• 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 invention relates to a device (1) for simulating deposits, in particular ice deposits, on a surface, for example an aircraft (11) or aircraft part, which has a contoured outer surface (7) for simulating the deposit, or a method for producing a device (1) for simulating ice deposits on a surface. The task of further simplifying and accelerating the manufacture of the device and attachment to the flying object, as well as facilitating the transport, is achieved according to the invention in that the device (1) is made of flexible material or, on the basis of a 3D Model on a flexible base layer (2) a contour layer (3) applied, preferably printed.
    公开号:AT519954A4
    申请号:T50802/2017
    申请日:2017-09-21
    公开日:2018-12-15
    发明作者:
    申请人:Manuel Gerstenbrand；
    IPC主号:
    专利说明:

    The invention relates to a device for simulating deposits, in particular ice deposits, on a surface, for example of an aircraft or aircraft part, which has a contoured outer surface for simulating the deposition.
    Such devices are used, for example, to simulate ice deposits. But you can also simulate any other surface change due to various attachment processes on surfaces, for example
    Dirt. Also, ice deposits of various types can be simulated, in addition to fully formed, thick layers of ice, for example, so-called "residual ice shapes" can be imitated, that is weak ice deposits, which remain after a deicing cycle.
    Such devices are used, for example, on the one hand to simulate icing on surfaces in a wind tunnel, on the other hand, but also icing conditions on aircraft on test flights. Of course, this also applies to other aircraft such as drones or helicopters. For the sake of simplicity, only airplanes will be discussed below, but in this context any type of flying object is to be understood. However, the application is also possible in other areas, for example on parts of wind turbines or vehicles.
    In the following, the outer surface means the surface which does not have a direct
    Contact with the object surface has, ie the new outer contour of the object. The
    The inner surface, on the other hand, is the one that is in direct contact with the surface of the object.
    Such devices are described in US 9,696,238 B2. These are attachment parts, which are formed on the inside fit for a specific part of the surface of an aircraft to be tested, and on the outside have a contour simulating the ice layer. In this case, each attachment must be mounted on the intended place for him on the surface, usually the front of the wing, and the attachment parts are lined up one after the other. This is disadvantageous because each attachment can be used only at exactly one position and only for a particular flying object. This requires a high
    Level of manufacturing accuracy. In addition, the exact attachment is very important and therefore very time consuming and prone to errors, as must be followed by several parts, the order of the attachment parts. At the same time is the
    Transport difficult because the attachment parts are usually very bulky and hardly stackable. Also, the production of the individual parts is difficult, since each part must be made only once, but both the inside of a precisely fitting contour, and the outside must have a contour simulating the ice layer. Due to manufacturing tolerances, the actual surface may deviate from the ideal model, making application difficult. Another one
    Problem is that the production of the transition areas between the
    Outer surface of the attachment and the surface of the basic object in which
    Edges due to the negative aerodynamic properties should be avoided is very difficult.
    Object of the present invention is now to avoid the disadvantages described and a device, or a method for producing the
    Device in which the manufacture of the device and a
    Attaching to the flying object further simplified and accelerated, as well as the
    Transport is facilitated.
    This object is achieved according to the invention in that the device is made of flexible material. It is also solved in that on the basis of a 3D model on a flexible base layer, a contour layer is applied, preferably printed by means of 3D printing.
    By producing the device from a flexible, flexible material, on the one hand the application to the surface is facilitated because it conforms better to the contour of the surface. As a result, it can also be used on surfaces which have a slightly different contour. This is particularly useful when flying objects or components of the same type are to be tested, but they have slightly different contours due to structural size variations or thermal expansions. But they can also be used on different types of construction, if the contour is not significantly different. As a result, the attachment to the surface is also further accelerated.
    By flexible in this sense, on the one hand, a flexibility is meant, which makes it possible for the device to adapt well to a surface with a certain contour. At the same time, however, the device should in most cases be rigid enough that the contoured outer surface does not deform by the air currents in the wind tunnel or the test flight over a tolerable level. Depending on the thickness and shape of the contour of the outer surface, the degree of flexibility can be chosen differently. It is also possible that the flexibility is chosen differently on certain parts or specific layers of the device.
    It is particularly advantageous if the device is a film. The design as a film, in particular, the transport is further simplified, since the film can be rolled up and thus easily transportable. Also, the attachment is simplified by being applied in one place and is rolled continuously during the course of attachment. Also one-piece designs are thus easier and more portable. Alternatively, the film can simply folded flat, or several pieces of film are stacked flat.
