[go: up one dir, main page]

FR2367660A1 - Application du dephasage des ondes sonores - Google Patents

Application du dephasage des ondes sonores

Info

Publication number
FR2367660A1
FR2367660A1 FR7632663A FR7632663A FR2367660A1 FR 2367660 A1 FR2367660 A1 FR 2367660A1 FR 7632663 A FR7632663 A FR 7632663A FR 7632663 A FR7632663 A FR 7632663A FR 2367660 A1 FR2367660 A1 FR 2367660A1
Authority
FR
France
Prior art keywords
sound waves
silencing
phase
jet aircraft
exactly out
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.)
Granted
Application number
FR7632663A
Other languages
English (en)
Other versions
FR2367660B3 (fr
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.)
GUEGUEN ALAIN GILBERT
Original Assignee
GUEGUEN ALAIN GILBERT
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 GUEGUEN ALAIN GILBERT filed Critical GUEGUEN ALAIN GILBERT
Priority to FR7632663A priority Critical patent/FR2367660A1/fr
Publication of FR2367660A1 publication Critical patent/FR2367660A1/fr
Application granted granted Critical
Publication of FR2367660B3 publication Critical patent/FR2367660B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/04—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of exhaust outlets or jet pipes
    • B64D33/06—Silencing exhaust or propulsion jets
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

Dispositif permettant d'atténuer ou de supprimer les bruits aéronautiques. Il comprend le déphasage des ondes sonores, infra et ultra sonores. Ce déphasage étant obtenu par la mise en route successive des organes propulseurs de l'aéronef considéré. L'invention peut être utilisée pour la lutte contre les bruits aéronautiques.
FR7632663A 1976-10-14 1976-10-14 Application du dephasage des ondes sonores Granted FR2367660A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7632663A FR2367660A1 (fr) 1976-10-14 1976-10-14 Application du dephasage des ondes sonores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7632663A FR2367660A1 (fr) 1976-10-14 1976-10-14 Application du dephasage des ondes sonores

Publications (2)

Publication Number Publication Date
FR2367660A1 true FR2367660A1 (fr) 1978-05-12
FR2367660B3 FR2367660B3 (fr) 1979-07-13

Family

ID=9179348

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7632663A Granted FR2367660A1 (fr) 1976-10-14 1976-10-14 Application du dephasage des ondes sonores

Country Status (1)

Country Link
FR (1) FR2367660A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586130A1 (fr) * 1985-08-09 1987-02-13 Gen Electric Reduction du bruit des helices d'un avion
EP0313944A1 (fr) * 1987-10-20 1989-05-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Méthode pour la réduction du bruit de survol pour avions munis d'une hélice entraînée par un moteur à pistons

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586130A1 (fr) * 1985-08-09 1987-02-13 Gen Electric Reduction du bruit des helices d'un avion
EP0313944A1 (fr) * 1987-10-20 1989-05-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Méthode pour la réduction du bruit de survol pour avions munis d'une hélice entraînée par un moteur à pistons

Also Published As

Publication number Publication date
FR2367660B3 (fr) 1979-07-13

Similar Documents

Publication Publication Date Title
GB1513030A (en) Sound wave suppressing panel for use with an exhaust duct
GB1495147A (en) Surface acoustic wave devices
JPS5219044A (en) Surface acoustic wave filter
FR2367660A1 (fr) Application du dephasage des ondes sonores
JPS51138362A (en) Grouped unidirectional elastic surface wave filter
JPS52134139A (en) Muffling device
JPS52124690A (en) Structure for sound prof and vibration proof in ship by main engine
JPS53132246A (en) Elastic surface wave filter
GB1507458A (en) Bulk acoustic wave devices
JPS564916A (en) Elastic surface wave filter
JPS55115712A (en) Elastic surface wave filter
JPS5762616A (en) Filter circuit using surface acoustic wave filter
JPS5322348A (en) Filter unit
JPS5239390A (en) Temperature compensation type piezoelectric vibrator
MARINOV Reduction of diesel engine exhaust noise in the petroleum mining industry(by resonator type diffuser)
JPS5245921A (en) Speaker of full surface driven type
JPS52139402A (en) Reverberation adding system
JPS5769919A (en) Surface acoustic wave device
JPS5242011A (en) Signal duplex transmission system
JPS52130265A (en) Elastic surface wave delay line
JPS5316619A (en) Acoustic damping board
JPS52140252A (en) Surface supersonic delay line
JPS5340557A (en) Position guiding system
GB1321073A (en) Acoustic attenuators
JPS5567203A (en) Circular polarized wave feed unit

Legal Events

Date Code Title Description
ST Notification of lapse