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Forum: Rotorheads

14th Jun 2004, 15:31

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

pprune fan #1 and helmetfire, You can see...

pprune fan #1 and helmetfire,

You can see the natural behavior of the rotor even on a stabilized helo if you wantch the sas actuator behavior on the little window most systems have. Select the...

Forum: Rotorheads

14th Jun 2004, 02:46

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

PPRUNE Fan #1, The ball goes out in level...

PPRUNE Fan #1,

The ball goes out in level flight because of the Centrifugal force in the skidding turn, and the lack of a bank to make that force point downward relative to the helicopter. Sorry!...

Forum: Rotorheads

13th Jun 2004, 16:25

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

Silberfuchs, Thanks! If you are really at...

Silberfuchs,
Thanks!

If you are really at China Beach, tell that red headed nurse that I said hello!!

Forum: Rotorheads

13th Jun 2004, 15:43

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

PPRUNE Fan, Don't get hung up on the word...

PPRUNE Fan,

Don't get hung up on the word trim. That word to me means the place where the stick is put to make the helo stay right where you want it. If you are flying at 80 knots, the cyclic is...

Forum: Rotorheads

12th Jun 2004, 18:47

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

Pprunefan, Actually, we use the term...

Pprunefan,

Actually, we use the term dihedral to describe the effect (when a yaw makes a roll) and can be measured on airplanes, helicopters and even ships! the paper describes wings but the...

Forum: Rotorheads

12th Jun 2004, 14:53

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

Phoinix, I wasn't clear enough. It counteracts...

Phoinix, I wasn't clear enough. It counteracts the roll left with right pedal, which is unstable, and not allowed for IFR flight. It does reduce yaw stability, but my guess is there is lots of yaw...

Forum: Rotorheads

12th Jun 2004, 14:09

Replies: 205

Bell 212

Views: 68,527

Posted By NickLappos

Yes, that fin would destabilize yaw somewhat, but...

Yes, that fin would destabilize yaw somewhat, but most helos have lots of yaw stability (because the tail rotor behaves like a piece of fin. It produces thrust when yawed that restores the trim. In...

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