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Search: Posts Made By: mm43
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Forum: Tech Log
9th Jul 2011, 12:03
Replies: 1,069
Views: 279,485
Posted By mm43

@A33Zab Maybe the drawing hasn't been as...

@A33Zab

Maybe the drawing hasn't been as helpful as I thought, but check the ANU position again. The 0° position is represented by the line marked Attitude and the 13° NU is 3° above the Horizon...
Forum: Tech Log
9th Jul 2011, 02:38
Replies: 1,069
Views: 279,485
Posted By mm43

bearfoil; The colloquial expression would be,...

bearfoil;
The colloquial expression would be, "In drag!";)

However, treating their action as more like that of the rudder is probably the best way of looking at it. The effect would be small to...
Forum: Tech Log
9th Jul 2011, 01:19
Replies: 1,069
Views: 279,485
Posted By mm43

wallybird7; What's your definition of a...

wallybird7;
What's your definition of a thunderstorm? There was no lightning reported by other flights or observed by satellite.We don't know exactly, but the evidence presented so far doesn't point...
Forum: Tech Log
8th Jul 2011, 23:54
Replies: 1,069
Views: 279,485
Posted By mm43

bearfoil; Not exactly the case; the airfoil has...

bearfoil;
Not exactly the case; the airfoil has bottom camber and a current patent application by AI is for a THS with equal top and bottom camber.
Forum: Tech Log
8th Jul 2011, 23:04
Replies: 1,069
Views: 279,485
Posted By mm43

Just a reminder when talking about the THS - this...

Just a reminder when talking about the THS - this is what you should be thinking about:-

http://oi54.tinypic.com/pp2sz.jpg

With the direction of airflow relative to the THS as shown, a ND input...
Forum: Tech Log
8th Jul 2011, 22:27
Replies: 1,069
Views: 279,485
Posted By mm43

ALT-1, ALT-2 or ABNORMAL ATTITUDE LAW

I thought the June 01, 2011 David Kaminski-Morrow article in Flight Global (http://www.flightglobal.com/articles/2011/06/01/357394/stalled-af447-did-not-switch-to-abnormal-attitude-law.html) had been...
Forum: Tech Log
7th Jul 2011, 20:55
Replies: 1,069
Views: 279,485
Posted By mm43

BOAC; Could I put it this way - The...

BOAC;

Could I put it this way -

The only known method of locking the THS position is to hold on to the trim wheel. So if the THS is > 8 degrees and held, the elevator may not be effective at...
Forum: Tech Log
7th Jul 2011, 19:58
Replies: 1,069
Views: 279,485
Posted By mm43

The position of the sidestick(s) and its view...

The position of the sidestick(s) and its view from seat #3 appears to becoming an issue judging by posts in the last couple of pages. As previously noted many posts ago, the sidestick position is...
Forum: Tech Log
7th Jul 2011, 03:09
Replies: 1,069
Views: 279,485
Posted By mm43

From page 13 post #260 - AF447 Thread No.3...

From page 13 post #260 - AF447 Thread No.3 (http://www.pprune.org/tech-log/452836-af447-thread-no-3-a-13.html#post6478009) and 2725 posts ago.
Since the post above, A33Zab has provided...
Forum: Tech Log
1st Jul 2011, 20:23
Replies: 1,069
Views: 279,485
Posted By mm43

The pertinent points that need consideration...

The pertinent points that need consideration are:-


In the reported UAS instances they all involved a common mode problem associated with short term malfunction and/or disagreement between the...
Forum: Tech Log
26th Jun 2011, 19:50
Replies: 1,069
Views: 279,485
Posted By mm43

At 2 h 10 min 51, the stall warning was triggered...

At 2 h 10 min 51, the stall warning was triggered again. The thrust levers were positioned in the TO/GA detent and the PF maintained nose-up inputs.

Clearly PF induced.
Forum: Tech Log
21st Jun 2011, 21:12
Replies: 1,069
Views: 279,485
Posted By mm43

Svarin; You are right. I realized after I...

Svarin;

You are right. I realized after I posted "mean" that "median" also came into the equation".:)
Forum: Tech Log
21st Jun 2011, 20:42
Replies: 1,069
Views: 279,485
Posted By mm43

HazelNuts39; I seem to remember that A33Zab...

HazelNuts39;

I seem to remember that A33Zab had determined that it was the mean of the polled values - be it from whatever number of sources.

EDIT :: Not correct ... see posts below.
Forum: Tech Log
21st Jun 2011, 19:47
Replies: 1,069
Views: 279,485
Posted By mm43

wmelvin; Be careful when reading material which...

wmelvin;
Be careful when reading material which is not in context. The control law being used by AF447 at the time you refer to was not Normal Law. It was Alternate Law No.2 and pitch protections...
Forum: Tech Log
20th Jun 2011, 22:04
Replies: 1,069
Views: 279,485
Posted By mm43

MurphyWasRight; Well said.:ok: It is...

MurphyWasRight;

Well said.:ok:

It is time to stop trying to apportion blame to aircraft systems, and time to take a long hard look at the automation ~ human interface. It has often been said in...
Forum: Tech Log
17th Jun 2011, 23:30
Replies: 1,069
Views: 279,485
Posted By mm43

A33Zab; Did you actually mean:- Actual AOA...

A33Zab;
Did you actually mean:-

Actual AOA could be indeed 40° while not triggering ABNORMAL ATTITUDE LAW due to a median CAS value < 60 kts (resulting in a AOAi of 0°) as already mentioned in...
Forum: Tech Log
17th Jun 2011, 01:01
Replies: 1,069
Views: 279,485
Posted By mm43

PJ2; A nagging thought has been, why...

PJ2;

A nagging thought has been, why wouldn't/didn't the THS move the additional degree to 14° NU with what appears to have been fairly constant NU inputs?
Forum: Tech Log
17th Jun 2011, 00:58
Replies: 1,069
Views: 279,485
Posted By mm43

I doubt if there is overly much difference...

I doubt if there is overly much difference between the initial FDR printouts (http://oi55.tinypic.com/23lfk8k.jpg) of the Jetstar VH-EBA UAS incident and those recorded by AF447. Have a close look at...
Forum: Tech Log
16th Jun 2011, 22:31
Replies: 1,069
Views: 279,485
Posted By mm43

Bear; Strange that that propensity to...

Bear;

Strange that that propensity to develop the starboard roll was evident all the way to the deck. Was it not fuel imbalance that the A/P was keeping trimmed, or do you think that it had...
Forum: Tech Log
16th Jun 2011, 22:00
Replies: 1,069
Views: 279,485
Posted By mm43

Bearfoil; That statement appears to be quite...

Bearfoil;
That statement appears to be quite straight forward, and gives a clear impression that at the time of the AP/ATHR disconnect the aircraft was in level flight at FL350. The status of the...
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