Repair method for noise suppression structure

Inactive Publication Date: 2006-03-23
HONEYWELL INT INC
View PDF13 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the turbine engines, as well as other components that make up the engine, can be sources of unwanted noise, especially during aircraft take-off and landing operations.
Moreover, APUs and ECSs can be sources of unwanted ramp noise.
Periodically, these noise suppression panels may become damaged from normal wear.
However, neither cured resins nor clay have acoustic damping properties, and thus,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Repair method for noise suppression structure
  • Repair method for noise suppression structure
  • Repair method for noise suppression structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Before proceeding with the detailed description, it is to be appreciated that the described embodiment is not limited to use in conjunction with a particular type of engine, or in a particular type of vehicle. Thus, although the present embodiment is, for convenience of explanation, described as being implemented in an aircraft environment, it will be appreciated that it can be implemented in various other types of vehicles, and in various other systems and environments.

[0024] Turning now to the description, and with reference first to FIG. 1, an exemplary noise suppression panel 100 is depicted in perspective and cross section, respectively. In FIG. 1, the panel 100 includes a back plate 102, a face plate 104, and a bulk absorber 106. The back plate 102 is preferably imperforate and is constructed of any one of numerous types of non-porous materials such as, for example, aluminum, epoxy, or bismaleimide (BMI). As will be described more fully below, the back plate 102 is pre...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Fractionaaaaaaaaaa
Temperatureaaaaaaaaaa
Areaaaaaaaaaaa
Login to view more

Abstract

A method is provided for repairing a defect in a noise suppression panel. The method may be used to repair defects in a panel that may occur during the manufacture of or normal use of the panel. The method includes the steps of removing the defect from the noise suppression panel to create a cavity therein, forming material comprised of a material having acoustic damping properties into an insert configured to mate with the cavity, and placing the insert into the cavity.

Description

FIELD OF THE INVENTION [0001] The present invention relates to noise suppression structures and, more particularly, to noise suppression structures for aircraft ducts and plenums, and methods of repairing the structures. BACKGROUND OF THE INVENTION [0002] Many aircraft are powered by jet engines. In most instances, jet engines include one or more gas-powered turbine engines, auxiliary power units (APUs), and / or environmental control systems (ECSs), which can generate both thrust to propel the aircraft and electrical energy to power systems installed in the aircraft. Although most aircraft engines are generally safe, reliable, and efficient, the engines do exhibit certain drawbacks. For example, the turbine engines, as well as other components that make up the engine, can be sources of unwanted noise, especially during aircraft take-off and landing operations. Moreover, APUs and ECSs can be sources of unwanted ramp noise. Thus, various governmental rules and regulations aimed at miti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02D37/00
CPCB29C73/06B29C73/26F01D5/005F05D2230/80Y02T50/672F05D2220/50F05D2260/96F02C7/045E04G23/0207Y02T50/60
Inventor STEVENSON, JAMES F.WILLIAMSON, ROGER B.VINTILESCU, ION VIRGILCHUNG, VINCENT
Owner HONEYWELL INT INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap