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View Full Version : Query: He-162 and Roll Coupled Yaw



HarryVoyager
03-04-2004, 11:16 AM
Does the He-162 in the expansion pack have roll coupled yaw?

I'm mostly curious about that, as the real aircraft was reported to have such a problem, and the low wingspan to tail ratio would indicate that that aircraft would be prone to such problems.

Harry Voyager

HarryVoyager
03-04-2004, 11:16 AM
Does the He-162 in the expansion pack have roll coupled yaw?

I'm mostly curious about that, as the real aircraft was reported to have such a problem, and the low wingspan to tail ratio would indicate that that aircraft would be prone to such problems.

Harry Voyager

Cragger
03-04-2004, 11:27 AM
Nope

http://redspar.com/redrogue/cragger_sig.png

Zyzbot
03-04-2004, 12:34 PM
Then I guess the "Dutch roll" phenomenon isn't modelled on the GO-229 either?

03-04-2004, 01:05 PM
Damn, no Danish rolls either?

Zyzbot
03-04-2004, 01:32 PM
Originally posted by Kweassa1:
Damn, no Danish rolls either?


No soup for you!

Kamikaze_Gibbon
03-04-2004, 02:56 PM
Originally posted by Kweassa1:
Damn, no Danish rolls either?

Don't know about Danish rolls but a Danish pastry would be nice ;-)

Magister__Ludi
03-04-2004, 03:18 PM
People before throwing guesses using incorrect technical notions how about posting good references about what you think it is wrong?

He-162 did not suffer from Dutch roll, Dutch roll was encountered in design stages of many of the early swept wing jet fighters, but corrected in production models.
He-162 was just laterally unstable at slow speeds, a condition almost cured with the introduction of wingtip extensions.

It's worth mentioning that E. Brown rated the overall handling of He-162 as excellent, he regarded it as a top fighter.


However Go-229 did suffer from Dutch roll.

JaBo_HH-BlackSheep
03-04-2004, 04:38 PM
can any1 explain a "Dutch roll" to me ??

what is this ?

Please stay serious.

thx

03-04-2004, 07:43 PM
Watching the included Go-229 vs. B-17 track, it's rather clear that the Go-229 does not fly like a realistic flying wing.

However, it does fly like a perfectly reasonable conventional jet plane. Can we expect the developers to invent a whole new FM just for one flying wing? Nah....

Remember, "perfect is enemy of good enough".

MandMs
03-04-2004, 07:57 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by ToP_BlackSheep:
can any1 explain a "Dutch roll" to me ??

what is this ?

Please stay serious.

thx<HR></BLOCKQUOTE>

Dutch Roll

Many swept wing aircraft suffer a dynamic instability problem known as Dutch Roll.

Dutch roll happens when the aircraft has relatively strong static lateral stability (usually due to the swept wings) and somewhat weak directional stability (relatively.) In a Dutch roll the aircraft begins to yaw due to a gust or other input. The yaw is slow damping out so the aircraft begins to roll before the yaw is stopped (due to the increased speed of the advancing wing and the increased lift due to the swept wing effect.)

By the time the yaw stops and begins to swing back toward zero slip the aircraft has developed a considerable roll rate and due to momentum plus the slip angle the aircraft continues to roll even once the nose has begun returning to the original slip angle.

Eventually the yaw overshoots the zero slip angle causing the wings to begin rolling back in the opposite direction.

http://142.26.194.131/aerodynamics1/Stability/Page5.html



I eat the red ones last.

ArgonV
03-04-2004, 09:15 PM
If that description is correct, I have done this in the ACES Go 229! http://ubbxforums.ubi.com/infopop/emoticons/icon_biggrin.gif At only low speeds mind you...

"Go Fly A Kite!"
-Jason R.
Head FS-WWI Project Leader
http://www.ww1sims.com/uploads/logo.jpg
FS-WWI Plane Pack Site (http://argonv.tripod.com/FSWWI_Page/readme.htm)

Rebel_Yell_21
03-04-2004, 09:40 PM
I spent some time in the Go 229 this afternoon, and I love that beast. It turns like the bat it resembles, and though, as someone said in another thread, it doesn't accelerate well in level flight, just a slight dive and it goes like hell.

That being said, it is waaaaay too stable, like its "fly by wire", but I understand that the current engine probably can't simulate all the real problems of early flying wings.

http://www.luftwaffepics.com/LCBW/Dor335_small.jpg