Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020115960 - PRESSURE VARIATION ABSORBING STRUCTURE, AND THIN FILM FOR SUPPRESSING PRESSURE VARIATION

Publication Number WO/2020/115960
Publication Date 11.06.2020
International Application No. PCT/JP2019/033834
International Filing Date 29.08.2019
IPC
G10K 11/16 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
B32B 3/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
3Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
10characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
24characterised by an apertured layer, e.g. of expanded metal
B32B 5/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5Layered products characterised by the non-homogeneity or physical structure of a layer
22characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
32both layers being foamed or specifically porous
B64C 1/40 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
CAEROPLANES; HELICOPTERS
1Fuselages; Constructional features common to fuselages, wings, stabilising surfaces, or the like
40Sound or heat insulation
B64D 33/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
33Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
G10K 11/168 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162Selection of materials
168Plural layers of different materials, e.g. sandwiches
Applicants
  • 国立研究開発法人宇宙航空研究開発機構 JAPAN AEROSPACE EXPLORATION AGENCY [JP]/[JP]
Inventors
  • 石井 達哉 ISHII, Tatsuya
  • 生沼 秀司 OINUMA, Hideshi
  • 長井 健一郎 NAGAI, Kenichiro
  • 榎本 俊治 ENOMOTO, Shunji
Agents
  • 大森 純一 OMORI, Junichi
Priority Data
2018-22669403.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PRESSURE VARIATION ABSORBING STRUCTURE, AND THIN FILM FOR SUPPRESSING PRESSURE VARIATION
(FR) STRUCTURE D'ABSORPTION DE VARIATION DE PRESSION, ET FILM MINCE PERMETTANT DE SUPPRIMER LA VARIATION DE PRESSION
(JA) 圧力変動吸収構造体及び圧力変動抑制用の薄膜
Abstract
(EN)
[Problem] To provide a pressure variation absorbing structure in which it is possible to prevent degradation in pressure variation absorbing performance caused by an air current on a surface and to prevent deviation of a resonance frequency. [Solution] A sound absorbing panel 1 is configured by bonding a thin film 20a to a surface of a sound absorbing panel body 10 using, for example, a bonding agent. The sound absorbing panel body 10 has a sound absorbing hole 14 in the surface thereof. A large number of small holes 21 are formed in the thin film 20, and a plurality of small holes 21 are formed in a region R14 corresponding to at least the hole 14.
(FR)
L’objectif de l’invention est de fournir une structure d'absorption de variation de pression dans laquelle il est possible d'empêcher une dégradation de la performance d'absorption de variation de pression provoquée par un courant d'air sur une surface et d'empêcher l'écart d'une fréquence de résonance. À cet effet, l'invention concerne un panneau d'absorption de son (1) qui est configuré en liant un film mince (20a) à une surface d'un corps de panneau d'absorption de son (10) à l'aide, par exemple, d'un agent de liaison. Le corps du panneau d'absorption sonore (10) possède un trou d'absorption sonore (14) dans sa surface. Un grand nombre de petits trous (21) sont formés dans le film mince (20), et une pluralité de petits trous (21) sont formés dans une zone R14 correspondant au moins au trou (14).
(JA)
【課題】表面の気流による圧力変動吸収性能の低下及び共鳴周波数の乖離を抑制することができる圧力変動吸収構造体を提供すること。 【解決手段】吸音パネル1は、吸音パネル本体10の表面に、薄膜20を例えば接着剤を使って貼付して構成される。吸音パネル本体10は、表面に吸音用の孔14が設けられている。薄膜20は、多数の小孔21が穿孔され、少なくとも上記の孔14に対応する領域R14には複数の小孔21が穿孔されている。
Latest bibliographic data on file with the International Bureau