公开(公告)号：US6119521A

公开(公告)日：2000-09-19

申请号：US62906

申请日：1998-04-20

Applicant: Belur Shivashankara ,  Fredrick M. Hutto ,  Noe Arcas ,  Charles A. Parente ,  Ronald F. Olsen

Inventor： Belur Shivashankara ,  Fredrick M. Hutto ,  Noe Arcas ,  Charles A. Parente ,  Ronald F. Olsen

IPC: G01N29/11 ,  G01N29/04

CPC classification number: G01N29/11 ,  G01N2291/105 ,  G01N2291/2694

Abstract: A device for measuring the acoustic absorption properties of materials such as liners for jet engines has a first housing, an acoustic driver configured to provide acoustic energy to the first housing, a second housing attached to the first housing, and an acoustic driver configured to provide acoustic energy to the second housing. Acoustic sensors are used to measure the acoustic energy emitted from the two housings and to measure the absorption of each of the housings.

Abstract translation: 用于测量诸如喷气发动机的衬垫的材料的吸声性能的装置具有第一壳体，被配置为向第一壳体提供声能的声学驱动器，连接到第一壳体的第二壳体和配置成提供 声能到第二壳体。 声学传感器用于测量从两个壳体发出的声能并测量每个壳体的吸收。

公开(公告)号：US5684251A

公开(公告)日：1997-11-04

申请号：US412387

申请日：1995-03-28

Applicant: Noe Arcas ,  Charles A. Parente ,  Shepard G. Kay

Inventor： Noe Arcas ,  Charles A. Parente ,  Shepard G. Kay

IPC: G01N29/00 ,  G01N29/09 ,  G01N29/04

CPC classification number: G01N29/09 ,  G01N2291/02491 ,  G01N2291/02836 ,  G01N2291/02863 ,  G01N2291/02872 ,  G01N2291/2694

Abstract: A portable two microphone acoustic impedance data acquisition and analysis system provided in a lightweight, fully portable, battery powered instrument with a dual capability of either on-site or remote-site analysis of measured data on the acoustic impedance of acoustically absorbing duct liners of aircraft jet engines. The fully portable instrument is capable of being operated by relatively unskilled personnel to provide acoustic impedance and non-linearity measurements on acoustic liners at airports and aircraft maintenance facilities. The measured data on the engine duct acoustic liner can be an input directly to the data analysis system at the data acquisition site for on-site analysis, or can be recorded for input to a data analysis system at a later time, or can be recorded and transmitted, such as by a telephone modem, to a data analysis system at a remote-site. The remote-site analysis of data eliminates the requirement for skilled personnel at the aircraft to perform the relatively complex data analysis procedures.

Abstract translation: 便携式双麦克风声阻抗数据采集和分析系统，提供在轻型，完全便携式，电池供电的仪器中，具有双重功能，可对现场或远程现场分析航空器吸声管道衬垫的声阻抗测量数据 喷气发动机。 完全便携式仪器能够由相对不熟练的人员操作，以在机场和飞机维修设施的声学衬垫上提供声学阻抗和非线性测量。 发动机管道声衬垫上的测量数据可以直接输入到数据采集现场分析系统的数据分析系统进行现场分析，也可以在以后记录下来输入数据分析系统，或者可以记录 并且例如通过电话调制解调器发送到远程站点处的数据分析系统。 数据的远程现场分析消除了对飞行员熟练人员执行相对复杂的数据分析程序的要求。

公开(公告)号：US5014815A

公开(公告)日：1991-05-14

申请号：US371398

申请日：1989-06-26

Applicant: Noe Arcas ,  Charles A. Parente

Inventor： Noe Arcas ,  Charles A. Parente

IPC: B64C1/40 ,  F02K1/82 ,  G10K11/172

CPC classification number: G10K11/172 ,  F02K1/827 ,  B64D2033/0286 ,  Y02T50/672

Abstract: An acoustic liner comprising a sound permeable inside plate forming a first closed annulus, and a sound impermeable outside plate forming a second closed annulus located outside of and extending around the first closed annulus. The inside and outside plates are spaced apart and thus form an annular chamber therebetween; and a core member is secured in this annular chamber, between the inside and outside plates. The core member forms or has the shape of a sine wave form annularly extending around the inside plate, and the core member and the inside plate from a multitude of varying depth sound absorption chambers to attenuate sound waves over a broad band of frequencies.

