Pylon including a primary structure formed of at least one longeron and one panel assembled by welding

{
  "publication_number": "US11807373B2",
  "country": "US",
  "kind": "B2",
  "title": "Pylon including a primary structure formed of at least one longeron and one panel assembled by welding",
  "abstract": "The pylon, intended to support a flying vehicle engine, includes a primary structure formed by at least one longeron and one panel, the panel including at least one end part provided with a notch, the longeron being provided with an end adapted to be positioned in the notch, the panel and the longeron being assembled by welding a part of the end to a part of the notch. A welded primary structure enables minimization of the blanks of parts associated with the longerons and with the panels by avoiding having recourse to the production of edges.",
  "claims": [
    "1. A pylon intended to support an engine of a flying vehicle, said pylon comprising a primary structure formed by at least one longeron and a first panel and a second panel, wherein said first panel comprises at least one first end part in which is formed a first notch including a first lip, said second panel comprises at least one second end part in which is formed a second notch including a second lip, said at least one longeron provided with a first end adapted to be positioned in the first notch and a second end adapted to be positioned in the second notch, said first and second panels and said at least one longeron assembled by welding at least a part of said first end and said second end of said at least one longeron to at least a part of said first notch and second notch, respectively, said first end including a first surface part of said at least one longeron, said second end including a second surface part of said at least one longeron, said first surface part and said first lip of the first notch spaced apart from one another, and said second surface part and said second lip of the second notch spaced apart from one another.",
    "2. The pylon as claimed in claim 1, wherein said first notch is formed of a first abutment, said first end of said at least one longeron including a first contact face, at least a part of said first abutment conformed to said first contact face.",
    "3. The pylon as claimed in claim 1, wherein the first lip is arranged in a plane parallel to said at least one longeron, said first lip forming an angle with the first abutment equal to 90 degrees.",
    "4. The pylon as claimed in claim 1, wherein the first lip is arranged in a plane parallel to said at least one longeron, said first lip forming an angle with the first abutment greater than 90 degrees.",
    "5. The pylon as claimed in claim 2, wherein the weld is produced on a junction surface of at least a part of said first abutment with said first contact face.",
    "6. The pylon as claimed in claim 1, wherein the weld is produced in a continuous manner along said first end of the at least one longeron.",
    "7. The pylon as claimed in claim 1, wherein the weld is produced in a discontinuous manner along said first end of the at least one longeron.",
    "8. A method of welding the first panel, the second panel and at least one longeron forming part of the pylon as claimed in claim 1, said method comprising: producing the first notch in the first end part of said first panel; producing the second notch in the second end part of said second panel; positioning said first end and said second end of said at least one longeron in said first notch in said first panel and in said second notch in said second panel, respectively; and welding a part of said first end of said at least one longeron to at least a part of said first notch and welding a part of said second end of said at least one longeron to least a part of said second notch.",
    "9. A flying vehicle comprising a pylon as claimed in claim 1.",
    "10. An aircraft comprising a pylon as claimed in claim 1."
  ],
  "description_excerpt": "The present invention concerns a pylon intended to support an aircraft engine under an aircraft wing, the pylon including a primary structure formed by at least one longeron and one panel assembled by welding, as well as an aircraft provided with such a pylon.\n\nAs a general rule, a flying vehicle such as an aircraft, in particular a transport aircraft, is propelled by engines. Here is meant by engine any type of propulsion means such as a turboprop, a turbojet, etc. Each engine may be attached by a pylon under a wing, also known as an airfoil, to the fuselage of an aircraft or to other elements such as the tail unit. A pylon usually supports the engine and transmits the forces generated by the operation of the engine to the airfoil of the aircraft. It also enables the transmission of fuel, electricity, hydraulics and air between the engine and the aircraft. To fulfill its functions the pylon includes a rigid primary structure preferably made of titanium. This primary structure is formed of a plurality of ribs arranged successively in a longitudinal direction and constituting the framework of a “box section” type compartment. The ribs connect an upper longeron and a lower longeron while panels arranged laterally complete the box section. Each longeron is generally fixed by its edges to the side panels by means of bolt type fixing means.\n\nThe manufacture of a primary structure usually entails the production of blanks of the parts that respectively correspond to the side panels and to the upper and lower longerons. Each blank is machined in order to obtain the side panels and the longerons forming the primary structure.",
  "cpc": [
    "B64D 29/06",
    "B64C 3/32",
    "B64D 2027/266",
    "B64D 27/26",
    "B64D 27/40",
    "B64D 27/402",
    "B64D 27/404",
    "B64F 5/10",
    "F02C 7/20",
    "F16B 5/08",
    "Y02T 50/40"
  ],
  "ipc": [
    "B64D 27/40",
    "B64F 5/10",
    "F16B 5/08"
  ],
  "assignees": [
    "AIRBUS OPERATIONS SAS"
  ],
  "inventors": [
    "ALLAIN JULIEN",
    "DIDA STÉPHANE",
    "COLMAGRO JÉROME",
    "DUBOIS OLIVIER",
    "MOULIS JULIEN",
    "PUECH JACKY",
    "LAFONT LAURENT"
  ],
  "filing_date": "2020-10-27",
  "publication_date": "2023-11-07",
  "grant_date": "2023-11-07",
  "priority_date": "2019-10-30",
  "application_number": "US-202017081193-A",
  "family_id": "69700009",
  "citations": [
    "EP3476739A1",
    "EP3476740A1",
    "US2014151497A1",
    "US2019127073A1",
    "US2019127074A1"
  ]
}