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Old August 25th 06, 07:03 AM posted to rec.aviation.rotorcraft
Shiver
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Posts: 129
Default R22 Tailrotor RPM

The OTHER Kevin in San Diego wrote:


Yep. When I first calculated it back in June of 2004, I literally
said, "Holy ****!" and did it again...

So, for the sake of the cook's sanity....

2652 * 0.8536 = 2263.7472 - Input RPM at the main gearbox.

2263.7472 * (3/2) = 2263.7472 * 1.5 = 3395.6208

Just for giggles, I double checked the ratios in my POH and they were
correct. I checked my notes from ground school and they also agreed
with the above calculation.

No wonder that little bugger has such an effective tailrotor.


ALERT HAS BEEN CANCELED.

The cook has gone back to the kitchen.

Folks.... Meet my new potato slicer.

The R-22 Slice-O-Matic.

It slices, it dices, it julienne shreds.

But wait - That's not all.

Buy this little gadget by midnight tonight and we will throw in the
rest of the helicopter plus the kitchen sink at no extra charge.

Your wife and kids will love it.

While daddy is bringing the main rotor up to speed the kids will just
love what the tail rotor will do to a spud.

One little arm motion will be all that's needed by your youngest child
to fling a spud through the tail rotor.

You will have the thinnest sliced potatos possible.