AEDC engineers assist with SBIR effort researching noise reduction of aircraft engines
                In order to non-invasively measure the unsteady, 3D velocity field of a jet plume from a stationary aircraft engine, Nov. 18, 2021, a laser beam is redirected and spread into a wider plane as it crosses behind the engine at the Propulsion Research Facility operated by Arnold Engineering Development Complex on the campus of the University of Tennessee Space Institute in Tullahoma, Tenn. Cameras are then aimed at a 45-degree angle to the laser plane to observe the scattered laser light from soot particles in the exhaust and measure their velocity. (U.S. Air Force photo by Jill Pickett)
                
                    
                        PHOTO BY:
                        Jill Pickett
                    
                    
                        VIRIN:
                        211118-F-KN521-1013.JPG
                    
                    
                        FULL SIZE:
                        12.09 MB
                    
                 
                
                
                        
                        
                            
                                
                                    CAMERA 
                                    NIKON D850
                                    LENS 
                                    24.0-70.0 mm f/2.8
                                    APERTURE
                                    13
                                 
                                
                                    SHUTTERSPEED
                                    1/60
                                    ISO
                                    2000
                                 
                             
                            No camera details available.
                         
                        
                            
                                IMAGE IS PUBLIC DOMAIN
                                
                                    Read More
                                
                                
                                    This photograph is considered public domain and has been cleared for release.
                                    If you would like to republish please give the photographer appropriate credit.
                                    Further, any commercial or non-commercial use of this photograph or any other
                                    DoD image must be made in compliance with guidance found at
                                    https://www.dimoc.mil/resources/limitations,
                                    which pertains to intellectual property restrictions (e.g., copyright and
                                    trademark, including the use of official emblems, insignia, names and slogans), warnings
                                    regarding use of images of identifiable personnel, appearance of endorsement, and related matters.