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Search: Posts Made By: DozyWannabe
Showing results 1 to 35 of 140
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Forum: Tech Log
7th Nov 2011, 01:09
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

So, I was talking about some research this...

So, I was talking about some research this weekend. I got in touch with an old Aero Engineering pal of mine from Uni and he managed to wangle us some spare sim time at his facility in the wee hours...
Forum: Tech Log
6th Nov 2011, 21:12
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

A reaction to autoflight disengagement perhaps? ...

A reaction to autoflight disengagement perhaps? In all honesty I don't know, but the deviations around the normal prior to manual input still seem to be less than those encountered on the actual...
Forum: Tech Log
6th Nov 2011, 15:07
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

I think the simulator has a small, random amount...

I think the simulator has a small, random amount of air resistance worked in - even when flying in "clear air", there are still small "bumps", just as in the real world. The (simulated) FBW systems...
Forum: Tech Log
5th Nov 2011, 22:40
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

I suspect they're using different inputs to work...

I suspect they're using different inputs to work out the aircraft trajectory/velocity than air data, otherwise there's no way that Alt 2 would work with ADR DISAGREE. In fact I suspect that the data...
Forum: Tech Log
5th Nov 2011, 15:56
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

At a rough guess, I'd say as the airspeed goes...

At a rough guess, I'd say as the airspeed goes down, the greater the potential deflection of the elevators to match the orders being issued from the sidestick...
Forum: Tech Log
4th Nov 2011, 18:50
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

Remember that could also just as easily be an...

Remember that could also just as easily be an "invalid value" rendered as the lowest possible value in range by the graphing software. I'm not arguing it's definitely one thing or the other, but...
Forum: Tech Log
3rd Nov 2011, 20:14
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Franzl: I'm not being sarcastic at all! ...

@Franzl:

I'm not being sarcastic at all!

I'm asking as simply as I can whether you think putting two people in the flight deck who are not trained to fly manually at altitude, when the type...
Forum: Tech Log
3rd Nov 2011, 18:13
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Franzl: Allowing two F/Os, neither of whom...

@Franzl:

Allowing two F/Os, neither of whom had been trained in manual flying at altitude, to cross the ITCZ unsupervised with a known type-wide problem regarding UAS resulting in enforced manual...
Forum: Tech Log
3rd Nov 2011, 14:10
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

How long did you hold it and at roughly what...

How long did you hold it and at roughly what deflection?
Forum: Tech Log
3rd Nov 2011, 13:21
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@CONF Wouldn't that law change have been...

@CONF

Wouldn't that law change have been notified in the ACARS message though? I'm pretty certain that some knowledgeable people in earlier threads were certain that ABNORMAL mode was never...
Forum: Tech Log
3rd Nov 2011, 08:44
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@CONF Was this an A320 or A330 sim session? ...

@CONF

Was this an A320 or A330 sim session? Apologies, but I don't know which type you're actually on at present.
Forum: Tech Log
2nd Nov 2011, 17:56
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

But autotrim under manual control is not...

But autotrim under manual control is not "automation" in the classic sense of the term, it is entirely slaved to the demands of the pilot in control, which is why you have to be more careful with the...
Forum: Tech Log
2nd Nov 2011, 00:25
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@if789 Wasn't the pitot-static system...

@if789

Wasn't the pitot-static system effectively completely hosed in the Perpignan case though (the systems must have been very badly compromised)? I must confess I didn't have an opportunity to...
Forum: Tech Log
1st Nov 2011, 23:18
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Franzl You're comparing apples with oranges...

@Franzl

You're comparing apples with oranges here, or to be more literal, comparing the conventional, or "way we used to do it" method with the method on the FBW Airbus series, which is intended...
Forum: Tech Log
1st Nov 2011, 22:51
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

I always read "activate" as "will sound" in that...

I always read "activate" as "will sound" in that sentence as opposed to "becomes available". Would be nice to get some confirmation.
Forum: Tech Log
1st Nov 2011, 22:00
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Franzl Autotrim is a separate system from...

@Franzl

Autotrim is a separate system from the protections and the autoflight, as such under manual control and without protections it does exactly what the pilot commands. It does exactly what...
Forum: Tech Log
1st Nov 2011, 03:07
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

Because someone above either of our paygrades on...

Because someone above either of our paygrades on both the pilot and engineering side decided that the benefits outweighed the drawbacks.

Think about it logically - the difference between looking...
Forum: Tech Log
1st Nov 2011, 02:07
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@BarbiesBoyfriend The ending of the story...

@BarbiesBoyfriend

The ending of the story (aircraft pitches up to an attitude that has no business being achieved in cruise) is the same in both cases however. The proper response to the story...
Forum: Tech Log
1st Nov 2011, 01:22
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

Au contraire, sir - I'd *love* to know why they...

