• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The object of the invention is a spatial wing made by means of a membrane forming a polygonal surface (1, 200, 300) provided with an inflatable structure (1, 2, 3, 201, 202, 301, 302). for which the inflatable structure comprises ribs extending on the membrane along diagonals of the membrane and passing through a central point of the membrane. Advantageously, the inflatable structure comprises at least one strip of film (2, 3, 201, 202, 301, 302) whose periphery is adhered to the membrane so as to form with the membrane an inflatable volume.
    公开号:FR3015436A1
    申请号:FR1363167
    申请日:2013-12-20
    公开日:2015-06-26
    发明作者:Guillaume Cecchini；Herve Guenat；Claude-Emile Mahy；Benjamin Rasse
    申请人:Astrium SAS；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to the field of ultra-light structures that can be embedded on satellites or space stations. More specifically, the present invention relates to a wing formed by a membrane which deploys by inflating ribs from a folded state. BACKGROUND OF THE INVENTION Inflation-deploying structures are known in the space field and for example US 5 311 706 A discloses various geometries of ultra-light spatial inflatable structures called gossamer structures. The document WO2006 / 024805 describes a multilayer wall for a structure of an inflatable gossamer device and the document WO2007 / 096289 describes an airbrake sail deploying with the aid of an inflatable mast. BRIEF DESCRIPTION OF THE INVENTION The present invention aims to achieve a compact wing when folded, which deploys easily and which is not likely to hang or get tangled during deployment. To this end, the present invention proposes a spatial wing made by means of a membrane forming a polygonal surface provided with an inflatable structure for which the inflatable structure comprises ribs extending over the membrane along diagonals of the membrane and passing through a central point of the membrane. Preferably, the inflatable structure comprises at least one strip of film whose periphery is adhered to the membrane so as to form with the membrane an inflatable volume. This inflatable volume will realize the extension ribs of the membrane. According to a first embodiment, the polygonal membrane is unfolded by means of an inflatable structure comprising at least two strips of film, a first strip being bonded to a first face of the membrane on a first diagonal of the membrane, said first strip and the membrane under this strip forming a first inflatable bead, and a second strip being bonded to a second face of the membrane opposite to said first face on one or more second diagonals of the membrane, the second strip and the membrane under this strip forming a second inflatable bead. Advantageously, the membrane is pierced in the center of the polygon for communicating the first and second inflatable tubes. According to a particular embodiment, at least one strip of film 15 comprises a cross cut bonded to one side of the membrane on diagonals of the membrane, said strip cross and the membrane under this strip forming an inflatable ring. According to a particular embodiment, the inflatable structure is made from a square membrane and comprises two strips of film, a first strip being bonded to a first face of the membrane on a first diagonal of the square surface, said first strip being strip and the membrane under this strip forming a first inflatable bead, and a second strip being adhered to a second face of the membrane opposite to said first face on the second diagonal of the square surface, the second strip and the membrane under this strip forming a second inflatable bead. According to a second embodiment, the inflatable structure with a square membrane is made with a strip of cross-film glued to one face of the membrane on the diagonals of the square surface, said strip cross and the membrane under this strip forming a flange inflatable. Advantageously, the inflatable structure comprises an inflation device in the center of the inflatable structure.
