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Old 04-02-2012, 01:24 PM   #2821
chazbird
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The Piper T-tail thing came about during the height of disco music. Any coincidence? For Piper it was probably all style. There was no performance advantage evident (in the books) in their aircraft that had a T-Tail (excepting, perhaps the Cheynne III's 400LS). In fact, many people said airfield performance was reduced. When disco faded, Piper quietly went back to conventional tails. Maybe one advantage is that critters, like Moose, can't really scratch their asses on the elevator/stabilator like I often saw in Alaska.
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Old 04-02-2012, 03:44 PM   #2822
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Originally Posted by Gernick View Post
Well, if you're giving them away, I'll take five

That's gotta be the coolest thing I've seen in ages
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Old 04-02-2012, 04:02 PM   #2823
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I think they may have gotten it right. Lots of separate ideas coming together. I'm guessing it'll cost a fortune. Insuring it is gonna be a nightmare.
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Old 04-03-2012, 01:57 PM   #2824
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I don't need to see the video of the t-tail flapping, I saw it first hand on several occasions. Watch the tail on a DC9/B717 on landing sometime. They tail shake pretty good, too.
That's interesting. I haven't ever noticed a DC-9's tail shaking while watching them land. I'll have to look for that. Haven't felt anything odd from the controls either, not that I would necessarily.
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Old 04-03-2012, 07:09 PM   #2825
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Did some 9 time some time ago...they didn't flap back around then but many years later, who's to say? Maybe they are starting to, what with 60,000 hours on them. (enter ironic smiley) But in actuality, the servo tabs won't make it do that, nor would a variable incidence stabilizer - if it did you'd know it quick. I think the one case where "it flapped around" was the Alaska Airlines MD-80 (9's cousin) 261 that went into the ocean off Ventura when the stabilizer jackscrew stripped and basically jammed the stabilizer until it broke free, after which it certainly "flapped around". $5 for the video of the 9's tail flapping around on a normal landing.
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Old 04-03-2012, 07:19 PM   #2826
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Or, if you want to get picking about flapping tails:

http://www.youtube.com/watch?v=COsT6DqkTDc
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Old 04-03-2012, 07:19 PM   #2827
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The left and right elevators on the DC-9/ MD-80 are not interconnected, so you will often see the left and right elevators deflected in different directions when the airplane is on the ground, not in flight though. I have never noticed any tail shaking on the DC-9 from the cockpit or while observing them from the ground, I haven't been specifically looking for such things though, only critiquing landings .

P.S. The DC-9 is built like a tank. When they retire the last Airbus A320 and ferry it out to the desert, A DC-9 will pick up the Airbus crew and take them home

vspeed screwed with this post 04-03-2012 at 07:25 PM
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Old 04-03-2012, 08:07 PM   #2828
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Originally Posted by chazbird View Post
Or, if you want to get picking about flapping tails:

http://www.youtube.com/watch?v=COsT6DqkTDc
That will definitely not buff right out!
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Old 04-03-2012, 08:20 PM   #2829
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The old timers used to tell us stories about looking back through the sextant port on the C-141A's during low-level runs and seeing the T-tail just vibrating and flexing like crazy.

Most said they only looked once, though....
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Old 04-03-2012, 08:28 PM   #2830
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Originally Posted by chazbird View Post
Or, if you want to get picking about flapping tails:

http://www.youtube.com/watch?v=COsT6DqkTDc
Musta been a Navy flight crew.


Imagine the noise inside that aircraft when that happened.
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Old 04-03-2012, 08:35 PM   #2831
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Probably couldn't hear a thing from the ringing in their ears from smacking their heads on the yokes.
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Old 04-03-2012, 09:29 PM   #2832
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I shall never disparage the DC-9, built like the proverbial brick shit house, but without the shit. A true sporty little plane that you, the pilot, flew, rather than monitored. I thought the tab system was pretty clever, too. I hear the MD-80 is somewhat cumbersome in comparison, but that's what happens when you add 30 feet and 40,000 or so pounds.
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Old 04-04-2012, 04:34 AM   #2833
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Old 04-04-2012, 05:37 AM   #2834
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Originally Posted by chazbird View Post
I shall never disparage the DC-9, built like the proverbial brick shit house, but without the shit. A true sporty little plane that you, the pilot, flew, rather than monitored. I thought the tab system was pretty clever, too. I hear the MD-80 is somewhat cumbersome in comparison, but that's what happens when you add 30 feet and 40,000 or so pounds.

I'm Leaving the DC-9 and going off to MD-88 school soon. Everyone tells me the 88 is a nicer airplane to fly, I guess we'll see about that.

Here's a photo I saw this morning on another website. A bunch of 88's in line to go.

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Old 04-04-2012, 06:30 AM   #2835
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I suspect another good reason for T tails is keep the paint from being cooked off the front.
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