IT was very gratifying to see that in spile of the pressure of the times and the difficulties of travel, the Twelfth Annual Meeting of the Institute was as well attended as ever with as wide a representation as in previous years. Nor was there any lack of excellent papers, although, of course, it was perfectly clear that some of the very best development work in aerodynamics, power plant, and similar fields could not be discussed because of military restrictions. Note‐worthy was the perfectly tremendous attendance at the rotating wing aircraft session at which, after some excellent papers, films were shown of the Piasecki, Sikorsky and Bell helicopters. This session was so. crowded that the audience had to be moved to another hall where standing in the aisles could be avoided. This is another confirmation of the importance which is attached to helicopter development by American aeronautical engineers.
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