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Forum: Tech Log
17th May 2019, 21:13
Replies: 1,646
Views: 389,152
Posted By alexd10

You on the other hand are a little malicious ,...

You on the other hand are a little malicious , since we all know very well that the autopilot it's only one of HAL's avatars on the flight deck
Forum: Tech Log
15th Mar 2019, 14:43
Replies: 1,646
Views: 389,152
Posted By alexd10

.....Both with planes perfect flyable, both with...

.....Both with planes perfect flyable, both with banal sensor malfunctions, both with inappropriate responses from PF, both with crews untrained for those flight circumstances, both with...
Forum: Tech Log
5th Jul 2017, 04:36
Replies: 21
Views: 6,523
Posted By alexd10

Perhaps you should consider that the limit layer...

Perhaps you should consider that the limit layer detach phenomena is in fact influenced not only of geometry (AOA) but also by Reynolds number (air speed), although many sources states that stall...
Forum: Tech Log
16th Jun 2015, 09:59
Replies: 27
Views: 4,943
Posted By alexd10

AC with hybrid electric propulsion

OK, it seems that electrical drive of propellers is on the road ...

But are anybody knowing of an attempt to develop electrical/hybrid "regenerative braking" ?
I mean propellers capable to...
Forum: Tech Log
11th Jun 2015, 11:28
Replies: 27
Views: 4,943
Posted By alexd10

Plus a lot of possible prime energy sources...

Plus a lot of possible prime energy sources (besides the extension cable mentioned in a post above and the obvious gas turbine generators APU-like ), like fuel cells - with no rotating parts, and...
Forum: Tech Log
16th Oct 2014, 07:24
Replies: 1,646
Views: 389,152
Posted By alexd10

Questionable design choice

... Perhaps adding a few lines of code and computing the "true" airspeed in the vane? (like dividing by cos(AOA))??, tis would give a speed of ~73kts for a 60KIAS and 35° AOA !!

or.... taking...
Forum: Tech Log
10th Sep 2014, 14:10
Replies: 1,646
Views: 389,152
Posted By alexd10

Recovery space

And more than that.. If the stab would have been manual trimmed to full ND position? how long would take to pitch the AC to a recovery AOA? Can be estimated, or at least guessed?

With the ...
Forum: Tech Log
2nd Jul 2014, 17:10
Replies: 1,646
Views: 389,152
Posted By alexd10

Hull insurance premiums

Maybe they should , but sure the increase is offset by the volume discount, so probably they pay less than smaller and "safer" operators....:(
Forum: Tech Log
21st Jun 2014, 19:35
Replies: 1,646
Views: 389,152
Posted By alexd10

We can therefore consider in addition to other...

We can therefore consider in addition to other possible causes for the persistence of pulling (and the uncommon pitch of 12-15° followed), the initial intention to avoid the storm by climbing,...
Forum: Tech Log
21st Jun 2014, 06:46
Replies: 1,646
Views: 389,152
Posted By alexd10

Semantics seems to strike again...

For Gods'sake Sir, I think it's possible that the "overpedantic " gentlemen had a slip of mind with "solved" and would better used "dealed by..' or "treated by..."
Forum: Tech Log
19th Jun 2014, 10:36
Replies: 1,646
Views: 389,152
Posted By alexd10

Did the Cpt Dubois experienced the SW or "inverted SW" only ?

And there is no certainty that even the SW was still on at the moment of his instrument scan.
And of course nobody want even to try to establish if at that time a determined (or yes, desperately)...
Forum: Tech Log
16th May 2014, 13:32
Replies: 1,646
Views: 389,152
Posted By alexd10

Changes after AF447

As a colleague of mine use to say , in this field the improvements are often written in blood. Maybe it is worth to try here to review what changes was eventually written in the blood of...
Forum: Tech Log
28th Mar 2013, 07:15
Replies: 24
Views: 6,848
Posted By alexd10

How much to drop the nose?

Maybe the answer should be found on the "forgetted and placed ..x screens down" AOA indicator?
Forum: Tech Log
5th Feb 2013, 06:48
Replies: 1,100
Views: 173,380
Posted By alexd10

exercise of imagination

We can of course made innumerable suggestions for workarounds (more or less fanciful), for the case they suffer of such shortage. As it seems that the most oblivious one (the change of the battery...
9th Oct 2012, 13:30
Replies: 1,316
Views: 323,149
Posted By alexd10

It seems that MR Kaminski-Morrow has a clue about...

It seems that MR Kaminski-Morrow has a clue about this matter.

http://www.flightglobal.com/news/articles/airbus-reviews-instrument-logic-in-aftermath-of-af447-374484/
Forum: Tech Log
14th Nov 2011, 09:32
Replies: 1,353
Views: 202,619
Posted By alexd10

Causes and solutions vs justifications to do nothing...

In this case UAS was an incident where no intervention was actually required, just keeping Normal Law in force. With 3 A/S data loss, but knowing that A/S cannot suddenly change on large scale...
Forum: Tech Log
13th Oct 2011, 10:09
Replies: 1,688
Views: 311,557
Posted By alexd10

Literal transcription of CVR

Jean-Pierre Otelli's book: "full transcript of the pilots’ voice recordings" acc to the Bloomberg/autor or " a part of a literal transcription of the Cockpit Voice Recorder" acc. to an inflamed BEA ?...
Forum: Tech Log
11th Oct 2011, 07:01
Replies: 1,688
Views: 311,557
Posted By alexd10

http://img254.imageshack.us/img254/4839/beap.jpg ...

http://img254.imageshack.us/img254/4839/beap.jpg

Your theory seems a little bit forced . As can be seen on the graph the selected VS value drops ceased to occur at the start of the climb, so...
Forum: Tech Log
6th Sep 2010, 06:31
Replies: 3,893
Views: 1,222,199
Posted By alexd10

''High vertical speed''

Hello!

Would be possible from the structural analyze of recovered parts to have a fair estimation of energy/speed (particularly vertical speed) at impact - a generally accepted value or a range ,...
Forum: Tech Log
8th Jun 2010, 02:48
Replies: 3,893
Views: 1,222,199
Posted By alexd10

Hello! Maybe I am missing something, but...

Hello!

Maybe I am missing something, but since airspeed is essentialy neded for assesment of the lift produced by the wings, would'nt be more straightforward to measure/calculate the lift? It...
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