Title:
【発明の名称】ジェット・エンジンの騒音抑制システム
Document Type and Number:
Japanese Patent JP2000500211
Kind Code:
A
Abstract:
A noise suppression system for a jet engine, the system having a substrate formed of open cell material, a layer of microporous material covering at least a portion of one surface of the substrate, a layer of substantially non-porous material covering at least one portion of an opposite surface of the substrate, and a pressurized air source for providing pressurized air to the substrate. The substrate, the microporous material, and the non-porous material are configured to define an inner surface of an inlet for the jet engine. The pressurized air is communicated from the substrate, through the microporous material, and into the inlet so as to provide a layer of less turbulent airflow along the inner surface of the inlet, thus mitigating noise generation.
Inventors:
Parente, Charles A.
Application Number:
JP51267498A
Publication Date:
January 11, 2000
Filing Date:
August 12, 1997
Export Citation:
Assignee:
Northrop Grumman Corporation
International Classes:
B64C1/40; B64C21/02; B64C21/04; B64C21/06; B64D33/02; B64D33/04; F02C7/045; F02K1/00; F02K1/34; F02K1/82; (IPC1-7): F02K1/34; B64D33/02
Attorney, Agent or Firm:
Hironobu Onda