    At the same time, production is simplified because the film can be produced more easily when flat. Thanks to its flexibility, it nevertheless adapts to the contour of the surface.
    Such embodiments, which are made in one piece, have the enormous
    Advantage that a possible interchanging of the individual parts can not occur, and the attachment to the surface is very fast and easy. It can be attached to the aircraft or aircraft part on different surfaces
    Devices of different types are attached. However, swapping is hardly possible due to the strong differences in shape. At the same time, too
    Occurrence of joints between the parts prevented. Instead, a continuous, contoured surface is provided, which is aerodynamically favorable.
    There are also embodiments possible, which are composed of several parts that are directly to each other reihbar. The flexible design allows in such an embodiment, the use of the individual parts not only at the directly intended place, but also in places with a slightly different contour. Furthermore, it may also be easier or more necessary for the production to choose multipart designs.
    It is particularly advantageous if the film has a base layer and at least one contour layer applied thereto. As a result, on the one hand, by choosing the materials, a flexible film can be produced, which has a flexible base layer which can be applied well, but at the same time has a somewhat more rigid contour layer, which is resistant to external forces such as, for example, air currents. At the same time, production is simplified because it can be split into two. As a base layer, a thermoplastic could be used. It should preferably be as thin as possible, but stable enough to bond well with the contour layer. Due to the thin design, the transition between film and surface is as even and small as possible, whereby the air flow is disturbed as little as possible. The contour layer does not have to continuously cover the base layer. In a simulation of only partial surface changes, such as icing, a base layer may be partially free of the contour layer, whereby a point is simulated without change. Due to the thin design, the thickness of the base layer is negligible at these points.
    If the contour layer is formed from at least two materials, this is particularly advantageous. This can, on the one hand, increase the mechanical
    Contribute resilience. For example, the contour layer at a particularly high or aerodynamically particularly exposed point, a material increased
    Rigidity are used. If the contour layer is applied in several sub-layers, it may also be useful to apply the individual sub-layers with different materials. On the other hand, this can be a
    Increasing the weight of the film can be effected. This is particularly advantageous when the other materials used have a lower or higher density than the ice that forms on the surface in icing conditions. To compensate for this difference, for example, a flexible, too light - or too heavy - main material for the contour layer can be used, and at the same time a heavier - or lighter - side material are added, which compensates for the weight difference.
    To further simplify the production, it may be advantageous if the
    Contour layer is printed on the base layer, preferably by means of additive
    Manufacturing processes. For example, 3D printing processes such as 3D
    Printers or 3D hybrid printers. The production can be further simplified by the use of a flexible base layer. This serves as a carrier material and must be able to bond materially to the 3D printing material. Any contour can be printed on it as well as leaving areas of the base layer free.
    In addition to the choice of material can be when using additive
    Manufacturing processes such as 3D printing, the degree of filling of the contour layer are affected. This can be used in combination with the choice of material to specifically simulate physical properties such as weight or flexibility or even the center of gravity.
    For example, the base layer can be unrolled from a roll, the contour layer can be printed by a 3D printer, and rolled up again after printing. Thus, the film can be printed continuously piece by piece and produce a very long film.
    Alternatively, it can also be provided that the contour is made of a flexible base body by means of machining processes. For example, the contour layer can be milled out of a base body.
    In a further advantageous embodiment, the contour layer or the entire device is produced by means of a casting method or injection method. In embodiments which include a base layer and a
    Contour layer, the contour layer can be made by casting or injection. For those who do not have a base coat, the entire
    Device can be created by such a production. It always will
    Used negative forms, which determine the exact shape and contour of the device, or contour layer. It can also be the negative shape of the contour to be generated are made of a rigid material and then poured with a flexible material.
    It is particularly advantageous if the contoured outer surface is based on a 3D
    Model is shaped. This 3D model can be either artificially modeled, or created on the basis of a 3D-scanned, for example real iced surface in a glacial wind tunnel.
    Is the 3D model used for manufacturing based on a 3D scan of a
    Surface is created with deposits, so can be as natural as possible
    Replica of the deposit, such as icing be created.
    Alternatively, it may be advantageous if the 3D model used for the production is created on the basis of a computer-aided simulation model. For example, a simulation of the icing on the computer can be carried out, which should then be examined more closely in the wind tunnel or in flight tests.
