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Search: Posts Made By: infrequentflyer789
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Forum: Tech Log
10th Aug 2011, 21:08
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Look at the report. The trim does nothing until...

Look at the report. The trim does nothing until the a/c is at top of climb and proabbly already stalled. It does nothing because it didn't have to - small elevator movement was enough. Only as it...
Forum: Tech Log
10th Aug 2011, 20:52
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

With that collection of expertise, plus a copy of...

With that collection of expertise, plus a copy of the report, you ought to have figured it out unaided.

C* control law is no mystery, it is a feedback control loop that moves the control surfaces...
Forum: Tech Log
10th Aug 2011, 20:02
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

With respect, not sure you are correct there -...

With respect, not sure you are correct there - although maybe you have info I do not. Bear came to (more or less) a conclusion in this post:
...
Forum: Tech Log
8th Aug 2011, 15:23
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Ones complement and sign-magnitude both do this. ...

Ones complement and sign-magnitude both do this.

Not sure how much either is still in use though - not a lot, most things are twos complement, but maybe in some niches.

I have a very vague...
Forum: Tech Log
8th Aug 2011, 14:54
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Can't speak for Dozy, but two relevant arguments...

Can't speak for Dozy, but two relevant arguments that come to mind are Schipol and Bournemouth. The 737 autotrim does drop out with a/p - and the consequences when pilots didn't immediately realise...
Forum: Tech Log
8th Aug 2011, 14:10
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

S/W can be spurious, particularly in uAS, but...

S/W can be spurious, particularly in uAS, but also, I believe, with one AOA broken (it would be outvoted by the other two for the PRIMS, but would still trigger SW - think Perpignan but other way...
Forum: Tech Log
8th Aug 2011, 13:25
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Did the artificial feel include airspeed as input...

Did the artificial feel include airspeed as input ? - intuitively I feel it must do (and I believe B777 does), but deltas are very different so maybe it wasn't needed ?

If so, what did the system...
Forum: Tech Log
4th Aug 2011, 21:54
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

PNF seemed perfectly well "clued in" when it all...

PNF seemed perfectly well "clued in" when it all started to go wrong - he knew PF was over controlling roll and chastised him for it, he knew PF was climbing when he shouldn't have been. In fact PF...
Forum: Tech Log
29th Jul 2011, 17:49
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

I read it as "I no longer have control of the...

I read it as "I no longer have control of the plane". My french isn't that good either though. Hopefully english translation will be along soon.

I believe they definitely had _some_ pitch info,...
Forum: Tech Log
29th Jul 2011, 13:38
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

- regarding AF statement I would agree...

- regarding AF statement



I would agree - bear in mind it's probably gone through translation though.

The statement (at least in english) then goes on to contradict itself by saying that the...
Forum: Tech Log
29th Jul 2011, 12:27
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Which is what I meant - previous post edited to...

Which is what I meant - previous post edited to clarify.

Seeing as captain off duty happens rather frequently on long haul, it's slightly suprising (well, to me...) that there is no CRM training...
Forum: Tech Log
29th Jul 2011, 12:14
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

I assumed that they would determine from fdr...

I assumed that they would determine from fdr whether or not the plane responded (at all) to contorl surfaces and if it did so in the right direction. Less concerned about whether the response was...
Forum: Tech Log
29th Jul 2011, 11:49
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Whoa. two different things: 1. control...

Whoa. two different things:

1. control surfaces followed pilot control input. Always (as RetiredF4 said)
- control systems not at fault
2. plane follows control surface input. ...
Forum: Tech Log
29th Jul 2011, 11:41
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

links to new bea documents

BEA website seems to be struggling, but links direct to the pdf documents are still working (although takes a couple of tries for me):

The "note":

English: ...
Forum: Tech Log
27th Jul 2011, 21:53
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

I think your hope on training is sadly misplaced....

I think your hope on training is sadly misplaced. See Stop Stalling | Flight Safety Foundation (http://flightsafety.org/aerosafety-world-magazine/april-2011/stop-stalling) [reference posted earlier...
Forum: Tech Log
27th Jul 2011, 17:02
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

We'll never know what they thought. Question is...

We'll never know what they thought. Question is could the aircraft, through failure or some human interface factor in design, have convinced them they were inverted.

Very unlikely. As someone...
Forum: Tech Log
15th Jul 2011, 17:34
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

I don't think that is correct - I think autotrim...

I don't think that is correct - I think autotrim is always active outside of direct law (or manual backup) except in abnormal attitude law. Abnormal attitude law could, I guess, co-incide with low...
Forum: Tech Log
11th Jul 2011, 17:27
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Maybe not impossible, but I think the theory...

Maybe not impossible, but I think the theory falls at the same test as the idea that updrafts caused or accelerated the climb - namely that the kinetic-potential energy then doesn't add up. Those...
Forum: Tech Log
10th Jul 2011, 22:28
Replies: 1,998
Views: 509,542
Posted By infrequentflyer789

Curious, what would that achieve exactly ? Based...

Curious, what would that achieve exactly ? Based on the info we have (and see the helpful timelines previously posted by others) elevator authority alone was sufficient to get 16deg pitch up and...
Showing results 1 to 19 of 19


 
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