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Spinning an Airliner

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Spinning an Airliner

Old 04-11-2011, 05:59 PM
  #41  
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If the simulator is an accurate duplication of the airplane you can definitley roll an A-320 with flight controls in normal law. Remember the rudder is connected controlled directly with cables and hydraulics. The way I've done it is to load up the nose and pump full rudder in the sim she rolls right around and pretty snappy to.

In the real airplane you'd most likely shed the vertical stab as historically Airbus tails seem to be attached with Elmer's glue and balsa wood.

Once again and in the simulator only I had a lady put a B-777 into a fully developed tail slide and then a violent spin that led to a simulated smoking hole one night on a nose high unusual attitude recovery! I gave her the nose high and instead of doing the briefed and SOP for recovery she freaked jammed in full power and held the nose up to almost a vertical profile. The sim hung there for a bit then fell into a tail slide when it did she pumped in full rudder and the sim snapped over on it's back and entered the prettiest inverted spin you've ever seen. I let it go just to see what would happen, we did about three or four turns losing about 10,000 feet before hitting the simulated ground and there was nothing that worked for a recovery.

Once again I don't have any idea how accurate the simulation was. But it was a pretty cool ride knowing, obviously that you were in a sim and weren't really going to get killed at the bottom.

Navy trained pilot too, in case you were wondering.
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Old 04-12-2011, 09:18 AM
  #42  
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You can spin one on the ground, if you have an Air France A380 that is..
TODAY Video Player
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Old 04-13-2011, 11:53 AM
  #43  
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Originally Posted by Airhoss View Post
If the simulator is an accurate duplication of the airplane...
This is a fascinating topic. I do not think sims are very good at predicting fully developed spins for a number of reasons-

1. They do not need to model it because few transport aircraft are certified for spins to begin with (none).
2. The cost of certifying the sim for spin dynamics would be significant.
3. Spin dynamics are very difficult to model, and even normal flight behaviors are tweaked using test pilots. How many of these pilots do you think are available to offer their opinion on how a given airliner behaves in a spin?

On the other hand, it is certainly possible to put some first-order spin dynamics into the sim for the sake of completeness. How accurate it is would be questionable. I also would not take very seriously any structural failures the sim claims in the spin, it can't make accurate analysis of stress in a flight regime that is largely guesswork and in this case is not even modeled to second order. It may be able to decide whether a wing is going to fall off in the recovery since that is similar to other actions, but the rest is not going to be very accurate past the entry phase of the spin.
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Old 04-16-2011, 07:44 PM
  #44  
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Fred
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Old 04-16-2011, 08:27 PM
  #45  
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Originally Posted by DYNASTY HVY View Post






Fred
Thanks for sharing, that was great!
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Old 04-16-2011, 08:57 PM
  #46  
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Very Cool, but concorde has more common lineage with a supersonic bomber than a typical airliner.
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Old 04-16-2011, 09:59 PM
  #47  
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Originally Posted by rickair7777 View Post
Very Cool, but concorde has more common lineage with a supersonic bomber than a typical airliner.
rick.

There isn't an airliner flying that couldn't do a properly executed 1G barrel roll. That's the whole point of a barrel roll it creates no undue stress on the airframe it is a 1 G maneuver.

Refer to post # 23 and listen to what Tex has to say about doing a barrel roll.
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Old 04-16-2011, 10:08 PM
  #48  
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Originally Posted by Airhoss View Post
rick.

There isn't an airliner flying that couldn't do a properly executed 1G barrel roll. That's the whole point of a barrel roll it creates no undue stress on the airframe it is a 1 G maneuver.
Kinda what I thought.

Yep, the Concorde pegs the cool factor meter as far as civilian aircraft go. But boasting about barrel rolling it isn't really saying much, based on your point above.
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Old 04-16-2011, 10:19 PM
  #49  
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But boasting about barrel rolling it isn't really saying much, based on your point above.
Exactly. I know of more than one airliner/freighter that have been rolled on deadhead legs in the days before FOQA it wasn't all that uncommon. I've been told that 320 KIAS and 18 deg ANU makes for the proper entry profile to do a beautiful 1G aileron roll in a 727.
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Old 04-16-2011, 11:09 PM
  #50  
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Default A C-160 Transall barrel roll

Not quite an airliner, but quite a roll!
YouTube - Transall C 160 Roll
This is said to be a French transport over Africa.
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