    In order to increase the mechanical load capacity of the contour layer, can at the
    Outer surface may be arranged a flexible cover layer, or may at the
    Outer surface of the device, a cover layer are applied. This protects the contour layer from abrasion and is preferably also made of flexible material. This may have a certain roughness, so as to replicate the properties of the ice layer as natural as possible. Should be particularly smooth
    Surfaces needed, this topcoat can also reduce the
    Roughness can be used.
    In order for the application of the device to the surface to be as light as possible, an adhesive layer can be applied to its inside. It can the
    Adhesive layer can be applied directly to the surface before application, or in an earlier step. Preferably, the adhesive layer is formed so that the device can be removed quickly and without leaving any residue after use again. The adhesive layer should also be able to be removed as well as possible from the surface of the basic object but still be able to withstand the shear stresses that occur.
    If, at least partially, a transition region is arranged at the edges, which preferably has a decreasing thickness towards the edges, the negative aerodynamic effects possibly occurring there due to the edge can be reduced or avoided. In this case, for example, the transition region can be formed only by the base layer and optionally the cover layer, which are pressed if necessary to achieve a further reduction in thickness. The same can be achieved if these areas are thermally treated. By such
    Treatments may have a near-zero thickness at the edge of the
    Device can be achieved.
    It is particularly advantageous if the base layer is continuously rolled up or down by rollers during the printing process and the contour layer is thereby applied. This allows a particularly simple production, since the
    Contour layer sections and layers can be applied, and after completion of a section, the film can be easily moved.
    It may also be advantageous to first apply a partial layer of the contour layer on the entire film, in order to then in a further rolling or
    Roll up the next layer to apply and repeat this until all
    Layers are applied. As a result, particularly long devices, such as those required for wing leading edges in the course of real flight tests, can be produced. As a result, any aerodynamically adverse shocks can be avoided, which by the juxtaposition of several individual
    Devices would arise.
    It may also be advantageous for the device to be pushed through the device stepwise or continuously during the printing process, with the contour layer being applied in the process. This is particularly useful if a roll is not desired, but nevertheless devices of great length to be produced. As a result, a relatively small-sized printer can be used for a very long film.
    If, during the application, the base layer is at least partially held or stretched, and on the held or tensioned area
    Contour layer is applied, so it can be done easily on the application. In particular, the printing by a 3D printer is thus easily possible. The clamping can be done by a suitable clamping device or, for example, a vacuum system.
    In order to find the most accurate position on the surface, it is advantageous if markings are printed directly, preferably also made of a flexible material. As a result, it can be recognized immediately when applying, at which point and in which orientation the device should be attached.
    The markings may also be suitable for defining the sequence of parts in embodiments composed of several parts.
    The geometric shape of the device can be created digitally in a variety of ways. For example, 3D scanning systems can be used.
    If necessary, it may be necessary to coat the part to be measured before it is scanned. In this case, for example, a scan structure of several
    Single-scan systems are used to cover the largest possible area with sufficient accuracy. Basically, any 3D
    Scan technology, such as stereoscopy,
    Laser scanner or structured light based method. Will the
    Scanning in a cold environment such as a chilled
    Wind tunnel or icing wind tunnel performed, it may be advantageous in particular to heat the electronic components to thermal
    To prevent expansion. As a result, the highest possible accuracy can be achieved.
    Since the geometry change of an object is to be mapped, is for the
    Making the device to form the difference of the final geometry to the original geometry. For this purpose, for example, the surface can first be scanned 3D before being exposed to deposits and after the deposits have been applied, these scans optionally processed and subtracted from one another, and a 3D model thus obtained. As a result, for example, the exact ice structure is measured after an icing process on the surface, and it can be made a film that simulates the iced geometry as true to nature as possible. During this process, alignment algorithms can be used to position the records relative to each other. Alternatively, existing digital data of the original surface may also be used, such as CAD data. However, it may happen that due to manufacturing tolerances, the real geometry deviates from the ideal, digital geometry. Especially here is the use of 3D scanning technologies.
    It is also advantageous if the 3D model is handled flat and thus the 3D
    Geometry of the contour can be transferred to a flat layer.
    The desired roughness of the surface can be achieved by applying the
    Contour layer, or be achieved by appropriate design of the contour layer. For example, this can be done by varying the pressure parameters.
