Flying Fortress, aka the Vintage Airplane Thread

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Postby BigJon@Work » Thu Aug 03, 2006 2:26 pm

The gyroscopic effect would still be there, in fact it would be worse with two propellers. It would just not be biased in one direction as it is with one propeller.
This is what I want to see racing around the pylons.
http://www.rocketracingleague.com/
I used to love it when Wide World of Sports showed the air races from Reno. They were cool!
"I am a 12 foot lizard." GCR Jan 31, 2006
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Postby analog » Thu Aug 03, 2006 5:28 pm

BigJon@Work wrote:The gyroscopic effect would still be there, in fact it would be worse with two propellers. It would just not be biased in one direction as it is with one propeller.....


Well, i had assumed their moments would be opposite and cancel out,, but my experience with gyroscopes is all from those little childhood toys. I still remember marvelling how strongly the gyro wants to turn perpendicular to whichever way you're trying to push it. That's why it'll hang horizontal and rotate about its pedestal, apparently defying gravity.
Wouldn't the reverse rotation of the second prop reverse its effect ?- say in a left turn, the clockwise prop pushing the nose up and the counterclockwise one pushing the nose down, add to zero torque from the gyroscope effect?
Cogito ergo doleo.
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Postby analog » Thu Aug 03, 2006 9:19 pm

BigJon@Work wrote:
This is what I want to see racing around the pylons.


I had no idea there were amateur rocketeers on that scale!
What a time we live in! Those things are reminiscent of the German ME163 Komet rocket planes from the end of ww2, but probably less prone to self-pyrotechnic.. Interesting site, big***, thanks.
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