    [0002] More particularly, the inflation device comprises a valve and a tubular tip perpendicular to the membrane and which is fixed on a strip. The tubular end advantageously extends a telescopic mast for deploying the wing. The wing is for example a component of an antenna, a solar panel, an air-braking sail, a solar sail, a sun visor of a spacecraft. The invention further relates to a method of folding a spatial canopy 10 made by means of a membrane forming a polygonal surface integral with an inflatable structure for which the inflatable structure comprises a plurality of strips extending along the diagonals of the membrane, the method comprising a first succession of zigzag folds of the membrane parallel to a first diagonal of the membrane until a strip around said first diagonal and then a second succession of zigzag folds of the membrane perpendicular to said first diagonal until an apparent surface of the strips is visible on the membrane, said covering surface carrying an inflation tip of the device. According to a first embodiment, the first succession of folds being parallel to the first diagonal, begins with the zigzag folding of a first wing of the membrane of a first side of said first diagonal by folding folds said wing on a strip the width of the strip around said first diagonal and ends with the zigzag fold of the second wing on the other side of the first diagonal by means of 25 folds which fold the second wing over the first wing folded. According to a second embodiment, the first succession of bends is made parallel to the axis of the first diagonal and the wings are folded together in a zigzag. According to a third embodiment for which a step corresponds to the width of a strip disposed on the first diagonal, the first succession of folds comprises the folding of a first wing in zigzag folds parallel to the first diagonal on a strip of width 1/2 of a first side of the first diagonal, the first succession of folds comprising the folding of a second wing in zigzag folds on a strip of width 1/2 step of a second side of the first diagonal so that both wings are folded side by side. According to a first embodiment, the second succession of bends 5 is made perpendicularly to the first diagonal, arms of the band on either side of the second diagonal being folded together in a zigzag. The second succession of bends is according to a first variant made parallel to the second diagonal and comprises folding a first arm in zigzag folds and then folding a second arm in zigzag folds on the first arm. According to a second variant, the second succession of folds comprises a separate folding in parallel of arms on either side of the first diagonal in zigzag folds. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will become apparent on reading the following description of a nonlimiting exemplary embodiment of the invention with reference to the drawings which represent: in FIG. from above of a first embodiment of a wing of the invention; Figure 2 is a sectional side view of a central portion of the canopy of Figure 1; in Figure 3: a detail of an inflatable structure of the wing of the invention; in FIG. 4: a view from above of a second embodiment of a wing of the invention; 5A, 5B: a bottom view of two steps of a first embodiment of a first succession of bends of the canopy of the invention; in FIGS. 6A, 6B: side views of two alternatives of a second succession of folds of the wing of the invention; in FIG. 7: a view from below of a second embodiment of a first succession of folds of the wing of the invention; in FIG. 8: a side view of a third embodiment of a second succession of folds of the wing of the invention; in Figure 9: a perspective view of an example of a satellite equipped with a wing according to the invention folded; in Figure 10: a perspective view of the satellite of Figure 9 deployed wing; in FIG. 11: a view from above of an example of a polygonal sail; in Figure 12: a bottom view of the sail of Figure 11 on which are shown fold lines; in Figure 13: a top view of a rectangular sail on which are shown fold lines.
    [0003] DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION The present invention relates to membrane devices that inflate in space. These devices comprise a membrane which is folded before launching the satellite or spacecraft and which unfolds once the vehicle in space so as to obtain a large surface such as for example a plane satellite airborne sail, a solar sail or solar panel. The advantage of such devices is that no element outside the sail other than an inflation system is involved in the deployment of the sail.
    [0004] A particular objective of the invention is that the folded surface takes up the least possible space while guaranteeing a complete deployment with a high rate of successful deployment. A particular embodiment of the invention is a deorbitation sail for a square satellite and zigzag folded along its diagonals.
    [0005] The wing of the invention shown in FIG. 1 is a space wing made by means of a membrane 1 forming a square surface. The membrane may in particular be made with a polyimide film developed by the company DuPont and marketed under the Kapton brand of 7.5 μm in thickness, with an SiOx type atomic oxygen protection coating, with x ranging from 1 and 2. It is provided with an inflatable structure which extends along the diagonals of the membrane.
    [0006] The inflatable structure of FIG. 1 comprises two strips of film 2, 3 whose periphery 4 is adhered to the membrane so as to form with the membrane an inflatable volume represented in particular in FIG. 3. The strips will also be made with a polyimide film. known as Kapton.
