NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Aero-acoustic performance characteristics of duct burning turbofan exhaust nozzlesA recent experimental investigation has identified the aero/acoustic characteristics of exhaust nozzles for duct heating turbofan engines over a range of simulated flow conditions. Jet noise and performance levels are summarized for a series of coannular nozzles representing both acoustically suppressed and unsuppressed designs operating in a static environment. The basic coannular nozzles were found to provide inherent noise suppression. Multi-element suppressor nozzles provided additional noise suppression, but with appreciable thrust loss. The impact of these results on the advanced supersonic transport studies is also presented, indicating potentially large reductions in take-off gross weight or community noise footprints.
Document ID
19760038109
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kozlowski, H. (NASA Lewis Research Center Cleveland, OH, United States)
Packman, A. B. (United Technologies Corp. Pratt and Whitney Aircraft Div., East Hartford, Conn., United States)
Gutierrez, O. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
AIAA PAPER 76-148
Meeting Information
Meeting: Aerospace Sciences Meeting
Location: Washington, DC
Start Date: January 26, 1976
End Date: January 28, 1976
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
76A21075
Funding Number(s)
CONTRACT_GRANT: NAS3-17866
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.

Related Records

There are no records associated with this record.
No Preview Available