Au contraire, sir - I'd *love* to know why they didn't hear it - and if it didn't sound then I'd be the first to say that would be a major problem. But unless you're accusing the BEA of falsifying...
Forum: Tech Log
1st Nov 2011, 00:47
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

The Stall Warning and "cricket" annunciation is...

The Stall Warning and "cricket" annunciation is on the d*mn CVR - if they were picked up on the CAM or the hot mikes, it was audible in the flight deck. Must try harder.

Radio silence resumed.
Forum: Tech Log
1st Nov 2011, 00:39
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

Franzl, The FCU has no concept of...

Franzl,



The FCU has no concept of "cruise", as far as I am aware. It is a real-time processing system that does the job it was designed to do very well, but it is intentionally quite a simple...
Forum: Tech Log
31st Oct 2011, 20:58
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

Look up the concept of "graceful degradation". ...

Look up the concept of "graceful degradation".

You're talking about handing a pilot who may have not flown under manual trim conditions since their last checkride (or possibly even earlier) the...
Forum: Tech Log
31st Oct 2011, 17:05
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

It's a perfectly rational design, because what it...

It's a perfectly rational design, because what it is doing is performing in exactly the same manner it does in Normal Law. A pilot whose commercial experience consists entirely of FBW Airbus time is...
Forum: Tech Log
31st Oct 2011, 10:00
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Machinbird The way you describe it, less...

@Machinbird

The way you describe it, less knowledgeable people would assume that the aircraft autotrimmed nose up entirely on its own without any order or prompting to do so. Of all the UAS...
Forum: Tech Log
30th Oct 2011, 22:58
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Mr. Optimistic: Both links (FR and EN)...

@Mr. Optimistic:

Both links (FR and EN) working fine for me. PM me if you have further issues and I'll send you my local copies.
Forum: Tech Log
30th Oct 2011, 20:50
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Lyman - just this once I'll respond. You show...

@Lyman - just this once I'll respond. You show me where it stops and resumes, and then I'll contemplate taking you seriously, otherwise I assure you that trying to engage me further will remain an...
Forum: Tech Log
30th Oct 2011, 19:42
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

This is a serious question, I promise I'm not...

This is a serious question, I promise I'm not being facetious here... Why do you consider it an aberration?

Would you not use manual trim in a conventional aircraft if elevator authority was not...
Forum: Tech Log
30th Oct 2011, 17:03
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Hamburt Spinkleman: Correct - the important...

@Hamburt Spinkleman:

Correct - the important paragraph is on the following page:



There's a reason that Alternate 2 is marked with a very clear "(NO PROT)" on the ECAM.
Forum: Tech Log
24th Oct 2011, 17:40
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

@Organfreak - totally. I just get (IMO...

@Organfreak - totally.

I just get (IMO rightly) irritated when I see the whole yokes vs. sidesticks, active vs. passive feedback being brought back up when it has pretty much bu*ger-all to do...
Forum: Tech Log
24th Oct 2011, 17:11
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

The exchange, as translated into English is at...

The exchange, as translated into English is at approx. 2:14:05



The captain could see that the aircraft was pitching up via the instruments - no need to look at the stick. At this point,...
Forum: Tech Log
24th Oct 2011, 16:35
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

What "ergo" issues? The yoke would not have...

What "ergo" issues? The yoke would not have fixed things - connecting the sidesticks would not have fixed things - this is a case of a temporary loss of airspeed data leading to panic, confusion and...
Forum: Tech Log
24th Oct 2011, 15:33
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

We also have Birgenair though, when there was a...

We also have Birgenair though, when there was a disagreement between the Captain and FO, the FO could see what the Captain was doing but did not intervene. The yoke argument is a red herring, and...
Forum: Tech Log
24th Oct 2011, 14:43
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

IMO that's what a die-hard yoke-plus-steam-gauge...

IMO that's what a die-hard yoke-plus-steam-gauge fan would say. It'd be a funny world if we were all alike.
Forum: Tech Log
24th Oct 2011, 13:32
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

The point is that a three-man crew including...

The point is that a three-man crew including Flight Engineer on a yoke-equipped steam-gauge Boeing 727 got themselves into exactly the same mess for very similar reasons, so to claim that the...
Forum: Tech Log
24th Oct 2011, 12:18
Replies: 1,688
Views: 406,287
Posted By DozyWannabe

Page 7 of the NTSB report, (Page 10 of the PDF): ...

Page 7 of the NTSB report, (Page 10 of the PDF):

http://www.airdisaster.com/reports/ntsb/AAR75-13.pdf



So it's a peak value rather than sustained...
Showing results 1 to 35 of 140
 
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