    [0007] A first strip 2 is bonded to a first face of the membrane 1, for example the upper face according to the figure, on a first diagonal of the square surface, said first strip 2 and the membrane 1 under this strip forming a first inflatable ring. The bonding of the periphery 4 of the strip to the membrane is for example made with a CV 1142 type adhesive from the company Nusil. A second strip 3 shown in dotted lines is glued to the lower face of the membrane 1 opposite to said first face on the second diagonal of the square surface. The second strip 3 and the membrane 1 under this strip form a second inflatable bead. To ensure communication between the inflatable tubes and allow inflation at a single gas inlet point, the membrane 1 is pierced at the center of the square 5 to communicate the first and second inflatable tubes. FIG. 4 is an alternative embodiment for which the inflatable structure is made with a strip of cross film 2b glued to the diagonals of the square surface of the membrane 1. The cross strip 2b and the membrane 1 under this strip form a single inflatable pudding on one side of the membrane. According to FIG. 2, the inflatable structure has an inflation interface 7 at the center of the square surface. This interface can be in particular a valve. The inflation valve is here a valve that allows the gas to pass only in the direction of inflation of the inflatable structure. The valve 7 is disposed at the end of a nozzle 6 provided with a thread for receiving a nut 10 which fixes the valve 7 on the first strip 2 or in the case of the embodiment of FIG. 4 on the strip 2 '. To achieve a seal, seals 11, 12 support on both sides of the strip.
    [0008] In alternative embodiment, a bonding of a flange of the valve may be provided. As shown in FIG. 10, the tip may be arranged in extension of a telescopic mast to deploy the wing from a spacecraft 9. FIG. 9 shows the wing and the telescopic mast folded, the wing being maintained by rods 13 optionally provided with retaining lugs 14. Return to Figure 10, the lines or stays 15 may optionally connect the corners of the wing and the body of the spacecraft carrying the mast and the wing. The wing is for example a constituent of an antenna, a solar panel, a sail of aerobraking or a solar sail of a spacecraft. The folding of the spatial canopy comprises a first succession of folds in accordion or zigzag of the membrane and a second succession of 15 folding accordion of the membrane. The folding of the membrane is made so as to leave apparent a central square carrying the valve 7 and is therefore on the face opposite to the face carrying the valve 7. The folds are parallel to the diagonals of the square surface of the 20 membrane. The parts of the membrane on both sides of the first diagonal will be called wings. According to the example of FIGS. 5A and 5B, the first succession of folds Pal to Pa9 is parallel to a first diagonal 20. It starts with folds Pal to Pa5 made in a zigzag on a wing 1a of the membrane 1 of a first side of said first diagonal, this wing being folded over a strip the width of the strip 3 around said diagonal. Then folds Pa6 Pa9 of the second wing lb on the other side of the diagonal 20 are formed over the first folded wing. According to FIG. 6A a second succession of folds is carried out parallel to an axis 21 corresponding to the second diagonal and in the same way a first arm 101 is first folded in a zigzag manner according to folds PID1 to Pb4 and then a second arm 102 is it itself zigzag folded on the first, the valve 7 remaining clear because all the folds are on a lower face of the membrane. Furthermore, the first succession of folds comprises a first fold at the edge of the strip 3 of the inflatable structure, the subsequent folds of the first succession of folds leaving said strip visible. The second succession of folds comprises a first fold at the edge of a second strip of the inflatable structure, the subsequent folds leaving a central surface of the membrane visible, said central surface carrying an inflation tip of the device. According to FIG. 6B, the second succession of folds is always made parallel to the axis of the diagonal 21 but the arms 101, 102 are folded together in zigzag, first folds Pc1 and Pc2 being made with the arm 101 which is covered by the arm 102 at the fold Pc3, the arm 102 is then folded into Pc4 and in turn covered by the arm 101 folded Pc 5. This technique can also be used for the first succession of bends. According to FIG. 7 another method is used for the first succession of folds which is done on a width corresponding to half steps, one step being the width of the strip 2. The first succession of folds starts from a first fold Pd1 parallel to the diagonal along the axis 22 by which a triangular section 121 of the membrane is folded down on a second panel 122, the first fold being shifted by a first half step relative to the first diagonal and then comprises zigzag folds Pd2 at Pd6 on a strip 1/2 width of a first side of the diagonal 22. 25 It is likewise with the second triangular pan 122 zigzag folded according to the folds Pd7 to Pd12 so that the two sides are folded side by side. The same method is used for the second succession of bends, the arms 131 and 132 being folded in parallel zigzag according to the folds Pe1 to Pe10. Thus for the first succession of folds parallel to the first diagonal the parts or wings on each side of said diagonal can be folded one after the other in Z as in FIGS. 5A, 5B, one next to the other as in Figure 7 or together similarly to the folding mode of Figure 6B for the second succession of bends.
