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Search: Posts Made By: DozyWannabe
Showing results 1 to 35 of 208
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Forum: Tech Log
24th Sep 2016, 08:21
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Well, I'd imagine they'd be reliable if the...

Well, I'd imagine they'd be reliable if the vertical airflow in a stall situation was > 60kts, but on the other hand that's a situation that no-one in their right mind would want to be in!
Forum: Tech Log
24th Sep 2016, 02:05
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

With respect, I remember it a bit differently. I...

With respect, I remember it a bit differently. I think the consensus was that in theory it's a good idea, however in the case of this particular accident the crew missed so many cues from the...
Forum: Tech Log
11th Jun 2015, 01:14
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

@NeoFit - As Machinbird points out, that post is...

@NeoFit - As Machinbird points out, that post is not entirely correct. The PIO began long before the aircraft entered into the stall regime, and the YD was doing its best to correct for it.
Forum: Tech Log
20th May 2015, 00:20
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

You'd sound more credible if you'd get the...

You'd sound more credible if you'd get the terminology right - "button pushing" is a feature of autoflight, *not* FBW. FBW and automation are categorically not the same thing.
Forum: Tech Log
31st Mar 2015, 23:29
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Which is kind of the point I was trying to make. ...

Which is kind of the point I was trying to make. Far from making things more complicated, I think my position is fairly simple - namely that the lack of training or experience in high-altitude...
Forum: Tech Log
28th Mar 2015, 05:11
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

How could he have been expecting a Normal Law...

How could he have been expecting a Normal Law roll response when he had no experience of what that response was?


What I've read suggests that he had no training or experience whatsoever on high...
Forum: Tech Log
27th Mar 2015, 04:49
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

With respect, riddle me this; how do you expect...

With respect, riddle me this; how do you expect Bonin to have a feel for what the "normal" roll gains are and therefore be thrown by the difference in Alt2B when it is on record that he had no...
Forum: Tech Log
19th Mar 2015, 05:10
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

'Ullo, everybody... The Flight Control...

'Ullo, everybody...



The Flight Control Law shouldn't really matter that much. In real terms, Alternate Law means "take extra care with your inputs, as it's now possible to stall your...
Forum: Tech Log
11th Feb 2015, 23:18
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

I wish I could still find the page I dug up back...

I wish I could still find the page I dug up back in 2010 with the details. As best I can remember, it mentioned Bonin undergoing some kind of basic, intermediate and advanced gliding qualifications...
Forum: Tech Log
29th Jan 2015, 14:05
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Fair point, but then I never claimed to be a...

Fair point, but then I never claimed to be a pilot! ;)
Forum: Tech Log
28th Jan 2015, 19:32
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

The fundamentals are actually more-or-less...

The fundamentals are actually more-or-less identical to what they were in 1988. The crucial point (which to the best of my knowledge has always been in FCTM/FCOM etc.) is that in ALT or Direct Law,...
Forum: Tech Log
25th Jan 2015, 05:17
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Maybe so, but as I understand it there's enough...

Maybe so, but as I understand it there's enough "wiggle room" to add a pitch component at 67 degrees of bank (even if only a small pitch component) - just as you can command a small (but effective)...
Forum: Tech Log
25th Jan 2015, 03:38
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Right, but that doesn't imply any wrongdoing. ...

Right, but that doesn't imply any wrongdoing. Sometimes it just works out that way. Famously, the joint IFREMER/Woods Hole Titanic expedition of 1985 started with the IFREMER team getting massively...
Forum: Tech Log
25th Jan 2015, 01:25
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

No. The bank angle limit of 67 degrees at full...

No. The bank angle limit of 67 degrees at full stick deflection is a completely separate definition from the 2.5g limit. Obviously, the closer one is to 67 degrees of bank, the more conservative...
Forum: Tech Log
22nd Jan 2015, 01:19
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Er, what systems do you believe "induced piloting...

Er, what systems do you believe "induced piloting errors"? At no point in the sequence did the crew act in a concerted manner to either apply the appropriate procedures or perform logical...
Forum: Tech Log
14th Jan 2015, 21:28
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

The AF447 final report notes that he qualified as...

The AF447 final report notes that he qualified as a glider pilot in 2001. Alas, I can no longer find the specific details, but I do recall there was once an article online which enumerated F/O...
Forum: Tech Log
2nd Jan 2015, 22:22
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

The AoA vanes are only certified to produce valid...

The AoA vanes are only certified to produce valid information above 60kts IAS. As I said earlier:



I also stated in that post that a bit of thought on that point should have indicated a...
Forum: Tech Log
29th Dec 2014, 23:07
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Presumably because it was a different scenario. ...

