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Search: Posts Made By: Machinbird
Showing results 1 to 35 of 82
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Forum: Tech Log
28th Jul 2017, 23:48
Replies: 1,677
Views: 531,003
Posted By Machinbird

For a person who suspects he about to meet his...

For a person who suspects he about to meet his maker, and doesn't know exactly how he got in that fix, that action is about the only choice left. It is too late to put the nose down and gain speed. ...
Forum: Tech Log
8th Jun 2017, 19:02
Replies: 1,677
Views: 531,003
Posted By Machinbird

People seem to seek clean-logical data that logic...

People seem to seek clean-logical data that logic and engineering can explain. Life isn't like that.

The best explanation for AF447 are the first three sentences of this quote from Frank Herbert's...
Forum: Tech Log
1st Mar 2017, 19:42
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours, Yes, the aircraft did perform as...

Concours,
Yes, the aircraft did perform as designed, however in retrospect there was room for improvement. Aside from the pitot system that was overly sensitive to ice crystal blockage, the stall...
Forum: Tech Log
28th Feb 2017, 04:43
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours, the word jet upset normally invokes an...

Concours, the word jet upset normally invokes an aircraft in a bad attitude such as the CRJ that crashed in Northern Sweden. This was a bit different. It was an oscillation that the PF was fighting...
Forum: Tech Log
27th Feb 2017, 16:32
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours77 This is not intended as a put down,...

Concours77
This is not intended as a put down, but you are lacking sufficient aviation experience to properly understand the elements of the AF447 accident. You have almost certainly not hand flown...
Forum: Tech Log
27th Feb 2017, 03:25
Replies: 1,677
Views: 531,003
Posted By Machinbird

Chris, That is a good summary of the trim...

Chris,
That is a good summary of the trim function. It was surprising how stable AF447 was in the stall. I initially expected that such an aircraft would drop a wing and progress into a spin, but...
Forum: Tech Log
27th Feb 2017, 02:30
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours There is a triggering sequence for...

Concours
There is a triggering sequence for activation of fight or flight, but as your own reference indicates, it is near instantaneous, at least within the body's own internal measurement of time....
Forum: Tech Log
26th Feb 2017, 22:07
Replies: 1,677
Views: 531,003
Posted By Machinbird

Sorry Concours, your example is not comparable. ...

Sorry Concours, your example is not comparable. You didn't even see the threat.
No wonder you didn't get a fight or flight response. I saw the image of two planes (in the midst of my formation!)...
Forum: Tech Log
26th Feb 2017, 19:58
Replies: 1,677
Views: 531,003
Posted By Machinbird

Now I have personal experience that refutes that...

Now I have personal experience that refutes that statement.
I went from normal alertness while flying formation to an adrenaline heart slam as I was looking to spot and avoid flaming wreckage...
Forum: Tech Log
26th Feb 2017, 16:54
Replies: 1,677
Views: 531,003
Posted By Machinbird

Another reference-Bruce Tognazzini on Panic

Bruce Tognazzini wrote this blog on panic some time ago. His specialty is software design however he is a pilot and diver as well.
Panic! How it Works and What To Do About It...
Forum: Tech Log
26th Feb 2017, 01:18
Replies: 1,677
Views: 531,003
Posted By Machinbird

Summarizing Neil on Fight or Flight

I have cherry picked the Neil piece for physiological information that might be applied to AF447. Neil's emphasis was on preventing and controlling over-activation of of the fight or flight...
Forum: Tech Log
24th Feb 2017, 18:00
Replies: 1,677
Views: 531,003
Posted By Machinbird

FIGHT/FLIGHT RESPONSE

First, thank you Owain Glyndwr for the confirmation of the A332 trim tank aft cg contribution.

I believe it is necessary to discuss the physiological fear response to understand the human side of...
Forum: Tech Log
23rd Feb 2017, 16:20
Replies: 1,677
Views: 531,003
Posted By Machinbird

Yes, familiar ground until we get to this part of...

Yes, familiar ground until we get to this part of the statement:

I think that if we look within ourselves, we will agree with this statement also, and that is an opening into a discussion of fear...
Forum: Tech Log
23rd Feb 2017, 16:07
Replies: 1,677
Views: 531,003
Posted By Machinbird

Icepack and Owain, thank you both for the...

Icepack and Owain, thank you both for the correction.:O
From the BEA final report (English version),
From a A332 CG chart, the max inflight aft CG for 205 kg x 1000 (is that the same as 205...
Forum: Tech Log
23rd Feb 2017, 13:37
Replies: 1,677
Views: 531,003
Posted By Machinbird

Winnerhofer Perhaps you provided the link so...

Winnerhofer
Perhaps you provided the link so that Concours could better inform himself.
With regard to AF447, the trim tank was full, and that meant that the CG was at or near the aft limit which...
Forum: Tech Log
23rd Feb 2017, 04:57
Replies: 1,677
Views: 531,003
Posted By Machinbird

No, that was not the intent of the post. If...

No, that was not the intent of the post.

If Bonin had used a strategy of control such as I described, the aircraft would have arrived in Paris. Since that is not what happened, it means he used...
Forum: Tech Log
22nd Feb 2017, 04:42
Replies: 1,677
Views: 531,003
Posted By Machinbird

Hand flying strategies

Concours77, you may not have realized how different hand flying in the mach number range at altitude is from your experience in hand flying light aircraft at lower altitudes.

The very high true...
Forum: Tech Log
22nd Feb 2017, 02:17
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours77, we know you are a lawyer (with light...

