FR2759970B1 - Structure cellulaire - Google Patents

Structure cellulaire

Info

Publication number
FR2759970B1
FR2759970B1 FR9800617A FR9800617A FR2759970B1 FR 2759970 B1 FR2759970 B1 FR 2759970B1 FR 9800617 A FR9800617 A FR 9800617A FR 9800617 A FR9800617 A FR 9800617A FR 2759970 B1 FR2759970 B1 FR 2759970B1
Authority
FR
France
Prior art keywords
absorbers
outer skin
lined
recesses
damping layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9800617A
Other languages
English (en)
Other versions
FR2759970A1 (fr
Inventor
Horst Bansemir
Georg Niesl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Helicopters Deutschland GmbH
Original Assignee
Eurocopter Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eurocopter Deutschland GmbH filed Critical Eurocopter Deutschland GmbH
Publication of FR2759970A1 publication Critical patent/FR2759970A1/fr
Application granted granted Critical
Publication of FR2759970B1 publication Critical patent/FR2759970B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
    • B64C1/12—Construction or attachment of skin panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/001—Vibration damping devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C2001/0054—Fuselage structures substantially made from particular materials
    • B64C2001/0072—Fuselage structures substantially made from particular materials from composite materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C2001/0054—Fuselage structures substantially made from particular materials
    • B64C2001/0081—Fuselage structures substantially made from particular materials from metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/001—Vibration damping devices
    • B64C2027/005—Vibration damping devices using suspended masses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Vibration Prevention Devices (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vibration Dampers (AREA)
  • Laminated Bodies (AREA)
FR9800617A 1997-02-22 1998-01-21 Structure cellulaire Expired - Fee Related FR2759970B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19707123A DE19707123C1 (de) 1997-02-22 1997-02-22 Zellenstruktur

Publications (2)

Publication Number Publication Date
FR2759970A1 FR2759970A1 (fr) 1998-08-28
FR2759970B1 true FR2759970B1 (fr) 2002-05-24

Family

ID=7821177

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9800617A Expired - Fee Related FR2759970B1 (fr) 1997-02-22 1998-01-21 Structure cellulaire

Country Status (3)

Country Link
DE (1) DE19707123C1 (fr)
FR (1) FR2759970B1 (fr)
IT (1) IT1298184B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2126899A1 (fr) * 2007-02-21 2009-12-02 Fachhochschule Dortmund Résonateur à large bande pour réduire les vibrations et le bruit de pièces excitées par vibrations, notamment de pièces techniques
DE102019106685B4 (de) * 2019-03-15 2021-01-21 Hochschule für Angewandte Wissenschaften Hamburg Schallabsorber mit einem Helmholtz-Resonator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2261872B1 (fr) * 1974-02-26 1976-06-25 Snecma
US4421201A (en) * 1981-09-29 1983-12-20 The Boeing Company High efficiency broadband acoustic resonator and absorption panel

Also Published As

Publication number Publication date
DE19707123C1 (de) 1998-04-16
FR2759970A1 (fr) 1998-08-28
ITMI980113A1 (it) 1999-07-23
IT1298184B1 (it) 1999-12-20

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Legal Events

Date Code Title Description
GC Lien (pledge) constituted
ST Notification of lapse

Effective date: 20091030