Text of the author's lecture at a meeting of the Royal Aeronautical Society, October 14, 1937.
Cover title.
"Reprinted from the Journal of the Royal Aeronautical Society, February, 1938."
Includes reprints of 2 other articles: "Gyroplane and autogiro" by J.A.J. Bennett, published in the periodical Aircraft Engineer, October 28, 1937, and "Hafner and Cierva gyroplanes" by Raoul Hafner, published in the periodical Flight, November 11, 1937.
NASM copy 39088016283392 gift of Dr. Bruce Charnov.
Contents:
The Hafner gyroplane / by Raoul Hafner -- Gyroplane and autogiro : some comments on Herr Hafner's paper / by Dr. J.A.J. Bennett, A.F.R.Ae.S. -- Hafner and Cierva gyroplanes : a reply to Dr. J.A.J. Bennett, A.F.R.Ae.S. / by Raoul Hafner
