- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Experimental results are presented for static acoustic model tests of various geometrical configurations of coaxial nozzles operating over a range of flow conditions. The geometrical configurations consisted of nozzles with coplanar and non-coplanar exit planes and various exhaust area ratios. Primary and secondary nozzle flows were varied independently over a range of nozzle pressure ratios from 1.4 to 3.0 and gas temperatures from 280 to 1100 K. Acoustic data are presented for the conventional mode of coaxial nozzle operation as well as for the inverted velocity profile mode. Comparisons are presented to show the effect of configuration and flow changes on the acoustic characteristics of the nozzles.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19790012658.
Accession ID: 79N20829.
Aeroacoustics Conf.; 12-14 Mar. 1979; Seattle, WA; United States.
- No Copyright.
View MARC record | catkey: 15725983