Thanks for the concession.
You've now changed the other point you are making to a different point (which
happens to be true
ish) - so I presume you now understand the point about stall commencing at peek AoA (about 9'oclock) and subsequently (in
phase) reaching higher AoA's perpetuating stall around the cycle?
I think you are still wrong (now) about flapping:
but, that in itself is not enough to create the large AoA required to stall the blade. The blade must flap down due to the loss of V squared
No! if it did flap down prior to any stall developing then the attitude will change in pitch up direction - which will lead to the helicopter slowing down - if the pilot wants to go faster and make RBS he
must apply forward cyclic to negate the need for any 'flapping to equality'. So big AoA on the Retreating side is because the pilot holds the stick forward - ok?
as opposed to: Once stall commences then the blades
will flap down - pilot reaction cyclic (mostly) forward will aggravate the stall and advance the phase of onset as well as delay the phase position of recovery.... if not recovered by 6 o'clock then there'll be a Right Roll component - still it must
more significantly Pitch Up.
If the whole disc is close to stall even at low speeds due high weight (or extreme DA) then it is perfectly understandable that stall continues around the cycle beyond 6 o'clock.
[One thing which screws up these discussions and causes mis-understanding between folk here is the reference for flapping - there are at least four references - against which it could be measured - the most useful for 'us' is probably the Tip Path Plane (as opposed to the Zero Pitch Axis or the Drive Axis)]
[ and Crab I was just offended by your rudely over confident post
"Sorry fidor but that is complete horse**** and I can only assume you are trying to wind me up." I have tried to suggest to you that your over-confidence it your training and experience has not taught you to listen with an open mind to other pilots, particularly in the case of VRF, this is a
clear cut case. ]
Admit - you have now learnt something interesting (cue sarcastic dismissal
)