• 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:
    METHOD FOR FORMING A PROBE, AND, AIR DATA PROBE. A method for forming an air data probe comprises the steps of using an additive manufacturing technique to arrange a portion of an air data probe wall and also using an additive manufacturing technique to arrange a conductive portion of an element heater inside the wall. An air data probe is also released
    公开号:BR102015025608B1
    申请号:R102015025608-6
    申请日:2015-10-07
    公开日:2020-12-01
    发明作者:William Louis Wentland；Eric Karlen；Matthew P. Anderson
    申请人:Rosemount Aerospace Inc.；
    IPC主号:
    专利说明:

    BACKGROUND OF THE INVENTION
    [001] This order refers to an air data probe for use in aircraft applications and in which electric heating elements are embedded in a probe wall.
    [002] Modern aircraft are becoming more sophisticated and require accurate information. Controls for modern aircraft must know an airspeed accurately. As part of determining airspeed, an air data probe is often mounted at a location on an aircraft body.
    [003] Modern air data probes draw in air and evaluate this air to determine air velocity and other parameters (such as altitude, angle of attack, side slip angle) of an aircraft carrying the probe. One challenge is that aircraft often operate in extremely cold environments.
    [004] As such, air data probes are often provided with heating elements. Standard air data probes as manufactured will typically include an outer wall formed of a metal. The heating elements are then mounted within an inner periphery of that wall. Naturally, the assembly of the heating elements within the inner periphery keeps them away from the other outer surface of the air data probe.
    [005] It has been proposed to fuse heating elements inside a body of an air data probe. However, casting processes can result in degradation of the heater assembly. In addition, a dielectric material and coating are often placed between the electrical heating element and the material that forms the wall separated by the coating. The dielectric material and coating can also be subject to degradation in casting processes. SUMMARY OF THE INVENTION
    [006] A method for forming an air data probe comprises the steps of (1) using an additive manufacturing technique to arrange a portion of an air data probe wall and (2) also using a manufacturing technique additive to arrange a conductive portion of a heating element within the wall. An air data probe is also disclosed.
    [007] These and other characteristics can be better understood from the following drawings and the specification. BRIEF DESCRIPTION OF THE DRAWINGS
    [008] Figure 1 shows an air data probe mounted on an aircraft.
    [009] Figure 2A shows a first step in the formation of the air data probe.
    [0010] Figure 2B shows a subsequent step.
    [0011] Figure 2C shows a portion of the air data probe as manufactured. DETAILED DESCRIPTION
    [0012] Figure 1 shows an aircraft body 20 schematically. An air data probe 22 is mounted on the aircraft body. The air data probe 22 has a branch 24 at a front end. Lead 24 will sample an air portion W when the aircraft moves through the air. The derived air will move to an opening 28 in a tube 26 and to a pitot pressure derivation 30. The pressure derivation 30 is shown by communicating with a control 31. The control 31 will translate the derived pressure into a body air velocity of aircraft 20. In addition, a static pressure tap 32 is used and communicates with control 31. A hole 33 provides a tap to communicate air for static pressure tap 32. The details for translating derived pressures into an air velocity may be as they are known and are not part of this disclosure.
    [0013] The wall 34 of the air data probe is formed as it is a front nozzle 36 receiving the tube 26. An electric heater connection 38 communicates with the control 31 and supplies electrical energy to the heating elements 40. In addition, sensors 42 can be embedded within wall 34. Sensors 42 can be temperature sensors, as an example. Temperature sensors 42 also communicate back to control 31. The heating elements 40 are supplied with electrical current to generate heat and are embedded within the wall 34. As such, the heating elements 40 are closer to an external periphery 41 of the air data probe 22 than has been the case with the traditional air data probe.
    [0014] The sensor 42 will communicate a temperature of the wall 34, as an example, for the control 31. The control 31 can, thus, control the current supplied to the heating element 40 based on the detected temperature and ensure the proper operation.
    [0015] Figures 2A and 2B show a method for forming the air data probe 22. The so-called "additive manufacturing" techniques are used to form the air data probe 22 and the embedded elements 40 and sensors 42. Although any number of additive manufacturing techniques can be used, additive manufacturing techniques are suggested to form a suitable wall material structure that is a good temperature conductor, as well as depositing electrical elements 40 and 42. Typically, metal is used to the wall 34 and the nozzle 36, as well as the electrical components 40 and 42.
    [0016] Liquid-engineered additive manufacturing techniques engineered by laser can be used. Laser sintering or powder feeding technology can be used. Alternatively, a laser can be used to melt wire to form the electrical conductor and sensor portions 40 and 42. Other additive manufacturing techniques, such as electron beam fusion, can also be used.
