I was having a conversation with some colleagues recently on advance angles and someone asserted that it would be impossible to have an advance of angle of zero degrees and as such asserted that there were no production helicopters in the world that had a zero degree advance angle (or no advance angle to be semantically correct
). I (possibly in my youthful ignorance) can see no reason why this setup is mechanically impossible as long as the relevant control design ensures that forward cyclic translates to forward disc movement. I can understand that it may not be a very efficient way of doing things but is it true that no helicopters have ever used this arrangement??
Enlightening comments very welcome!
P.S. From looking at the Robbo head, it looks like its advance angle is somewhere between 70 and 80 degrees (rough guess). Anyone know the exact figure? Thanks!
Irlandés