    Alternatively, it may be advantageous if an adhesive layer, such as a resin, for example, is applied to the contour layer or, if appropriate, top layer, and then with particles of a specific size or specific
    Size distribution is sprinkled. Thereby, a certain surface roughness can be easily adjusted. This adhesive layer does not have to be applied to the entire contour layer or cover layer. It can also be sprinkled at different points particles of different particle size. The particle size required to simulate a certain roughness can be determined, for example, by suitable algorithms or from experiences or
    Approval requirements are taken.
    Furthermore, it is advantageous if a correction algorithm by the
    Device on the surface compensates for distortion of the contour.
    As a result, changes in the contour contour simulating the contour of the ice can be reduced or completely prevented when applying to non-flat surfaces. Such algorithms compute the resulting distortion based on the shape of the surface to which the film is applied and compensate it by propagation, reduction, shape change, or the like of the sub-layers of the contour layer.
    A method for testing aircraft or aircraft parts, wherein a device for simulating ice deposits on a surface of the aircraft or aircraft part is attached, the test is performed and then the
    Device is removed again, are already known. However, such
    Process greatly facilitated and accelerated when a device made of flexible material is used. Furthermore, the test quality by the
    Use of real icing data, which are recorded for example by 3D scanning systems, significantly increased.
    As a result, the present invention will be explained in more detail with reference to an embodiment variant shown in the figures. Show it:
    Figure 1 shows an embodiment of a device according to the invention, attached to the wing of an aircraft in a schematic oblique view;
    Figure 2 shows the embodiment in a schematic section.
    In Fig. 1 is an integral embodiment of an inventive
    Device 1, which is attached to the wing 11 of an aircraft 10. It extends over the entire length of the wing 11, and thus covers the entire front of the wing 11. A device 1 more similar
    Embodiment could equally well on the other, not pictured wing of the
    Aircraft 10 or on the likewise not shown front sides of the tailplane or the vertical stabilizer, as well as on the fuselage or any other location of the aircraft 2 be applied.
    Fig. 2 shows the embodiment in detail in a section, it being now visible that the device 1 also covers in section the entire front side of the wing 11. A base layer 2 is adhered to the surface 12 of the wing. On this base layer 2, a contour layer 3 is printed, which simulates Eisablagerungen. Therefore, it is irregular, has higher and shallower peaks and is partially interrupted. On the contour layer 3, a cover layer 4 is applied, which increases the mechanical strength of the contour layer 3. The contour of the outer surface 7 is essentially determined by the contour layer 3, but partly also by the cover layer 4. At the interrupted point, the cover layer 4 is interrupted, but it can be provided that it is applied at this point nationwide on the base layer 2. On the edges of the
    Device 1 transition areas 5 are arranged, which allows a possible edgeless transition to the surface of the wing 11. The contour layer 3 ends at the beginning of the transition regions 5 and also the cover layer 4 runs out shortly thereafter. Thus, the transition areas 5 are essentially by the
    Base layer 2 formed. In the last area of the transition areas 5 are
    Outlet areas 6 are provided, in which the base layer 2 below
    Temperature influence was pressed, so that their thickness decreases continuously.
    This allows a particularly edge-free transition. The illustrated
    Embodiment covers only the front of the wing 11. Other
    However, embodiments can also be designed to cover larger areas of the wing or even the entire wing.
    权利要求:
    Claims (26)
    [1]
    1. A device (1) for simulating deposits, in particular ice deposits, on a surface, for example of an aircraft (11) or aircraft part, which has a contoured outer surface (7) for simulating the deposit, characterized in that the device (1) made of flexible material.
    1. A device (1) for simulating deposits, in particular ice deposits, on a surface, for example of an aircraft (11) or aircraft part, which has a contoured outer surface (7) for simulating the deposit, characterized in that the device (1) made of flexible material.
    [2]
    2. A device (1) according to claim 1, characterized in that the device (1) is a film.
    2. A device (1) according to claim 1, characterized in that the device (1) is a film.
    [3]
    3. A device (1) according to claim 1 or 2, characterized in that it is composed of several parts which are directly to one another reihbar.
    3. A device (1) according to claim 1 or 2, characterized in that it is composed of several parts which are directly to one another reihbar.
