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9/23/2020 3:47:02 PM
Posted: 5/2/2011 7:07:24 AM EDT
[Last Edit: 5/2/2011 7:07:57 AM EDT by DzlBenz]
Video 1/3. Tu-154 Take-off:




Video 2/3. I started dry-heaving at about 0:58:

Video 3/3. Chunks blown. I don't even know what's keeping this hunk of shit together.






 
Link Posted: 5/2/2011 7:13:40 AM EDT
Big cross winds or amature pilots?
Link Posted: 5/2/2011 7:14:44 AM EDT
Dupe


But yea fuckthatshit.
Link Posted: 5/2/2011 7:15:16 AM EDT
Link Posted: 5/2/2011 7:15:34 AM EDT



Originally Posted By DirectionalDriller:


Big cross winds or amature pilots?


I'd guess a pretty monumental flight control system fuck-up. The plane looked to be in a cross-coupled mode. Crazy Ivans, maybe!



 
Link Posted: 5/2/2011 7:15:48 AM EDT
Looks like testing.
Link Posted: 5/2/2011 7:15:53 AM EDT



Originally Posted By ckichinko:


Dupe





But yea fuckthatshit.


Fuck me.



 
Link Posted: 5/2/2011 7:17:16 AM EDT
It appears to have a severe aft CG problem. Damned lucky to get it back on the ground.
I guess nobody checked weight and balance before takeoff.
Link Posted: 5/2/2011 7:18:17 AM EDT
Link Posted: 5/2/2011 7:19:18 AM EDT
Yuri, I keepz mashing on these two pedals on zee floor and we still don't slow down any.    What's wrong with this pile of sheeet?
Link Posted: 5/2/2011 7:20:00 AM EDT
WTF is going on there?

Control surface malfunctions?

Why is the landing gear still down?

Link Posted: 5/2/2011 7:21:41 AM EDT
I'm going to with with some kind of test. I'm betting there's no one on that plane but a pilot.  Why do you think the guy is filming?
Link Posted: 5/2/2011 7:22:40 AM EDT
Link Posted: 5/2/2011 7:23:05 AM EDT
"May Day Paradeski!  May Day Paradeski!"




Link Posted: 5/2/2011 7:29:00 AM EDT



Originally Posted By CFII:


PIO


Probably to start, but if you let the controls go to neutral position, won't the plane fly out of it?



 
Link Posted: 5/2/2011 7:35:34 AM EDT
Link Posted: 5/2/2011 7:37:09 AM EDT



Originally Posted By CFII:



Oh it should. I think he was doing it on purpose.


Maybe it was a rotary-wing guy trying to use the flap lever as a collective pitch control.



 
Link Posted: 5/2/2011 7:37:37 AM EDT
Originally Posted By DzlBenz:

Originally Posted By CFII:
PIO

Probably to start, but if you let the controls go to neutral position, won't the plane fly out of it?
 


PILOT INDUCED oscillations. Means he was doing it on purpose.
Link Posted: 5/2/2011 7:40:02 AM EDT
Link Posted: 5/2/2011 7:41:41 AM EDT



Originally Posted By ttam281:



PILOT INDUCED oscillations. Means he was doing it on purpose.
Induced != intentional. Most PIO is not intentional. It's sloppy control.





 
Link Posted: 5/2/2011 7:49:00 AM EDT
Originally Posted By schizrade:
Looks like testing.



This.

Or some Russian pilot said 'comrade, get your video camera and watch this'.
Link Posted: 5/2/2011 8:09:56 AM EDT
Originally Posted By DzlBenz:

Originally Posted By CFII:
PIO

Probably to start, but if you let the controls go to neutral position, won't the plane fly out of it?
 


Not necessarily with swept wing aircraft. Dutch roll...



and



As wing b is less swept in relation to the airflow, it produces more lift and creates a rolling moment since the lift is asymetric.  As it reaches its critical AoA, the lift dissapates, the wing drops, and the other wing becomes less swept, and the process occurs in reverse.  Slight more complicated than that, but thats the process in a nutshell.

A yaw damper uses a sensor and rudder to compensate and dampen these occelations.  They are more pronounced at altitude, and thus high altitude flight in swept wing aircraft requires a yaw damp.

According to wiki, the Tu-154 doesn't have a yaw damp, using the reverse dihidreal effect of airfoil.

Quite a Russian solution to attempt to bypass the necessity of  YD in highly swept wing airplanes.

Link Posted: 5/2/2011 8:12:32 AM EDT



Originally Posted By Screechjet1:



Science 'n' shit...



Wow! Thanks!



 
Link Posted: 5/2/2011 8:17:49 AM EDT
I will cut and paste from other thread!

Originally Posted By Toiyabe:
The absolute worst flight of my life was on one of those.

I've been on them more than once, and quite a few have had real phugoid cycle issues.


Link Posted: 5/2/2011 8:23:46 AM EDT



Originally Posted By thebeekeeper1:



Originally Posted By DnPRK:

It appears to have a severe aft CG problem. Damned lucky to get it back on the ground.  I guess nobody checked weight and balance before takeoff.




