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Voyager Plummets (Merged)

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Old 16th Feb 2014, 20:38
  #101 (permalink)  
 
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It will become a battle over who pressed the red button last Herod.
As the stick positions are algebraically summed if somebody was holding full nose down an opposite input of full nose up would cancel the order.
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Old 16th Feb 2014, 22:10
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Nope. MAAIB have full control. I hope that they don't mess it up.
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Old 16th Feb 2014, 22:55
  #103 (permalink)  
 
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Your suicidal fellow, Herod would have to reconfigure the flight augmentation computers if he wanted to pitch down over 20 deg. Even then the other guy could cancel out his inputs. Not a great day out but far better, surely, than a simple trial of strength?
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Old 16th Feb 2014, 23:39
  #104 (permalink)  
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I hardly dare to trespass on matters so technical that they are beyond my comprehension (cue voice from the back: "So shut up !"). But, speaking as one who dates from an era when the only things which worked without pilot input were the clock and the compass, it occurs to me that:

(a) "side-stick inputs are algebraically added" - so were our twigs in former times; keeping an asymmetric Meteor 7 from plunging to perdition was often a two-man (or to be exact, a two-leg) job.

(b) " A Black Box has No Fear of Death" (and it is well not to forget it).

D.
 
Old 17th Feb 2014, 07:05
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Danny, Hal wasn't too happy with the thought of death.
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Old 17th Feb 2014, 07:19
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Well I doubt if I'll go out singing"'Daisy Maisy"
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Old 17th Feb 2014, 07:31
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Danny, the difference is that even if one pilot were very much stronger than the other, opposing inputs would cancel. The other difference is that attempting to control a "plunge to perdition" with dual inputs would likely result in wild overcontrol. So even from very first sim, this is probably the biggest airbus no-no.
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Old 17th Feb 2014, 07:36
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(b) " A Black Box has No Fear of Death"
It did in the Terminator films. A story of what happens when you let computers think for themselves and make the decisions. in the film its a Strategic Air Command - North American Aerospace Defense Command computer.
Skynet (Terminator) - Wikipedia, the free encyclopedia)

Hasta la vista, baby.

Last edited by gr4techie; 17th Feb 2014 at 07:51.
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Old 17th Feb 2014, 14:06
  #109 (permalink)  
 
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Inappropriate automation - an Air Refuelling Operator faced with a recalcitrant Mission Computer System:


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Old 17th Feb 2014, 15:40
  #110 (permalink)  
 
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aha - Dark Star - one of my favourite films - I claim my pint!
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Old 17th Feb 2014, 16:17
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I'm sure Dii, JPA or MOSS (or what ever computer system the RAF has for this week) is out to my my life a misery. I just want three things... email, leave pass and expense claim. Why can't the computer simply do that without going wibble?

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Old 17th Feb 2014, 17:25
  #112 (permalink)  
 
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Sandy Parts, not Dark Star. It's based upon Kubrick's 2001: A Space Odyssey*




* Which I first saw in 'Cinerama' some 45 years ago....
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Old 17th Feb 2014, 18:33
  #113 (permalink)  
 
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Yup! Moi aussi! Saw 2001 in Cinerama in Old Compton Street in Mayfair Dec 68 IIRC in my case.
Stayed the night in the Union Jack Club-full of tramps, sweaty hot and rubber under sheets! Unforgettable.
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Old 17th Feb 2014, 19:47
  #114 (permalink)  
 
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Haraka wrote:
Stayed the night in the Union Jack Club-full of tramps, sweaty hot and rubber under sheets! Unforgettable
I never realised you indulged in such night-time games, mate...

Meanwhile, what news of Voyager? Is it still grounded?

Did other A330MRTT users ground theirs too? If not, why not.....

Last edited by BEagle; 17th Feb 2014 at 20:08.
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Old 17th Feb 2014, 20:01
  #115 (permalink)  
 
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More importantly... is the TriStar Hangar Party still scheduled for the 27th of March?
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Old 18th Feb 2014, 02:14
  #116 (permalink)  
 
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Cause unknown

Stopstart:

I have not, however, had the pleasure of seeing my aircraft transition from steady state cruise in PATH or ALT to a sudden 20 degree+ nose down descent at a rate that put people on the ceiling.
I think you are rather prejudging the cause of the incident.

It could have been a minor computer glitch, exaccerbated by an incorrect humanoid input.

It could have been the overly muscular and hairy hostie dropping a box of RAF inflight magazines on the stick.

It could have been a gangly and brain-dead f/o trying to get back into his seat, and placing his size 14 boot in the wrong place.

Who knows? But to say Boeing is best on the back of this incident is hugely premature. Our Boeings were so notorious at inflight excursions, that a proposal was put forward to charge the pax for 'fairground entertainment'. A quid for each zero-g bunt. We could have made a fortune....


Silver
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Old 18th Feb 2014, 03:11
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If it were any of those they wouldn't have grounded the whole fleet.
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Old 18th Feb 2014, 03:32
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There was nothing very much wrong with the 'hairy string and coathangers' autopilots/control linkages on proper multi-engine aircraft.
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Old 18th Feb 2014, 05:49
  #119 (permalink)  
 
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Quote TCF:
"More importantly... is the TriStar Hangar Party still scheduled for the 27th of March?"

Who can tell? Anything remotely positive about FSTA is given top billing and glossy PR. But TriStar, "nah... too cheap, paid for decades ago, no money to make in it, no promotion in it, no retirement cushy job for senior officer's in it, for Gods sake talk it down-we have wasted all these Billions on FSTA".

Despite the D notice on anything to do with this, you can be sure that everyone working on or with 216 is pulling out all the stops and, without all the restrictive practices of the FSTA project!

OAP
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Old 18th Feb 2014, 07:46
  #120 (permalink)  
 
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OAP, remind me how much time, money and effort was wasted on:
  • The failed project to include wing AAR pods on the TriStar.
  • The ZD949 'glass cockpit' fiasco.

If both projects had been completed on time and on budget and if a modern AAR mission planning/management system had been included, the TriStar would have probably had a better chance of remaining in service. It would have been an extremely capable tanker, with considerable AT capability.

But who knows what will be the knock-on effect of the Voyager having been grounded?
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