Abstract translation: 包括形成第一闭环的透声内板的声学衬垫和形成位于第一闭环之外并围绕第一闭环的第二闭环的不透声外板。 内板和外板间隔开，从而在它们之间形成环形室; 并且芯构件固定在该环形室中，内外板之间。 芯构件形成或具有围绕内板环形延伸的正弦波形状，以及来自多个变化深度吸声室的芯构件和内板，以在宽频带上衰减声波。

公开(公告)号：US4969535A

公开(公告)日：1990-11-13

申请号：US371593

申请日：1989-06-26

Applicant: Noe Arcas ,  Charles A. Parente

Inventor： Noe Arcas ,  Charles A. Parente

IPC: B64C1/40 ,  B64D33/02

CPC classification number: B64D33/02 ,  B64D2033/0206 ,  B64D2033/0286

Abstract: An acoustic liner comprising a sound permeable inside plate forming a first closed annulus, and a sound impermeable outside plate forming a second closed annulus located outside of and extending around the first closed annulus. The inside and outside plates are spaced apart and thus form an annular chamber therebetween; and a core member is secured in this annular chamber, between the inside and outside plates. The core member forms or has the shape of a sine wave form annularly extending around the inside plate, and the core member and the inside plate form a multitude of varying depth sound absorption chambers to attenuate sound waves over a broad band of frequencies.

Abstract translation: 包括形成第一闭环的透声内板的声学衬垫和形成位于第一闭环之外并围绕第一闭环的第二闭环的不透声外板。 内板和外板间隔开，从而在它们之间形成环形室; 并且芯构件固定在该环形室中，内外板之间。 芯构件形成或具有围绕内板环形延伸的正弦波形状，并且芯构件和内板形成多个变化的深度吸声室，以在宽频带上衰减声波。

公开(公告)号：US06176964B1

公开(公告)日：2001-01-23

申请号：US08954270

申请日：1997-10-20

Applicant: Charles A. Parente ,  Charles J. Weizenecker

Inventor： Charles A. Parente ,  Charles J. Weizenecker

IPC: C09J510

CPC classification number: G10K11/172 ,  Y10T442/11

Abstract: An acoustic liner employable in jet engine housing construction for sound absorption such as for inclusion in nacelle components. The liner has a solid backface sheet having a surface to which is attached a first side of a honeycomb core structure. Attached to the opposing second side of the honeycomb core structure is a mesh structure to which is attached a perforated face sheet to be exposed to the exterior. As is thus apparent, the liner of the present invention provides a mesh situated below a protective perforate sheet. This construction produces an acoustic liner having substantially the efficiency of a linear liner system and the durability of a perforate face sheet system.

Abstract translation: 声学衬垫可用于喷气发动机壳体结构中用于吸声，例如包含在机舱部件中。 衬垫具有固体背面片，其表面附着有蜂窝芯结构的第一侧。 与蜂窝芯结构的相对的第二侧相邻的是网状结构，其上附着有暴露于外部的穿孔面片。 如此显而易见的是，本发明的衬垫提供了位于保护穿孔片下方的网。 这种结构产生具有基本上线性衬垫系统的效率和穿孔面片系统的耐久性的声学衬垫。

公开(公告)号：US5965044A

公开(公告)日：1999-10-12

申请号：US910945

申请日：1997-08-14

Applicant: James A. Clarke ,  Charles A. Parente

Inventor： James A. Clarke ,  Charles A. Parente

IPC: G10K11/16 ,  G10K11/172 ,  B23K26/00

CPC classification number: G10K11/161 ,  G10K11/172 ,  Y10T428/24273 ,  Y10T428/268