Concours77, we know you are a lawyer (with light aircraft experience) trying to make sense of the AF447 accident. Others are also interested in the accident and what can be taken away and used. ...
Forum: Tech Log
21st Feb 2017, 04:09
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours77 I'm not sure if we are on the same...

Concours77
I'm not sure if we are on the same page, Concours. Do you now agree that an extreme fear response can occur virtually instantly or do you hold a viewpoint that it takes a significant...
Forum: Tech Log
20th Feb 2017, 17:56
Replies: 1,677
Views: 531,003
Posted By Machinbird

Well, I think I will take issue with this...

Well, I think I will take issue with this statement. From practical experience, the acute attention physiological response (Fear response)takes about 1 heartbeat. You know when it hits you because...
Forum: Tech Log
20th Feb 2017, 15:33
Replies: 1,677
Views: 531,003
Posted By Machinbird

In this case of AF447, just the pilot as in gross...

In this case of AF447, just the pilot as in gross over-control.

No, didn't miss it. He is being thrown around in the cockpit as the aircraft experiences wing drop in the stall, a logical...
Forum: Tech Log
20th Feb 2017, 04:15
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours77, there exists an uneasy relationship...

Concours77, there exists an uneasy relationship between pilots and things that record what they do and say in the cockpit.
In order to have CVRs in the cockpit, the authorities have had to agree...
Forum: Tech Log
19th Feb 2017, 22:10
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours77, I am glad that we have your...

Concours77, I am glad that we have your motivation and background out in the open. In a PM earlier I noted that I perceived that you were attempting to steer the narrative of the accident. The...
Forum: Tech Log
15th Feb 2017, 00:50
Replies: 1,677
Views: 531,003
Posted By Machinbird

Think Quickly

At the time of the event, I was seriously concerned about dying as you suggest.
The aircraft was a North American T-2A which was a straight wing jet trainer. I was number 6 to roll with 10 seconds...
Forum: Tech Log
14th Feb 2017, 00:45
Replies: 1,677
Views: 531,003
Posted By Machinbird

Actually this was an accident, and if they were...

Actually this was an accident, and if they were not experiencing fear on the way down with their aircraft not responding in the way they were expecting it to, then they were not human.
A big clue...
Forum: Tech Log
13th Feb 2017, 02:38
Replies: 1,677
Views: 531,003
Posted By Machinbird

Flight Control in the modern age

Concours77, be very careful of home grown definitions in the broader context of modern aviation.
Before you can understand the Airbus FBW flight control laws, (and the AF447 accident) you should...
Forum: Tech Log
12th Feb 2017, 20:45
Replies: 1,677
Views: 531,003
Posted By Machinbird

Oh it is trim all right. Trim refers to the...

Oh it is trim all right. Trim refers to the effect on the aircraft as a whole, and is used to control the aircraft pitching moment within the limits of its trim authority.

There are any number...
Forum: Tech Log
30th Jan 2017, 01:27
Replies: 1,677
Views: 531,003
Posted By Machinbird

Speedbrakes

It was really unfortunate that Robert came down so hard on Bonin when he put out the speed brakes thus causing them to be immediately stowed.

You would think that someone would have tumbled to the...
Forum: Tech Log
29th Jan 2017, 19:23
Replies: 1,677
Views: 531,003
Posted By Machinbird

Realistically, it doesn't matter whether or not...

Realistically, it doesn't matter whether or not the autopilot is engaged. For any flight condition that is a valid overspeed at an authorized altitude, for 1 g flight, you will be above the 1 g...
Forum: Tech Log
17th Jan 2017, 01:42
Replies: 1,677
Views: 531,003
Posted By Machinbird

Concours77 Sorry about the loss of your flight...

Concours77
Sorry about the loss of your flight instructor in what seems to be a needless accident.

As one who has operated in the aircraft carrier environment, I can guarantee you that he was...
Forum: Tech Log
16th Jan 2017, 03:30
Replies: 1,677
Views: 531,003
Posted By Machinbird

The difference between a fear inducing situation...

The difference between a fear inducing situation and a demanding one is the recognition that you have the tools and knowledge to manage the situation.

You may possess the tools and knowledge to...
Forum: Tech Log
15th Jan 2017, 14:30
Replies: 1,677
Views: 531,003
Posted By Machinbird

Thinking back on my own military training, the...

Thinking back on my own military training, the key element is to take pilots well out of their comfort zone and teach them how to succeed despite adversity.
Example: All attitude jet unusual...
Forum: Tech Log
14th Jan 2017, 01:51
Replies: 1,677
Views: 531,003
Posted By Machinbird

At present, the most critical element in an...

At present, the most critical element in an aircraft is the man/woman in control. How he perceives, how he analyzes, what he does, is under control of a brain that has been hard-wired to handle fear...
Forum: Tech Log
2nd Apr 2015, 05:02
Replies: 1,677
Views: 531,003
Posted By Machinbird

Vilas, What you say is absolutely correct as to...

Vilas,
What you say is absolutely correct as to the overt behavior of the aircraft and apparent reason for the AF447 pitch up. As you probably know, some of us have been looking at roll PIO as a...
Forum: Tech Log
28th Mar 2015, 18:01
Replies: 1,677
Views: 531,003
Posted By Machinbird

Dozy, you are making this more complicated than...

Dozy, you are making this more complicated than it is supposed to be. In Normal law, Full lateral stick is supposed to deliver 15 degrees/second roll rate, period. See FCOM. The computer magic...
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