Don't they always get back on the ground?  













 
Link Posted: 5/2/2011 8:24:00 AM EDT
Originally Posted By DzlBenz:

Originally Posted By Screechjet1:

Science 'n' shit...

Wow! Thanks!
 


Nice to know that $60k and 8 years of my life has some residual value to anyone.

Think of it as an intellectual garage sale.
Link Posted: 5/2/2011 8:24:37 AM EDT
Originally Posted By Screechjet1:
Originally Posted By DzlBenz:

Originally Posted By CFII:
PIO

Probably to start, but if you let the controls go to neutral position, won't the plane fly out of it?
 


Not necessarily with swept wing aircraft. Dutch roll...

http://upload.wikimedia.org/wikipedia/commons/b/b2/DutchRollAnimGIF02.gif

and

http://upload.wikimedia.org/wikipedia/commons/thumb/0/0d/DutchRoll_03b.svg/533px-DutchRoll_03b.svg.png

As wing b is less swept in relation to the airflow, it produces more lift and creates a rolling moment since the lift is asymetric.  As it reaches its critical AoA, the lift dissapates, the wing drops, and the other wing becomes less swept, and the process occurs in reverse.  Slight more complicated than that, but thats the process in a nutshell.

A yaw damper uses a sensor and rudder to compensate and dampen these occelations.  They are more pronounced at altitude, and thus high altitude flight in swept wing aircraft requires a yaw damp.

According to wiki, the Tu-154 doesn't have a yaw damp, using the reverse dihidreal effect of airfoil.

Quite a Russian solution to attempt to bypass the necessity of  YD in highly swept wing airplanes.



This is why arfcom rocks!

Thank you for the explanation.
Link Posted: 5/2/2011 8:24:58 AM EDT



Originally Posted By Toiyabe:


I will cut and paste from other thread!




Originally Posted By Toiyabe:

The absolute worst flight of my life was on one of those.



I've been on them more than once, and quite a few have had real phugoid cycle issues.






Tu-154. NATO Code name: Careless. Not a coincidence.



I only ever had two flights on one, in Bulgaria. I got good and hammered before the second flight.



 
Link Posted: 5/2/2011 8:31:57 AM EDT
I always test the aircraft that way. The rear end for stress fractures.



Also, in Soviet Russia, plane fly YOU!
Link Posted: 5/2/2011 8:33:43 AM EDT
[Last Edit: 5/2/2011 8:36:59 AM EDT by Toiyabe]
Originally Posted By DzlBenz:

Originally Posted By Toiyabe:
I will cut and paste from other thread!

Originally Posted By Toiyabe:
The absolute worst flight of my life was on one of those.

I've been on them more than once, and quite a few have had real phugoid cycle issues.



Tu-154. NATO Code name: Careless. Not a coincidence.

I only ever had two flights on one, in Bulgaria. I got good and hammered before the second flight.
 


VKO to LYR in November.

Edit:
Also VKO to PKC.
Link Posted: 5/2/2011 8:36:12 AM EDT
Meh He walked away. Good landing.

Silly Amerikanskis always wanting smooth flight.  

In Russia flight smooths you (all over the walls and the floor and the ceiling)
Link Posted: 5/2/2011 8:39:38 AM EDT



Originally Posted By Toiyabe:



VKO to LYR in November.



Edit:

Also VKO to PKC.






Isn't that like the northern-most airport in the world? Crikey!



 
Link Posted: 5/2/2011 8:40:37 AM EDT
Originally Posted By DzlBenz:

Originally Posted By Toiyabe:

VKO to LYR in November.

Edit:
Also VKO to PKC.



Isn't that like the northern-most airport in the world? Crikey!
 


Something like that.
And a few years previously one had crashed on that run.
Ah, vodka...
Link Posted: 5/2/2011 8:49:50 AM EDT
Vodka Service starts at the front of the plane..

( and they have priority on refills. )

Link Posted: 5/2/2011 8:54:36 AM EDT
Igor, hold my wodka and watch this!!
Link Posted: 5/2/2011 8:59:51 AM EDT



Originally Posted By DirectionalDriller:


Big cross winds or amature DRUNK pilots?


We are talking Russians here.....



 
Link Posted: 5/2/2011 9:19:15 AM EDT
You can see an engine backfire out of the left side in one of the first videos.
Link Posted: 5/2/2011 9:20:19 AM EDT
You can see an engine backfire out of the left side in the first video at the 28 second mark.
Link Posted: 5/2/2011 9:24:26 AM EDT



Originally Posted By DzlBenz:





Originally Posted By Toiyabe:

I will cut and paste from other thread!




Originally Posted By Toiyabe:

The absolute worst flight of my life was on one of those.



I've been on them more than once, and quite a few have had real phugoid cycle issues.






Tu-154. NATO Code name: Careless. Not a coincidence.



I only ever had two flights on one, in Bulgaria. I got good and hammered before the second flight.

 
SVO to IKT and back is 10 hours I would rather forget.  





 
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