    [0009] The second succession of bends can be made in the manner of Figure 6A an arm 101 is folded Z and the second arm 102 is itself Z folded, Figure 6B, the arms 101, 102 are applied one on the other and folded together in Z or finally in the manner of Figure 8 where the two arms are each folded in parallel Z. The important thing is that the valve 7 is always on a clear surface above the folds and that the folds are perpendicular to the flanges whose inflation unfolds the blade. Zigzag or double Z folding makes it possible not to trap gas between the plies and allows the device to be evacuated without creating gas pockets. Once folded, the sail can be stored in a small space subject to vacuum. The deployment of the sail is obtained by simply inflating the space between the sail and the strips glued along the diagonals. The realization of the wing comprises the bonding of the circumference of the inflation strips to the same membrane forming the wing along the diagonals of the wing, this bonding membrane / strips forming the bladders allowing the deployment of the wing. In the case of the example of Figure 1, the gluing of the inflation strips is made on both sides of the sail in order to facilitate the manufacture and improve the tightness of the inflatable structure by achieving a bladder on the upper side and a bladder on the underside of the flat surface. Then the folding and combination of the double Z-folding along the diagonals is carried out and the diagonal blading of the bladders allows a two-stage deployment without blockage of the blade as the first bladder inflates and unfolds the first Z and then the second bladder inflates to unfold the second Z. In the first time the second bladder does not swell because of the geometry of the first Z which prevents the swelling of the second Z. An embodiment is an airborne deorbiting sail a Cubesat-type satellite, a small satellite built using elements of 10x10x10cm of sides commonly used by academics of all countries.
    [0010] The deorbiting sail is constituted by a square membrane of 5m x 5m, which will be stored in a cube of 10x10x10cm of the side The realization begins by the cutting of the square membrane of 5m x 5m then by the trace of the folds along the diagonals.
    [0011] Then, an adhesive tape patch is placed in the center of the sail and a hole about 8mm in diameter is drilled in the center of the patch. The embodiment continues by cutting a strip 3 of 1.2m long and the bonding of this strip on a diagonal on a lower face of the membrane.
    [0012] Then we cut a second strip 2, identical to the first, a hole of about 8 mm is drilled in the middle of this strip to position an inflation valve 7 at this hole in the second strip, the second strip is then glued to the upper side of the membrane 1 along the diagonal left free.
    [0013] Once the sail is completed, it is proceeded to folding in double Z following the pattern of folds parallel to the diagonals of the sail and then fixing the tip 6 of the valve 7 at the end of the telescopic arm 8 rigid. The sail is thus fixed at the end of a single rigid mast which is an advantage of the invention.
    [0014] The invention more generally applies to a polygonal membrane provided with inflatable tubes for which two folding directions will be defined according to the position of the flanges. The type of usable polygon is a convex polygon for which the strips extend on diagonals passing through the center of the polygon or by a single point of intersection. The inflatable tubes extend towards the vertices of the polygon formed by the membrane to unfold it gradually. FIG. 11 corresponds to an example of a hexagonal membrane 200 comprising a first coil 201 on a first face of the membrane and connecting two opposite vertices of the hexagon with respect to the center of the membrane and a second coil 202 in a cross on a second face of the membrane and joining the four other vertices of the hexagon.
    [0015] In this case the folding is represented in FIG. 12 and first folds 203 represented by lines parallel to the first bead 201 make it possible to fill the sides on either side of the first bead along an axis intermediate between the axes of the cross bolsters then second plies 204 perpendicular to the direction of the first flange can fold the sail in the axis of the first flange. The unfolding will be preferentially according to the folds made last according to the coil the least constrained by folding. Figure 13 corresponds to a rectangular sail 300 provided with two inflatable tubes 301 and 302 along two diagonals. For this embodiment, the first plies 303 perpendicular to the first flange 301 give a first direction of folding and the second plies parallel to the first flange 301 give a second direction of folding. In this embodiment, the second plies are not oriented at 90 ° of the second flange which will unfold less evenly than for a square sail for example. The invention can also be applied to solar sails, flexible solar panels, sunscreens or other planar devices deployed in space.