    [4]
    4. A device (1) according to any one of claims 1 or 2, characterized in that it is made in one piece.
    4. A device (1) according to any one of claims 1 or 2, characterized in that it is made in one piece.
    [5]
    5. A device (1) according to any one of claims 2 to 4, characterized in that the film has a base layer (2) and at least one contour layer applied thereto (3).
    5. A device (1) according to any one of claims 2 to 4, characterized in that the film has a base layer (2) and at least one contour layer applied thereto (3).
    [6]
    6. A device (1) according to claim 5, characterized in that the contour layer (3) is formed from at least two materials.
    6. A device (1) according to claim 5, characterized in that the contour layer (3) is formed from at least two materials.
    [7]
    7. A device (1) according to claim 5 or 6, characterized in that the contour layer (3) is printed on the base layer (2), preferably by means of additive manufacturing processes.
    7. A device (1) according to claim 5 or 6, characterized in that the contour layer (3) is printed on the base layer (2), preferably by means of additive manufacturing processes.
    [8]
    8. A device (1) according to claim 5 or 6, characterized in that the contour is made of a flexible base body by means of machining processes.
    8. A device (1) according to claim 5 or 6, characterized in that the contour is made of a flexible base body by means of machining processes.
    [9]
    9. A device (1) according to any one of claims 1 to 6, characterized in that the contour layer (3) or the entire device (1) is produced by means of a casting method or injection method.
    9. A device (1) according to any one of claims 1 to 6, characterized in that the contour layer (3) or the entire device (1) is produced by means of a casting method or injection method.
    [10]
    10. A device (1) according to any one of claims 1 to 9, characterized in that the contoured outer surface (7) is formed on the basis of a 3D model.
    10. A device (1) according to any one of claims 1 to 9, characterized in that the contoured outer surface (7) is formed on the basis of a 3D model.
    [11]
    11. A device (1) according to any one of claims 1 to 10, characterized in that on the outer surface (7) a flexible cover layer (4) is arranged.
    11. A device (1) according to any one of claims 1 to 10, characterized in that on the outer surface (7) a flexible cover layer (4) is arranged.
    [12]
    12. A device (1) according to any one of claims 1 to 11, characterized in that on its inside an adhesive layer is arranged.
    12. A device (1) according to any one of claims 1 to 11, characterized in that on its inside an adhesive layer is arranged.
    [13]
    13. A device (1) according to any one of claims 1 to 12, characterized in that at the edges at least partially a transition region (5) is arranged, which preferably has a decreasing thickness towards the edges.
    13. A device (1) according to any one of claims 1 to 12, characterized in that at the edges at least partially a transition region (5) is arranged, which preferably has a decreasing thickness towards the edges.
    [14]
    14. A method for producing a device (1) for simulating deposits on a surface according to one of claims 1 to 13, characterized in that on the basis of a 3D model on a flexible base layer (2) a contour layer (3) applied, preferably printed by 3D printing.
    14. A method for producing a device (1) for simulating deposits on a surface, characterized in that on the basis of a 3D model on a flexible base layer (2) applied a contour layer (3), preferably printed by means of 3D printing.
    [15]
    15. The method according to claim 14, characterized in that the device (1) continuously during the printing process of roles on or. is unrolled while the contour layer (3) is applied.
    15. The method according to claim 14, characterized in that the device (1) continuously during the printing process of roles on or. is unrolled while the contour layer (3) is applied.
    [16]
    16. The method according to claim 15, characterized in that the device (1) is pushed during the printing process stepwise or continuously through the device while the contour layer (3) is applied.
    16. The method according to claim 15, characterized in that the device (1) is pushed during the printing process stepwise or continuously through the device while the contour layer (3) is applied.
    [17]
    17. The method according to any one of claims 14 to 16, characterized in that the 3D model used for the production is created on the basis of a 3D scan of a surface with deposits.
    17. The method according to any one of claims 14 to 16, characterized in that the 3D model used for the production is created on the basis of a 3D scan of a surface with deposits.
    [18]
    18. The method according to any one of claims 14 to 16, characterized in that the 3D model used for the production is created on the basis of a computer-aided simulation model.
    18. The method according to any one of claims 14 to 16, characterized in that the 3D model used for the production is created on the basis of a computer-aided simulation model.
    [19]
    19. The method according to claim 17, characterized in that first the surface is scanned 3D before applying deposits and after applying the deposits, these scans are optionally processed and subtracted from each other, and so a 3D model is obtained.
