To: Helmet Fire
“I believe you are starting to understand cyclic feathering and flapping to equality. I note that Arm out the window posted an excellent description for you above, which raised no comment from you: are we beginning to help your understanding?
Please understand that I did not have a light bulb go off over my head as a result of any of the above posting. I have been aware of cyclic feathering and pitch coupling ever since 1949 when I was first introduced to helicopter maintenance. What I did not know was the term flapping to equality.
As to my knowledge flapping to equality is not used as an explanation for the phenomenon in the United States and that is the root of the entire argument, which is how, POF is taught in different parts of the world.
[ 12 August 2001: Message edited by: Lu Zuckerman ]