Abstract: A microporous sheet having both acoustical and structural functionality and a process for producing the sheet. Construction of the sheet requires, first of all, providing a sheet capable of functioning as a structural element of a component. A laser device capable of producing a free electron laser beam is provided, and the free electron laser beam is directed to a surface of the sheet to penetrate the sheet at a plurality of sites and thereby form a plurality of apertures. These apertures are generally uniformly dispersed and of a size and number sufficient to enable the sheet to function as an acoustical noise suppressor while retaining capability of functioning as a structural element. Use of free electron laser technology permits formation of smooth-walled, circular or non-circular apertures tailored to exact geometry specifications controlled to a nanometer in size, and produces a microporous sheet having structural functionality while meeting acoustic requirements with clean, unclogged apertures and with low friction-to-surface and/or boundary-layer control airflow.

Abstract translation: 具有声学和结构功能的微孔片材和制造片材的方法。 片材的结构首先需要提供能够作为组分的结构元件的片材。 提供能够产生自由电子激光束的激光装置，并且将自由电子激光束引导到片材的表面以在多个位置处穿透片材，从而形成多个孔。 这些孔通常是均匀分散的，并且其尺寸和数量足以使得片材能够用作声学噪声抑制器，同时保持作为结构元件的功能。 使用自由电子激光技术允许形成平滑壁，圆形或非圆形孔径，适合尺寸控制到纳米尺寸的精确几何规格，并产生具有结构功能的微孔片材，同时满足具有干净，未被堵塞的孔口的声学要求，并且 低摩擦到表面和/或边界层控制气流。

公开(公告)号：US5919029A

公开(公告)日：1999-07-06

申请号：US751544

申请日：1996-11-15

Applicant: William C. Van Nostrand ,  Charles A. Parente ,  Noe Arcas

Inventor： William C. Van Nostrand ,  Charles A. Parente ,  Noe Arcas

IPC: G10K11/178 ,  F01D25/04

CPC classification number: G10K11/1788 ,  F05B2260/962 ,  G10K2210/103 ,  G10K2210/107 ,  G10K2210/1281 ,  G10K2210/3025 ,  G10K2210/3216 ,  G10K2210/3224 ,  G10K2210/32291

Abstract: The present invention is embodied in an aircraft engine noise absorption system having a resonator cavity for absorbing incident noise except for a residue noise signal having a predominant frequency, the system comprising an actuator providing an actuator acoustic signal, a noise sensor for sensing the predominant frequency, and a controller for setting the actuator acoustic signal to the predominant frequency and varying one of a phase and an amplitude of the actuator acoustic signal to decrease the residue noise signal.

Abstract translation: 本发明体现在具有用于吸收入射噪声的谐振腔的飞机发动机噪声吸收系统，除了具有主要频率的残留噪声信号，该系统包括提供致动器声信号的致动器，用于感测主要频率的噪声传感器 以及用于将致动器声信号设置为主频并且改变致动器声信号的相位和幅度中的一个以减小残余噪声信号的控制器。

公开(公告)号：US5175401A

公开(公告)日：1992-12-29

申请号：US670917

申请日：1991-03-18

Applicant: Noe Arcas ,  Charles A. Parente

Inventor： Noe Arcas ,  Charles A. Parente

IPC: G10K11/172

CPC classification number: G10K11/172 ,  Y10T428/24149

Abstract: An acoustic attenuating liner has a non-metallic honeycomb core bonded on a backsheet. A corrosion-insulated perforated sheet is bonded to the honeycomb core by adhesive between the perforated sheet and the core. The mesh is woven to a plurality of different determined weave patterns from material on and affixed to the perforated sheet, whereby the mesh has a plurality of different resistances. The mesh is aligned with the perforated sheet and is bonded to the perforated sheet by additional adhesive between the mesh and the perforated sheet, thereby providing a segmented liner with a plurality of facesheet resistances.