    19. The method according to claim 17, characterized in that first the surface is scanned 3D before applying deposits and after applying the deposits, these scans are optionally processed and subtracted from each other, and so a 3D model is obtained.
    [20]
    20. The method according to any one of claims 17 to 19, characterized in that the 3D model is handled flat.
    20. The method according to any one of claims 17 to 19, characterized in that the 3D model is handled flat.
    [21]
    21. The method according to any one of claims 14 to 20, characterized in that on the outer surface (7) of the device (1) a cover layer (4) is applied.
    21. The method according to any one of claims 14 to 20, characterized in that on the outer surface (7) of the device (1) a cover layer (4) is applied.
    [22]
    22. The method according to any one of claims 14 to 21, characterized in that on the contour layer (3) or optionally covering layer (4) an adhesive layer, such as a resin, is applied, and then with particles of a certain size, or certain Size distribution is sprinkled.
    22. The method according to any one of claims 14 to 21, characterized in that on the contour layer (3) or optionally covering layer (4) an adhesive layer, such as a resin, is applied, and then with particles of a certain size, or certain Size distribution is sprinkled.
    [23]
    23. The method according to any one of claims 14 to 22, characterized in that a correction algorithm compensates for the resulting by the application of the device (1) on the surface distortions of the contour.
    23. The method according to any one of claims 14 to 22, characterized in that a correction algorithm compensates for the resulting by the application of the device (1) on the surface distortions of the contour.
    [24]
    24. The method according to any one of claims 14 to 23, characterized in that while the base layer (2) is at least partially held or stretched on the detained or tensioned area, the contour layer (3) is applied.
    24. The method according to any one of claims 14 to 23, characterized in that while the base layer (2) is at least partially held or stretched and the contoured layer (3) is applied to the detained or tensioned area.
    [25]
    25. The method according to any one of claims 14 to 24, characterized in that markings are printed directly.
    25. The method according to any one of claims 14 to 24, characterized in that markings are printed directly.
    26. A method for testing aircraft or aircraft parts, wherein a device (1) for simulating ice deposits on a surface of the aircraft or aircraft part is mounted, the test is carried out and then the device (1) is removed, characterized in that the Device (1) according to one of claims 1 to 13 is formed. P A T E N T A N S P R E C H E
    [26]
    26. A method for testing aircraft or aircraft parts, comprising a device (1) for simulating ice deposits on a surface according to one of claims 1 to 13, characterized in that the device (1) is mounted on a surface of the aircraft or aircraft part, the test is carried out and then the device (1) is removed again.
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    同族专利:
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    AT519954B1|2018-12-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20160076968A1|2014-09-16|2016-03-17|The Boeing Company|Systems and methods for icing flight tests|
    US3397302A|1965-12-06|1968-08-13|Harry W. Hosford|Flexible sheet-like electric heater|
    US4526031A|1983-01-10|1985-07-02|The B. F. Goodrich Company|Method and apparatus for prognosticating potential ice accumulation on a surface exposed to impact icing|
    US6279856B1|1997-09-22|2001-08-28|Northcoast Technologies|Aircraft de-icing system|
    WO2001096695A1|2000-06-15|2001-12-20|Saint-Gobain Performance Plastics Corporation|Composite membrane for control of interior environments|
    US7601653B2|2001-06-26|2009-10-13|Shurtech Brands LLC|Adhesive grip liner|
    RU2470278C1|2011-07-11|2012-12-20|Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации |Ice simulator manufacturing method|
    US10201703B2|2012-02-02|2019-02-12|The United States Of America, As Represented By The Department Of Veterans Affairs|Integrated surface stimulation device for wound therapy and infection control|
    CN102700723B|2012-05-17|2018-11-30|中国商用飞机有限责任公司|A kind of installation method of the simulation ice shape product for aircraft|CN112140553A|2020-07-30|2020-12-29|中山大学|3D printing-based navigation body manufacturing method capable of controllably positioning high-precision center of mass|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50802/2017A|AT519954B1|2017-09-21|2017-09-21|DEVICE FOR SIMULATION OF DEPOSITS|ATA50802/2017A| AT519954B1|2017-09-21|2017-09-21|DEVICE FOR SIMULATION OF DEPOSITS|
    PCT/AT2018/060201| WO2019056030A1|2017-09-21|2018-09-06|Device for simulating accretions|
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