Soderman, Paul R <br/><br/>
Acoustic performance of two 1.83-meter-diameter fans designed for a wind-tunnel drive system /  by ... and V. Robert Page 

 - Moffett Field, Calif. :  Ames Research Center and Ames Directorate, United States Army Air Mobility R & D Laboratory,  1977 
 - 73 p 
 - United States. National Aeronautics and Space Administration. NASA technical paper ;  no. 1008 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fans (Machinery)--Noise<br/>Ducted fans<br/>Aerodynamic noise
<br/><br/><label>LC Class. No.: </label>TL789.8 U6 U57 no. 1008