 |
|
 |
3.3 Fan Noise Reduction
Swept and Leaned Stator Model An engine fan noise reduction of 3 decibels was achieved with an innovative, low-noise stator design. This design has the potential to effectively eliminate fan tone noise as a significant contributor to community noise. This is a tremendous achievement in that it accomplishes what fan tone noise research over the past 30 years had not yet produced. With the new stator, engine designers can direct more attention to reducing fan broadband noise. The 3-decibel fan noise reduction was met through a combination of a low-noise fan design and cycle changes, which were validated in high-fidelity scale-model engine simulator tests in wind tunnels. The tests clearly demonstrated the achievement of the 3-decibel fan noise reduction. Engines designed to take advantage of this innovation will represent a new paradigm in engine design and will open the door for the application of additional concepts for noise reduction in engines.
NASA POC:
|
 |
|
 |
NASA Headquarters Responsible Official: Code R
Curator: SAIC Information Services http://www.aerospace.nasa.gov |