Presumably because it was a different scenario. As I've said before, with SR111 the most glaring outcome regarding procedure was that the cockpit smoke procedures were not fit for purpose because...
Forum: Tech Log
19th Dec 2014, 13:45
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Correct - I was having trouble finding hard data...

Correct - I was having trouble finding hard data on the A330/340, so went with this A320 document: http://www.737ng.co.uk/a320training.pdf

in the interim.

(Page 15 of the PDF, Page 13 : "Normal...
Forum: Tech Log
18th Dec 2014, 23:30
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

There are no "land phases" to "bar". ...

There are no "land phases" to "bar".

Alternate Law transitions to Direct when landing gear is selected down - the only significant difference (other than minor changes in handling characteristics)...
Forum: Tech Log
18th Dec 2014, 19:47
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

@jcj - I didn't say the crew had no basic...

@jcj - I didn't say the crew had no basic knowledge of aerodynamics, I just stated that a pilot with a basic knowledge of aerodynamics should (given sufficient time to think) be able to work out that...
Forum: Tech Log
18th Dec 2014, 00:51
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

No Computed Data - i.e. the value is invalid and...

No Computed Data - i.e. the value is invalid and cannot be used for further processing.


That was a secondary consequence (or "side effect" in engineering-speak) of the systems design as a whole....
Forum: Tech Log
17th Dec 2014, 23:34
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Right, but it's not really particularly relevant...

Right, but it's not really particularly relevant - all it means is that for brief periods, both the AoA and IAS data were effectively NCD. It wouldn't make much difference.
Forum: Tech Log
17th Dec 2014, 23:12
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

I don't know - in what scenario do you mean?

I don't know - in what scenario do you mean?
Forum: Tech Log
17th Dec 2014, 22:21
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

That's an inaccurate statement. The SW system is...

That's an inaccurate statement. The SW system is active at all times - but it can't function without valid data from the AoA vanes, and the AoA vanes are only certified to operate above 60kts IAS. ...
Forum: Tech Log
13th Dec 2014, 00:21
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

On what evidence do you base this assertion? ...

On what evidence do you base this assertion?

(And how does a decades-old issue regarding throttle control on Audi cars have anything to do with AF447?)


Right, but as Gysbreght says (and as...
Forum: Tech Log
3rd Dec 2014, 14:33
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Few points to address, so here goes: @gums -...

Few points to address, so here goes:

@gums - I think what might be worth bearing in mind is that your Viper was intended to be flown by fast jet pilots, and as such they would routinely be trained...
Forum: Tech Log
30th Nov 2014, 03:58
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

No it wasn't - the FMS/autoflight systems of the...

No it wasn't - the FMS/autoflight systems of the A320 were of the same generation and layout as those fitted to the B757 and B767, which had been around for eight years when the A320 went into...
Forum: Tech Log
29th Nov 2014, 19:11
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Precisely. I have it on good authority that...

Precisely.

I have it on good authority that BZ was to all intents and purposes a figurehead for the engineering end of things during the actual development and testing work. Gordon Corps was the...
Forum: Tech Log
27th Nov 2014, 02:33
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

And yet the head of the pilot engineering team...

And yet the head of the pilot engineering team was the man who succeeded the legendary D. P. Davies - presumably poached precisely because he had experience in testing and designing around pilots'...
Forum: Tech Log
11th Nov 2014, 17:14
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

Hmm... I think while there's a general point to...

Hmm... I think while there's a general point to be made there, I'm not sure about the specifics.

As I understand it, the deal with SR111 was that "the book" was inadequate for purpose. Not in the...
Forum: Tech Log
7th Nov 2014, 18:37
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

@Pappy320: None whatsoever - the vertical...

@Pappy320:

None whatsoever - the vertical stab was still partially attached to the fuselage frames and the break pattern was consistent with detachment upon impact with the ground. See Final...
Forum: Tech Log
6th Nov 2014, 14:54
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

@mm43 - Cheers, I did Google it last night. It's...

@mm43 - Cheers, I did Google it last night. It's actually a comment on the blog IIRC, but I looked up the guys profile and he seems to know what he's on about. I don't know where the first one came...
Forum: Tech Log
5th Nov 2014, 22:43
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

@Winnerhofer - I don't mean to be a pain, but...

@Winnerhofer - I don't mean to be a pain, but it'd really make interpreting your posts a lot easier if you could state where your quotes come from.
Forum: Tech Log
5th Nov 2014, 01:47
Replies: 1,677
Views: 529,718
Posted By DozyWannabe

I can't see anything in the final report's main...

I can't see anything in the final report's main body specifically relating to the *latching* of Alt2B, just the flight law change itself, which would obviously occur in a much shorter period of time.
Showing results 1 to 35 of 208
 
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