Max,
I owes you an apology. I forwarded the .ppt file to my works address, since i don't have powerpoint, but was so engrossed in the problem i am investigating i totally forgot. Dumb engineers, eh!
Can you send a jpeg or similar?
"Most current types (turbine helis) use the free shaft variety."
Of course - i'm thinking direct shaft
. I even have a nice sample of an A250 spool up with rotor turbine in tow as my computer startup, so should have realised.
"I hope my explanations helped at least someone and I didn't teach everyone stuff they already knew."
Nice write-up, Max. Don't mind relearning stuff in context, since it helps me make connections about design techniques. Now i realise we are primarily talking free power turbines i'm right with you.
When piston helis get below the power curve, are we talking naturally aspirated or turbo? I can see problems with torque converters, EGR, and turbos (in fact frequently do
), but don't see why (say) an R22 would suffer lag - seemed quick enough for my poor piloting anyhow
.
Mart
[Edit: spialeeng]