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Search: Posts Made By: DozyWannabe
Showing results 1 to 35 of 84
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Forum: Tech Log
13th Aug 2011, 02:04
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

@Lyman If you are indeed another alias for...

@Lyman

If you are indeed another alias for bearfoil - which is in itself a breach of the rules on most forums, then you'll know full well that the question you've just asked was answered - several...
Forum: Tech Log
12th Aug 2011, 20:52
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Firstly, was that BCal? If so then my first ever...

Firstly, was that BCal? If so then my first ever flight would have been on one of those 1-11s.



Maybe so, but the fact is that neither of us actually *know* what exactly was said.
...
Forum: Tech Log
12th Aug 2011, 19:10
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Actually I'm pretty sure that's an...

Actually I'm pretty sure that's an oversimplification. In the early days, Airbus's sales crew did emphasise how simple the automation made flying the aircraft. But I don't think that "lower...
Forum: Tech Log
10th Aug 2011, 23:06
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

We can't tell the tone of voice in which the...

We can't tell the tone of voice in which the question was asked, because all we have is the transcription of the CVR. It may turn out that it was just a joke that the Captain was making before he...
Forum: Tech Log
10th Aug 2011, 20:19
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Right, so one of the takeaways from this incident...

Right, so one of the takeaways from this incident so far is that CRM (Crew Resource Management - plenty of material online if you need more background info) at Air France was in need of review when...
Forum: Tech Log
10th Aug 2011, 19:43
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Hi Jutta - and welcome. I dont think it's a...

Hi Jutta - and welcome.

I dont think it's a case of the PF failing to understand the computer (which in this case, outside of autotrim, wasn't actively doing anything to assist his inputs anyway)....
Forum: Tech Log
7th Aug 2011, 16:33
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

@ChristiaanJ - the A320 did in fact have Gordon...

@ChristiaanJ - the A320 did in fact have Gordon Corps.

Also, MS Flight Sim provides a rough-and-ready simulation of everything from single-engined Cessnas (where feedback comes directly from the...
Forum: Tech Log
7th Aug 2011, 16:24
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

He has pitch and power, which should be all that...

He has pitch and power, which should be all that is necessary.



I'm still not sure about the argument there - the flipside is that in the case of a small-intermediate upset he has complete...
Forum: Tech Log
7th Aug 2011, 15:58
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

The main difference is that in Normal Law, all...

The main difference is that in Normal Law, all the inputs to the FCU and FMC can be trusted - therefore it is likely that the computers will know more about the plethora of aircraft parameters at any...
Forum: Tech Log
7th Aug 2011, 15:28
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

I don't have any numbers, but the question is not...

I don't have any numbers, but the question is not so much the speed of actuation (which would be the same), but the speed with which that actuation is demanded. You can crank the manual trim wheel...
Forum: Tech Log
6th Aug 2011, 21:45
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Could we get some confirmation from PJ2 or...

Could we get some confirmation from PJ2 or A33Zab?

(@RRR - I don't know about "belief" - I'm asking for some confirmation. Either way it doesn't alter the fact that without overcontrolling, the...
Forum: Tech Log
6th Aug 2011, 19:05
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Fair enough, that's your opinion - but have you...

Fair enough, that's your opinion - but have you ever actually flown a FBW Airbus? Plenty that have state that the autotrim is completely unobtrusive when hand-flying and that the aircraft as a whole...
Forum: Tech Log
5th Aug 2011, 21:39
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Really? As far as I can see, only the...

Really? As far as I can see, only the instruments related to pitot data could be considered unreliable, that is until the point that the AoA became so extreme that various anomalies that would have...
Forum: Tech Log
4th Aug 2011, 13:05
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

I don't and can't know what he thought, because...

I don't and can't know what he thought, because he's dead. But to my mind only two things can make apparently undamaged controls fail to respond in the correct manner, and those things are:


an...
Forum: Tech Log
4th Aug 2011, 02:29
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Hi Ed, Is that because you can't see any...

Hi Ed,

Is that because you can't see any instance when it would be useful or because it goes against the methods you were taught flying aircraft with more "conventional" controls?

IMO (for what...
Forum: Tech Log
3rd Aug 2011, 23:55
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

I can't answer for sure, but I have a feeling...

I can't answer for sure, but I have a feeling that the trace in the FDR describes elevator position relative to THS position. I hope someone else will confirm/refute this, but if you compare the SS...
Forum: Tech Log
3rd Aug 2011, 23:03
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

The PF's inputs towards full nose-up begin at...

The PF's inputs towards full nose-up begin at 2:11:40 and he's back against the stops at 2:11:42. The nose-down pitch doesn't begin until 2:11:45 and reaches 10 degrees nose-down (the lowest point...
Forum: Tech Log
3rd Aug 2011, 22:13
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

You need to be zoomed right in, but you can see...