    [0016] During the flight, the sail is kept taut, for example by maintaining a slight pressure in the flanges. For longer use, one can use known stiffening techniques without pressure maintenance, such as that of using membranes provided with an aluminum film. 25
    权利要求:
    Claims (19)
    [0001]
    CLAIMS1 - Spatial wing made by means of a membrane forming a polygonal surface (1, 200, 300) provided with an inflatable structure (1, 2, 3, 201, 202, 301, 302) for which the inflatable structure comprises ribs extending over the membrane along diagonals of the membrane and passing through a central point of the membrane.
    [0002]
    2 - spatial wing according to claim 1 wherein the inflatable structure comprises at least one strip of film (2, 3, 201, 202, 301, 302) whose periphery is bonded to the membrane so as to form with the membrane a volume inflatable.
    [0003]
    3 - Spatial wing according to claim 1 or 2 for which the polygonal membrane is unfolded by means of an inflatable structure comprising at least two strips of film, a first strip 2, 201, 301) being bonded to a first face of the membrane on a first diagonal of the membrane, said first strip and the membrane under this strip forming a first inflatable bead, and a second strip (3, 202, 302) being adhered to a second face of the membrane opposite said first face on a or several diagonal seconds of the membrane, the second strip and the membrane under this strip forming a second inflatable bead.
    [0004]
    4 - Spatial wing according to claim 1, 2 or 3 for which the membrane is pierced in the center of the polygon for communicating the first and second inflatable tubes.
    [0005]
    5 - Spatial wing according to any one of the preceding claims wherein at least one strip (3, 202) of film comprises a cross-cut bonded on one side of the membrane on the diagonals of the membrane, said strip cross and the membrane under this strip forming an inflatable ring.
    [0006]
    6 - Spatial wing according to claim 1 wherein the inflatable structure is made from a square membrane and comprises two strips of film (2, 3), a first strip (2) being bonded to a first face of the membrane on a first diagonal of the square surface, said first strip (2) and the membrane (1) under this strip forming a first inflatable bead, and a second strip (3) being adhered to a second face of the membrane opposite said first face on the second diagonal of the square surface, the second strip (3) and the membrane (1) under this strip forming a second inflatable bead.
    [0007]
    7 - Spatial wing according to claim 6 wherein the membrane (1) is pierced in the center of the square (5) for communicating the first and second inflatable tubes.
    [0008]
    8 - Spatial wing according to claim 1 wherein the inflatable structure is made from a square surface membrane and a strip of cross film (2b) glued on one side of the membrane on the diagonals of the square surface, said cross strip (2b) and the membrane (1) under this strip forming an inflatable ring.
    [0009]
    9 - Spatial wing according to any one of the preceding claims wherein the inflatable structure comprises an inflator (7) in the center of the inflatable structure.
    [0010]
    10 - Spatial wing according to claim 9 wherein the inflator (7) comprises a valve and a tubular nozzle (6) perpendicular to the membrane and which is fixed on a strip (2).
    [0011]
    11 - Spatial wing according to claim 10 for which the tubular endpiece (6) extends a telescopic mast (8) of deployment of the wing.
    [0012]
    12 - Spatial wing according to any one of the preceding claims wherein the wing is a constituent of an antenna, a solar panel, a sail of airbrake or a sail of a spacecraft (9 ).
    [0013]
    13 - Method of folding a spatial canopy according to any one of the preceding claims characterized in that it comprises a first succession of zigzag folds of the membrane parallel to a first diagonal (20) of the membrane until a band around said first diagonal and then a second succession of zigzag folds of the membrane perpendicular to said first diagonal until an apparent surface of the strips (2, 3, 201, 202, 301, 302) on the membrane said covering surface carrying an inflation tip (6) of the device.
    [0014]
    14 - A method of folding a spatial canopy according to claim 13 wherein the first succession of folds (Pal, ..., Pa9) is parallel to the first diagonal, begins with the zigzag fold of a first wing ( 1a) of the membrane (1) of a first side of said first diagonal by means of bends (Pal, ..., Pa5) which fold said wing on a strip the width of the strip (3) around said first diagonally and ends with the zigzag fold of the second wing (1b) on the other side of the first diagonal (20) by means of bends (Pa6, ..., Pa9) which fold the second wing over the first wing folded.