Abstract translation: 声衰减衬垫具有粘合在底片上的非金属蜂窝芯。 通过多孔板和芯之间的粘合剂将防腐绝缘的多孔板粘合到蜂窝芯上。 网格由多个不同的确定的编织图案编织到多孔板上并固定到多孔板上，由此网格具有多个不同的电阻。 网孔与穿孔片材对准，并通过网孔和穿孔片材之间的附加粘合剂粘合到穿孔片材上，从而提供具有多个面片电阻的分段衬垫。

公开(公告)号：US5934611A

公开(公告)日：1999-08-10

申请号：US954553

申请日：1997-10-20

Applicant: Runyon H. Tindell ,  Charles A. Parente

Inventor： Runyon H. Tindell ,  Charles A. Parente

IPC: B64C21/02 ,  B64C21/08 ,  B64D29/02 ,  B64D33/02

CPC classification number: B64C21/08 ,  B64C21/025 ,  B64C2230/06 ,  B64C2230/14 ,  B64C2230/20 ,  B64D2033/0226 ,  Y02T50/166

Abstract: An air intake system disposable in an air vehicle turbo engine housing disposed in an exterior airflow for selectively reducing external engine boundary layer separation drag and external engine friction drag on the engine housing comprising an air inlet member for receiving engine intake air disposable within the engine housing. The air intake system further comprising a first air exit port disposed in fluid communication with the air inlet member, adapted to direct intake air from the air inlet member and to direct intake air substantially in the direction of exterior airflow, to reduce external engine boundary layer separation drag. The air intake system further comprising a second air exit port disposed in fluid communication with the air inlet member, adapted to direct intake air from the air inlet member and to direct intake air substantially in a direction perpendicular to the exterior airflow, to reduce external engine friction drag. The air intake system further comprising a control device for regulating intake airflow through the first and second air exit ports in response to sensed external engine conditions to mitigate at least one of external engine boundary layer separation drag and external engine friction drag.

Abstract translation: 一种在空气车辆涡轮发动机壳体中可弃置的进气系统，其设置在外部气流中，用于选择性地减少发动机壳体上的外部发动机边界层分离拖曳和外部发动机摩擦阻力，包括用于接收在发动机壳体内一次性的发动机进气 。 进气系统还包括设置成与空气入口构件流体连通的第一空气出口，适于引导来自空气入口构件的进气并且基本上沿外部空气流的方向引导进气，以减少外部发动机边界层 分离拖 所述进气系统还包括设置成与所述空气入口构件流体连通的第二空气出口，适于引导来自所述空气入口构件的进气并且基本上沿垂直于所述外部气流的方向引导进气，以减少外部发动机 摩擦阻力。 进气系统还包括控制装置，用于响应于感测到的外部发动机状况来调节通过第一和第二空气出口的进气气流，以减轻外部发动机边界层分离拖曳和外部发动机摩擦阻力中的至少一个。

公开(公告)号：US5581054A

公开(公告)日：1996-12-03

申请号：US443984

申请日：1995-05-18

Applicant: Robert E. Anderson ,  Charles A. Parente

Inventor： Robert E. Anderson ,  Charles A. Parente

IPC: F02C7/00 ,  F02C7/04 ,  F02C7/045 ,  F02K1/82 ,  F02K1/00

CPC classification number: B64D33/02 ,  F02C7/04 ,  F02C7/045 ,  F02K1/827 ,  B64D2033/0206 ,  F05D2260/96 ,  Y02T50/672 ,  Y10T29/49231 ,  Y10T29/49885

Abstract: An acoustic liner jet engine inlet barrel is formed from a perforated permeable skin, a honeycomb core, and a solid facesheet, each of which is formed in a one-piece configuration such that at most only a narrow single fore-to-aft splice, or no splice at all, is present in the finished product. The acoustic modal content remains unaffected, thus preserving a high degree of liner effectiveness, increasing the total active acoustic area of the barrel while decreasing its weight, and increasing its durability.

Abstract translation: 声衬衬喷射发动机入口筒由穿孔的可渗透的皮肤，蜂窝芯和实心面板形成，每个面都以单件构造形成，使得至多只有窄的单个前后接头， 或完全没有接头存在于成品中。 声学模态含量保持不受影响，从而保持高度的衬垫效率，增加了筒的总有效声学面积同时减小了其重量，并提高了其耐久性。