NASA Tech Cuts Airframe Noise by 70% on GIII Testbed

GIII testbed with wing morphing technology

A series of NASA test flights with a Gulfstream GIII testbed last month demonstrated that airframe noise can be reduced by more than 70 percent on landing approach using non-propulsive technologies. The Acoustic Research Measurement (ARM) flights, conducted at the agency’s Armstrong Flight Research Center in California, tested technologies such as landing gear fairings and the FlexSys morphing-wing flap.

Collected and summarized from the source below by Ta Ngoc Diep:

https://www.ainonline.com/aviation-news/business-aviation/2018-06-27/nasa-tech-cuts-airframe-noise-70-giii-testbed