Glenn Research Center - Acoustics Branch Nozzle Acoustic Test Rig

+ NASA Homepage

Search NASA Glenn

+ NASA Glenn Home
+ Directorate Home
+ Division Home
+ Acoustics Branch Home

+ About Us – Testing + Analysis + Collaboration + Education + Contact Us

Find Out More

To learn more about the capabilities of the Nozzle Acoustic Test Rig and to find out if it can be used for your test, please, contact:

James E. Bridges

Testing Facilities

NOZZLE ACOUSTICS TEST RIG

Scale model tests in the Nozzle Acoustic Test Rig were used to investigate the acoustic interaction between a pair of nozzles. Routing the engine exhaust flow through two nozzles instead of one can change the noise perceived by the airport community.

The road to flight testing

The Nozzle Acoustic Test Rig (NATR) plays a key role in evaluating jet noise reduction concepts so that only the most promising concepts are selected for full-scale engine tests. Scale models of nozzles from both military and commercial aircraft engines can be tested in the NATR, which is one of three test rigs housed in the NASA Glenn Aero-Acoustic Propulsion Lab. The NATR can simulate take-off and landing forward flight conditions up to Mach 0.3. Up to three streams of flow at a variety of pressures and temperatures can be used to evaluate advanced nozzle concepts. The NATR enables engineers to evaluate a number of nozzle noise reduction concepts at a fraction of the cost and time required for a full-scale engine test.

TESTING FACILITIES

+ Aero-Acoustic Propulsion Lab
+ Small Hot Jet Acoustic
Test Rig
– Nozzle Acoustic Test Rig
+ Advanced Noise Control
Fan Rig
+ 9’x15’ Low Speed Wind Tunnel
+ Acoustical Testing Laboratory

SPECIAL INSTRUMENTATION

+ Particle Image Velocimetry
+ Rotating Microphone Rake
+ Linear Microphone Array
+ Phased Array Microphones
+ Rayleigh Scattering
+ Hotwire, Hotfilm, and Laser Doppler Velocimetry

EXPERIMENTS

Read more about other experiments conducted in the Nozzle Acoustic Test Rig

+ The next best thing to a nozzle in flight

+ NASA Privacy Statement, Disclaimer,
and Accessibility Certification

+ Download Adobe Reader

NASA Official: E. Brian Fite
Last Updated: June 16, 2011

+ GRC Home