IT1298184B1 - Struttura cellulare, specialmente per elicotteri. - Google Patents

Struttura cellulare, specialmente per elicotteri.

Info

Publication number
IT1298184B1
IT1298184B1 IT98MI000113A ITMI980113A IT1298184B1 IT 1298184 B1 IT1298184 B1 IT 1298184B1 IT 98MI000113 A IT98MI000113 A IT 98MI000113A IT MI980113 A ITMI980113 A IT MI980113A IT 1298184 B1 IT1298184 B1 IT 1298184B1
Authority
IT
Italy
Prior art keywords
absorbers
outer skin
lined
recesses
damping layer
Prior art date
Application number
IT98MI000113A
Other languages
English (en)
Italian (it)
Inventor
Horst Bansemir
Georg Niesl
Original Assignee
Eurocopter Deutschland
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 filed Critical Eurocopter Deutschland
Publication of ITMI980113A1 publication Critical patent/ITMI980113A1/it
Application granted granted Critical
Publication of IT1298184B1 publication Critical patent/IT1298184B1/it

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)
IT98MI000113A 1997-02-22 1998-01-23 Struttura cellulare, specialmente per elicotteri. IT1298184B1 (it)

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
ITMI980113A1 ITMI980113A1 (it) 1999-07-23
IT1298184B1 true IT1298184B1 (it) 1999-12-20

Family

ID=7821177

Family Applications (1)

Application Number Title Priority Date Filing Date
IT98MI000113A IT1298184B1 (it) 1997-02-22 1998-01-23 Struttura cellulare, specialmente per elicotteri.

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
FR2759970B1 (fr) 2002-05-24

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Legal Events

Date Code Title Description
0001 Granted