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#11
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In article ,
"John Carrier" writes: Dutch roll is an unavoidable dynamic response, not a desirable maneuver. It's no more useful than the phugoid. And no more intentional. You've never seen Dutch roll til you've seen it at high Mach. Quite disconcerting @ 1.75 (at this speed, we're supposed to be going straight, eh?). On the subject of instability, what was the aerodynamic cause of the X-2's departure and crash? Adverse yaw + minimal directional stability? That, and a bit of Roll Coupling, as well. -- Pete Stickney A strong conviction that something must be done is the parent of many bad measures. -- Daniel Webster |
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Mary Shafer wrote in
: On Fri, 14 May 2004 17:21:39 +0100, "Jim Doyle" wrote: I've been thinking about this, and although I'm far from being an authority on air combat, I can't see dutch rolls being a beneficial combat manoeuvre in the slightest. Even though the aircraft is oscillating in yaw and pitch the track heading remains the same, so surely it's straight forward to get shots on target? Dutch roll is an unavoidable dynamic response, not a desirable maneuver. It's no more useful than the phugoid. And no more intentional. Specifically its a coupled roll-yaw phenomemnon supposedly getting its name from the motion attributed to Dutch sailing vessels ( the design of which was influenced by the shallow coastal waters in which they often operated ) of yore. Not sure I believe this but its the conventional explanation. I believe early 747 models had a small problem with this making passengers in the aft rows ill. IBM __________________________________________________ _____________________________ Posted Via Uncensored-News.Com - Accounts Starting At $6.95 - http://www.uncensored-news.com The Worlds Uncensored News Source |
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