precession
Well Known Member
Tried posting this a few weeks ago, and for some reason it came out as a double post, which I tried to edit out. Trying again:
This is a question for you competition aerobatics guys. Exiting spins is one thing, and exiting spins properly in competition is another. In competition, you must (a) exit on the proper heading, and (b) draw a straight vertical down line (before recovering from the dive). The 2017 IAC Sportsman Sequence is calling for a 1 and 1/4 turn spin.
What exact sequence of controls are you using to accomplish both objectives in an RV? In particular, how far in advance of your exit heading are you applying opposite rudder, and when and how are you applying forward stick?
Currently I'm playing a guessing game in my -4 as to how much in advance of the desired exit heading to apply opposite rudder and it's not always working out. Obviously, it takes longer to stop a 2 or 3 rotation spin than a one rotation spin, and I get the impression RVs may not be as quick to respond to anti-spin inputs as pure competition aircraft, possibly due to smaller rudder size. I'm playing with using abrupt forward stick to lessen the rudder guessing game and force the aircraft to stop on the desired exit heading ... ?
Also, my -4 is still rather upright when it stops spinning, so to get a vertical down line I have to push hard into negative G. I spoke to an aerobatic competitor (non-RV guy) who said some competitors let the stick forward somewhat during the spin so they don't have to push so hard when the spin stops to get their vertical down line. Thoughts?
This is a question for you competition aerobatics guys. Exiting spins is one thing, and exiting spins properly in competition is another. In competition, you must (a) exit on the proper heading, and (b) draw a straight vertical down line (before recovering from the dive). The 2017 IAC Sportsman Sequence is calling for a 1 and 1/4 turn spin.
What exact sequence of controls are you using to accomplish both objectives in an RV? In particular, how far in advance of your exit heading are you applying opposite rudder, and when and how are you applying forward stick?
Currently I'm playing a guessing game in my -4 as to how much in advance of the desired exit heading to apply opposite rudder and it's not always working out. Obviously, it takes longer to stop a 2 or 3 rotation spin than a one rotation spin, and I get the impression RVs may not be as quick to respond to anti-spin inputs as pure competition aircraft, possibly due to smaller rudder size. I'm playing with using abrupt forward stick to lessen the rudder guessing game and force the aircraft to stop on the desired exit heading ... ?
Also, my -4 is still rather upright when it stops spinning, so to get a vertical down line I have to push hard into negative G. I spoke to an aerobatic competitor (non-RV guy) who said some competitors let the stick forward somewhat during the spin so they don't have to push so hard when the spin stops to get their vertical down line. Thoughts?
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