It gives me very great pleasure to introduce our lecturer this afternoon, Mr. R. A. C. BRIE. I do feel that an introduction is unnecessary as most of you will either know him personally or most certainly have heard of his doings from time to time.

Mr. BRIE has been one of the foremost exponents of rotary wing flight since 1930 during which time he has never lost an opportunity of spreading the gospel of rotary wing aircraft both by word and deed and has a number of very interesting and successful flights to his credit.

He is a Founder Member of our Association and if I had my way would have been its first Chairman. He is also a Founder Member of the American Helicopter Society and of a peculiar tribe known as the “Twirley Birds,” also of America.

It was my good fortune to work very closely with Mr. BRIE for some years before the war and there is no one better fitted to talk to us on the subject he has chosen.