    [0015]
    15 - A process for folding a spatial canopy according to claim 13 wherein the first succession of bends is made parallel to the axis of the first diagonal (20) and the wings (1a, 1b) are folded together in a zigzag.
    [0016]
    16 - Method of folding a spatial canopy according to claim 13 wherein, a step corresponding to the width of a strip (2) disposed on the first diagonal (22), the first succession of folds comprises the folding of a first wing (121) in zigzag folds (Pd1, ..., Pd6) parallel to the first diagonal (22) on a strip of width 1/2 of a first side of the first diagonal, the first succession of folds comprising the folding of a second wing (122) in zigzag folds (Pd7, ..., Pd12) on a strip of width 1/2 of a second side of the first diagonal (22) so that both wings are folded side by side.
    [0017]
    17 - Process for folding a spatial canopy according to any one of claims 13 to 16 for which the second succession of bends is made perpendicularly to the first diagonal (22), arms (101, 102) of the strip of share and else of the second diagonal being folded together in zigzag (Pc1, ..., Pc5).
    [0018]
    18 - A method of folding a spatial canopy according to any one of claims 13 to 16 for which the second succession of bending is carried out parallel to the second diagonal (21) and comprises folding a first arm (101) according to folds zigzag (Pb1, ..., Pb4) and then folding a second arm (102) in zigzag folds (Pb5, ..., Pb7) on the first arm.
    [0019]
    19 - A method of folding a spatial canopy according to any one of claims 13 to 16 for which the second succession of folds comprises a separate parallel fold arm (131, 132) on either side of the first diagonal according to zigzag folds (Pe1, ..., Pe10).
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    同族专利:
    公开号 | 公开日
    FR3015436B1|2017-12-15|
    EP3083407B1|2018-06-13|
    JP2017501077A|2017-01-12|
    CA2933347C|2021-11-02|
    CA2933347A1|2015-06-25|
    EP3083407A1|2016-10-26|
    RU2016129580A|2018-01-25|
    US20160304220A1|2016-10-20|
    WO2015091858A1|2015-06-25|
    JP6571086B2|2019-09-04|
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    DE102018117993B4|2018-07-25|2020-06-18|Deutsches Zentrum für Luft- und Raumfahrt e.V.|Spacecraft membrane unit and spacecraft membrane package with a spacecraft membrane unit|
    CN112224448A|2020-09-14|2021-01-15|北京空间机电研究所|Deployable conical thin film structure for spacecraft cleaning|
    CN112591145A|2021-01-14|2021-04-02|哈尔滨工业大学|Flexible film inflatable cylinder with reinforcing sheath and rectangular parallelepiped containing and folding method thereof|
    法律状态:
    2015-12-23| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-29| PLFP| Fee payment|Year of fee payment: 5 |
    2018-05-11| CD| Change of name or company name|Owner name: AIRBUS DEFENCE AND SPACE SAS, FR Effective date: 20180406 |
    2018-05-25| CD| Change of name or company name|Owner name: ARIANEGROUP SAS, FR Effective date: 20180419 |
    2018-05-25| TP| Transmission of property|Owner name: ARIANEGROUP SAS, FR Effective date: 20180419 |
    2018-05-25| CA| Change of address|Effective date: 20180419 |
    2019-12-19| PLFP| Fee payment|Year of fee payment: 7 |
    2020-12-23| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-24| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1363167A|FR3015436B1|2013-12-20|2013-12-20|INFLATABLE FLYING VEIL|FR1363167A| FR3015436B1|2013-12-20|2013-12-20|INFLATABLE FLYING VEIL|
    JP2016539304A| JP6571086B2|2013-12-20|2014-12-18|Expandable inflatable wing|
    PCT/EP2014/078562| WO2015091858A1|2013-12-20|2014-12-18|Deployable inflatable wing|
    US15/103,121| US10427805B2|2013-12-20|2014-12-18|Deployable inflatable wing|
    RU2016129580A| RU2016129580A|2013-12-20|2014-12-18|DEPLOYABLE INFLAMMABLE CARRIER SURFACE|
    CA2933347A| CA2933347C|2013-12-20|2014-12-18|Deployable inflatable wing|
    EP14814891.9A| EP3083407B1|2013-12-20|2014-12-18|Deployable inflatable wing|
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