Originally Posted by
rudestuff
So what you're saying is - you had too much rpm?!!!
And I always thought you could never have too much of that stuff if you lose an engine....
If your ELT went off before the Low RPM horn - it just means you hit the ground with plenty of RPM - meaning YOU didn't pull enough collective.
No fear pulled the whole lot sunshine.
Perhaps I could explain it again. if the auto rpm is set too high, then when you throw the lifesaver down what happens is that negative pitch is set on the rotor blades which will give you two definite things.
1) high RPM
2) astrominically high ROD.
excess RPM repuires energy to build up. fact one.
That also contributes to high ROD because that energy has been stolen from the only energy available, good old mother gravity.
Excess high ROD is the first killer.
Unfortunately for me I could have made things a whole lot worse by going straight ahead into several very solid 35 feet high trees, absolutely no way says I who just happened to remember something that I had spied with my little eye out to the left and clear, a fence line in fact. so we arrived level and flat with no strikes on anything major. That's the way it goes.
The ONLY way to do any autorotation is to first set up your aircraft as per the manufacturers book.
in my case I had a machine delivered to me in the field, test flown by someone else who later told me, Oh yeah the auto RPM was a bit high. I guess now about two full turns on the pitch links, at least.
Sorry Lifting, I must digress on one point, decision time must be within TWO seconds after the engine goes silent, or find another job.
count it down, one hundred and one - one hundred ------ etc. my ab-initio instructor sorted me on that point, for sure.
all others cop it from there.