The field of flow through a helicopter rotor obtained from wind tunnel smoke tests
By: J. Meijer Drees and W. P. Hendal.
Contributors: Hendal, W. P.; National Aeronautical Research Institute (Netherlands)
Series: National Aeronautical Research Institute. Report -- A. 1205
Publisher: National Aeronautical Research Institute
Published: 1950
Place of publication: Amsterdam
Number of pages: 20
Notes: Bibliographical references: p. 19.