembly;
the transmission assembly comprises a first transmission piece, a second transmission piece and a connecting shaft piece; the first transmission piece is connected with the fairing main body, and the second transmission piece can rotate and move along the extending track of the first transmission piece; the driving device is used for driving the second transmission piece to rotate; one end of the connecting shaft is rotatably connected with the second transmission piece, and the other end of the connecting shaft is used for driving the hatch cover assembly to overturn;
when the second transmission piece moves along the first transmission piece in a direction away from the fairing main body, the connecting shaft piece can drive the hatch cover assembly to rotate so as to enable the landing gear to be exposed from the accommodating cavity; when the second transmission piece moves towards the direction close to the fairing main body along the first transmission piece, the connecting shaft piece can drive the hatch cover assembly to rotate, so that the undercarriage is coated in the accommodating cavity.
3. The open-closed fairing according to claim 2, wherein said first transmission member is an arcuate rack, and wherein a rotation axis between said fairing body and said deck lid assembly passes through an imaginary center of said arcuate rack; the second transmission piece is a first gear, and the first gear is meshed with the arc-shaped rack;
the hatch cover assembly comprises a sleeving part and a turnover part which are connected, and the sleeving part is used for sleeving the rotating shaft; one end of the connecting shaft piece is rotationally connected with the first gear, and the other end of the connecting shaft piece is fixedly connected with the sleeving part;
when the first gear moves along the arc-shaped rack, the connecting shaft piece can rotate to drive the overturning part to swing.
4. The openable cowl according to claim 2, wherein the first transmission member is provided with a transmission gear, and the second transmission member is a second gear engaged with the transmission gear;
one end of the connecting shaft is rotationally connected with the second gear, and the other end of the connecting shaft is rotationally connected with the hatch cover assembly;
when the second gear moves along the transmission gear, the connecting shaft piece can push the hatch cover assembly to rotate by taking a rotating shaft between the fairing body and the hatch cover assembly as an axis.
5. The openable cowl according to claim 2, wherein the number of the first transmission members is at least one, and the second transmission members are provided in correspondence with the first transmission members;
when the number of the first transmission pieces is multiple, the first transmission pieces are arranged at intervals, and the second transmission pieces are arranged in a linkage manner.
6. The openable cowling according to claim 5, wherein the number of the driving means is at least one, the driving means is provided between any adjacent two of the second transmission members, an output shaft of the driving means is connected to the second transmission members, and a main body of the driving means is connected to the shaft connecting member.
7. The open-closed fairing according to claim 2, wherein said first transmission member is provided with a magnetic element at an end thereof adjacent to said fairing body, and said second transmission member is magnetic, and wherein said second transmission member is magnetically coupled to said magnetic element when said second transmission member is positioned at an end thereof adjacent to said fairing body.
8. The openable cowl according to claim 7, wherein the magnetic member is an electromagnet and/or the second transmission member is an electromagnet.
9. The open-closed fairing according to claim 2, wherein said hatch assembly comprises a first hatch and a second hatch arranged symmetrically;
the fairing body is hinged with the first hatch cover and the second hatch cover respectively;
the driving mechanism is arranged between the first hatch cover and the fairing main body, the driving mechanism is arranged between the second hatch cover and the fairing main body, and the driving mechanism is used for driving the first hatch cover and the second hatch cover to rotate towards opposite directions relative to the fairing main body so as to open or close the first hatch cover and the second hatch cover.
10. An aircraft, characterized in that it comprises an open-closed fairing according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020023229.8U CN211364912U (en) | 2020-01-06 | 2020-01-06 | Open-close type fairing and aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020023229.8U CN211364912U (en) | 2020-01-06 | 2020-01-06 | Open-close type fairing and aircraft |
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| Publication Number | Publication Date |
|---|---|
| CN211364912U true CN211364912U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020023229.8U Active CN211364912U (en) | 2020-01-06 | 2020-01-06 | Open-close type fairing and aircraft |
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|---|---|
| CN (1) | CN211364912U (en) |
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