    [0017] As shown in Figure 2A, a portion of the wall 34 is being formed by an additive manufacturing tool 50. Another tool 52 is shown in phantom and deposits a dielectric material. Tools 50 and 52 can be a single tool of additive manufacturing and simply, feeding to a laser, which forms a portion of these tools may differ when wall 34 is being formed, compared to material 46. The dielectric material insulates a conductor portion of the heating element 40.
    [0018] As shown in Figure 2B, another tool 54 can deposit a conductor portion 44 of the heating element 40. Again, a laser can be used as a portion of tool 54 and a single laser can be used for each of the tools 50 , 52 and 54, with the feeds for the lasers simply being switched between materials.
    [0019] In addition, as shown in Figure 2B, sensor 42 may have been previously formed in a similar manner.
    [0020] Figure 2C shows the final wall 34 having the heating element 40 with a portion of internal electrical conductor 44 and a dielectric material 46. The dielectric material serves to electrically isolate the conductor 44, but is preferably a good transmitter of heat, so that the heat of the conductor 44 reaches the outer surface 41 of the wall 34. The tube 26 and the nozzle 36 are formed in a similar way and of the same material as the wall 34.
    [0021] With the disclosed modality, a one-piece air data probe provides better operational characteristics than the previous technique.
    [0022] Although a modality of this invention has been disclosed, a worker ordinarily skilled in this technique would recognize that certain modifications would come within the scope of this invention. For that reason, the following claims must be studied to determine the true scope and content of this invention.
    权利要求:
    Claims (14)
    [0001]
    1. Method for forming an air data probe (22), characterized by the fact that it comprises the steps of: (a) using an additive manufacturing technique to arrange a portion of a wall (34) of an air data probe (22); and (b) also using an additive manufacturing technique to arrange a conductive portion (44) of a heating element (40) within the wall (34).
    [0002]
    2. Method according to claim 1, characterized by the fact that the method further includes the step of using an additive manufacturing technique to dispose a dielectric material (46) that insulates the conductive portion (44) of the wall (34).
    [0003]
    Method according to claim 2, characterized by the fact that the wall (34) is formed of a metal.
    [0004]
    4. Method according to claim 2, characterized by the fact that additive manufacturing techniques include the use of a laser.
    [0005]
    5. Method according to claim 4, characterized by the fact that the laser uses laser powder feeding technology.
    [0006]
    6. Method according to claim 4, characterized by the fact that the sensors are also formed inside the wall by additive manufacturing techniques.
    [0007]
    7. Method according to claim 2, characterized by the fact that a tube (26) is also formed to communicate an air pressure derived from a front end of the air data probe (22) to a location outside the data probe of air (22).
    [0008]
    8. Method according to claim 7, characterized by the fact that the tube (26) is also formed by additive manufacturing techniques.
    [0009]
    9. Method according to claim 8, characterized by the fact that the tube (26) is formed of the same material as the wall (34).
    [0010]
    10. Method according to claim 1, characterized by the fact that additive manufacturing techniques include the use of a laser.
    [0011]
    11. Method according to claim 1, characterized by the fact that the sensors (42) are also formed inside the wall (34) by additive manufacturing techniques.
    [0012]
    12. Air data probe (22) comprising: a wall (34), a nozzle (36) extending through a hollow interior of the wall (34), an opening (24) formed at a front end of the wall (34) to provide an air bypass and the opening (24) communicating with an opening of a tube (26) mounted inside the nozzle (36) and the tube (26) extending to an outer end of the air data probe (22) ; and at least the wall (34) being formed with a heating element (40) and at least one temperature sensor (42), with the temperature sensor (42) and the heating element (40) being embedded in the wall (34) and characterized by the fact that the air data probe (22), including sensors (42) and heating elements (40), is formed by additive manufacturing techniques.
    [0013]
    Air data probe (22) according to claim 12, characterized in that the heating elements (40) are provided with an insulating dielectric material (46) to isolate a conductor portion (44) from the heating element (40) of the wall (34).
    [0014]
    Air data probe (22) according to claim 12, characterized in that the wall (34), the nozzle (36) and the tube (26) are formed of a metal.
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    同族专利:
    公开号 | 公开日
    US20160304210A1|2016-10-20|
    EP3009847B1|2017-08-02|
    EP3009847A1|2016-04-20|
    BR102015025608A2|2016-04-19|
    CA2906012A1|2016-04-15|
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    法律状态:
    2016-04-19| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-10-30| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-04-22| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-10-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-01| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/10/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US14/514,462|US20160304210A1|2014-10-15|2014-10-15|One-piece air data probe|
    US14/514,462|2014-10-15|
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