You need to be zoomed right in, but you can see movement in the THS line after an elevator movement of any size. Unfortunately, due to the low resolution of the image in the PDF it only shows as a...
Forum: Tech Log
3rd Aug 2011, 21:31
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

I'm not saying that the behaviour isn't...

I'm not saying that the behaviour isn't problematic, I'm saying that I don't think that the return of the stall warnings is unambiguously triggered by the nose-down inputs. The only source that...
Forum: Tech Log
3rd Aug 2011, 15:09
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

In this particular *situation*. I've always...

In this particular *situation*. I've always tried to give the crew and the aircraft a fair deal for as long as I've been involved in this discussion.

In this I agree with both BOAC and yourself...
Forum: Tech Log
3rd Aug 2011, 14:33
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

bearfoil: If you are talking about the THS...

bearfoil:

If you are talking about the THS jamming or breaking in the nose-up lock position, think carefully before going round the houses again - look at this (again please excuse the low...
Forum: Tech Log
3rd Aug 2011, 12:43
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Agreed. Also agreed. If the...

Agreed.



Also agreed. If the "Assiette" trace is reliable, the lowest the nose-down pitch ever got was approx -10 degrees (2:11:55, 32,000ft), but due to a combination of the aggressive...
Forum: Tech Log
3rd Aug 2011, 12:06
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

*All* of them are from people who either do not...

*All* of them are from people who either do not understand the Airbus FBW concept, have never flown a FBW Airbus and/or have a long-standing axe to grind with Airbus.



Not so - as I said on...
Forum: Tech Log
3rd Aug 2011, 04:10
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

@takata, calm down... I gave you a link to...

@takata, calm down... I gave you a link to spagiola's post, and to Lemurian's follow-up. Lemurian added the words "of the stick" but did not alter "to the left". Don't shoot the messenger!
Forum: Tech Log
3rd Aug 2011, 02:27
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

@takata (the icons next to the...

@takata





(the icons next to the poster's name will link to the original post)

I also know Lemurian, and I don't think he'd make that kind of mistake. I think what the translation means...
Forum: Tech Log
3rd Aug 2011, 02:11
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

@takata - IIRC the translations themselves come...

@takata - IIRC the translations themselves come from Lemurian - I believe thermalsniffer merely added the requisite parts from the BEA press release in June.
Forum: Tech Log
3rd Aug 2011, 01:51
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Machinbird, It's a personal conclusion, but...

Machinbird,

It's a personal conclusion, but I think it's logical.

I've munged some of the FDR traces into a graphic here (apologies for the poor resolution, but I only had the PDF to work with)...
Forum: Tech Log
2nd Aug 2011, 22:56
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Rubbish - poorly researched article. The...

Rubbish - poorly researched article.

The stall warning sounded continuously from the apogee of the climb (at which point the aircraft approached and entered stall) for 57 seconds, after which...
Forum: Tech Log
2nd Aug 2011, 15:29
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

OK, CONF, I'm happy to be proved wrong -...

OK, CONF, I'm happy to be proved wrong - enlighten me - when else will the Airbus FBW system limit a *pitch up* command from the sidestick *other than beyond alpha max* in *Normal Law*?

(Bear in...
Forum: Tech Log
2nd Aug 2011, 14:46
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Different topic? Maybe - but I think it's...

Different topic? Maybe - but I think it's important to make clear that the only time it won't do it is if you've permanently disabled autothrust (as in held A/T disengage down for more than 15...
Forum: Tech Log
1st Aug 2011, 16:56
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Hi LW_50, I'd been meaning to ask you about...

Hi LW_50,

I'd been meaning to ask you about that as it happens, because that's exactly what I said!



Did you read 'pitots' as 'pilots'? (In any case it's my fault for using 'pitots' as a...
Forum: Tech Log
1st Aug 2011, 13:26
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Bloody hell - what was going on in that flight...

Bloody hell - what was going on in that flight deck? Surely "I have control" means just that, but if what you're saying is true, PNF said "I have control", the PF ignored him and he didn't say a...
Forum: Tech Log
1st Aug 2011, 13:16
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

But at the same time would it not be prudent to...

But at the same time would it not be prudent to check the altimeter (which would have been significantly unwinding at this point)? If AF had passed on the bulletin sent by Airbus regarding the...
Forum: Tech Log
1st Aug 2011, 10:13
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

@jcjeant - Nothing to do with any "protections"...

@jcjeant - Nothing to do with any "protections" as such, travel limiters on hydraulic surfaces have been around for donkey's years (you don't want the same input:deflection ratio at cruise as you do...
Forum: Tech Log
1st Aug 2011, 08:40
Replies: 1,998
Views: 509,146
Posted By DozyWannabe

Yes - quite clearly, although the deflection is...

Yes - quite clearly, although the deflection is clearly less in the earlier part of the graph - the question is, what was their altitude and airspeed in the two phases you highlight - it looks like...
Showing results 1 to 35 of 84
 
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