Compact muffler apparatus and associated methods

Patent · Tue Feb 24 04:00:00 EST 1987

OSTI ID:6720558

Ross, D F; Lyon, C A

This patent describes a compact muffler for attenuating gas turbine engine noise, comprising: (a) a housing having a rectangular cross-section which circumscribes an axis; (b) an exhaust duct having a rectangular cross-section and extending coaxially through the interior of the housing, the exhaust duct having four side walls, first and second ones of the side walls each having a perforated section; (c) a duality of baffle members extending between and inter-securing the housing and exhaust duct, and defining therewith first and second sound attenuating chambers each extending laterally around axial portions of at least two of the side walls. The first sound attenuating chamber communicates with the interior of the exhaust duct through a first portion of the perforated section of the first side wall. The second sound attenuating chamber communicates with the interior of the exhaust duct through a first portion of the perforated section of the second side wall. Each of the sound attenuating chambers extends axially beyond the portion of the perforated section through which it communicates with the interior of the exhaust duct.

• Assignee: Garrett Corp., Los Angeles, CA
• Patent Number(s): US 4645032
• OSTI ID: 6720558
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
BAFFLES
CONTROL EQUIPMENT
DESIGN
DUCTS
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
NOISE POLLUTION ABATEMENT
POLLUTION ABATEMENT
POSITIONING
STEAM MUFFLERS
WALLS