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Search: Posts Made By: JD-EE
Showing results 1 to 35 of 83
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Forum: Tech Log
13th Aug 2011, 00:41
Replies: 1,998
Views: 511,851
Posted By JD-EE

ChristianJ - let's not feed the troll. Simply...

ChristianJ - let's not feed the troll. Simply ignore him using the control panel.
Forum: Tech Log
13th Aug 2011, 00:35
Replies: 1,998
Views: 511,851
Posted By JD-EE

jcjeant - actually pilots should be encouraged to...

jcjeant - actually pilots should be encouraged to fly. The computer should monitor flight parameters and if the PF does something stupid the computer takes it back for five minutes before the PF can...
Forum: Tech Log
13th Aug 2011, 00:10
Replies: 1,998
Views: 511,851
Posted By JD-EE

CaptainGef, I agree with David Learmount on...

CaptainGef, I agree with David Learmount on everything within his field of excellence and experience. It's perhaps coincidental I came to most of the same conclusions.

The chief item I'd take...
Forum: Tech Log
9th Aug 2011, 18:11
Replies: 1,998
Views: 511,851
Posted By JD-EE

Computers in cockpits....

As a thought experiment I started looking at the data available to the computers that inform the pilot (and autopilot system component) with information about the plane's position, velocity,...
Forum: Tech Log
9th Aug 2011, 17:45
Replies: 1,998
Views: 511,851
Posted By JD-EE

rudderrat and takata, when rudderrat said or...

rudderrat and takata, when rudderrat said or quoted "The elevator orders are progressively transferred to the THS through a low-speed integrator to decrease the drag." was this necessarily correct?...
Forum: Tech Log
9th Aug 2011, 17:10
Replies: 1,998
Views: 511,851
Posted By JD-EE

3holelover re my comment about the plane image...

3holelover re my comment about the plane image control surfaces clue, "Airbus will also display that on the ECAM FLT CTL page. (but you all knew that, right?... Is the suggestion for a separate...
Forum: Tech Log
7th Aug 2011, 12:55
Replies: 1,998
Views: 511,851
Posted By JD-EE

Linktrained, marketing isn't the only powerhouse...

Linktrained, marketing isn't the only powerhouse that can lead to changes like new software. Legal can also be most persuasive when they remark casually that not fixing these here bugs will cost the...
Forum: Tech Log
7th Aug 2011, 11:11
Replies: 1,998
Views: 511,851
Posted By JD-EE

alainthailande...

alainthailande (http://www.pprune.org/members/216241-alainthailande), as an engineer practicing for even more years than that I have heard of the double zero implementation. Most of the old vacuum...
Forum: Tech Log
7th Aug 2011, 10:40
Replies: 1,998
Views: 511,851
Posted By JD-EE

Smilin Ed, out of curiosity what is the rate of...

Smilin Ed, out of curiosity what is the rate of change for the THR in manual control mode? How fast can it move 13 degrees? If 0.65 degrees per second is as good as it gets does that adjust your...
Forum: Tech Log
7th Aug 2011, 10:24
Replies: 1,998
Views: 511,851
Posted By JD-EE

3holelover - indeed it was a perfect storm. It...

3holelover - indeed it was a perfect storm. It was as if the events were tailored to send that specific pilot to the briny deep.

My imagination stretches farther than yours, I guess. I remember me...
Forum: Tech Log
6th Aug 2011, 12:33
Replies: 1,998
Views: 511,851
Posted By JD-EE

jimjim - accounted for - the energy loss work I...

jimjim - accounted for - the energy loss work I did ran from the mach numbers translated back to speeds based on the speed of sound - an approximation. It appears to be about a factor of 2 give or...
Forum: Tech Log
6th Aug 2011, 12:31
Replies: 1,998
Views: 511,851
Posted By JD-EE

I've said too much already but there is an...

I've said too much already but there is an observation I'd like to make.

Here is a simple sentence. "Our speed is 215 kts." This is in English. If I say it with flat or even feminine with the...
Forum: Tech Log
6th Aug 2011, 12:26
Replies: 1,998
Views: 511,851
Posted By JD-EE

Mr O Indeed - I am a night owl. And I thought I...

Mr O
Indeed - I am a night owl. And I thought I left room in there for cabin pressure sensing in the ears. But the inner ears don't feel even pretty extreme pressure changes unless you've had...
Forum: Tech Log
6th Aug 2011, 12:24
Replies: 1,998
Views: 511,851
Posted By JD-EE

Mr Optimistic, "I though the 0.5*(v1^2-v2^2)=gh...

Mr Optimistic, "I though the 0.5*(v1^2-v2^2)=gh equation had been looked at earlier and found to be broadly consistent ?"

It was - with a speed at the apex of 215 kts, 240 kts maybe....
Forum: Tech Log
6th Aug 2011, 12:20
Replies: 1,998
Views: 511,851
Posted By JD-EE

takata commented to A33Zab about the IR data. ...

takata commented to A33Zab about the IR data.

Regardless of the IR data from ADIRU the ISIS data existed. And enough data was recorded that the BEA was able to follow altitude and attitude of the...
Forum: Tech Log
6th Aug 2011, 11:39
Replies: 1,998
Views: 511,851
Posted By JD-EE

funfly, you can be falling at mach 20 and not...

funfly, you can be falling at mach 20 and not feel it. All you can feel in your ears or your body is a CHANGE in velocity. And there is no known body that, in air, continues to accelerate all the way...
Forum: Tech Log
6th Aug 2011, 11:32
Replies: 1,998
Views: 511,851
Posted By JD-EE

re airtren to lone - I think the word you're...

re airtren to lone - I think the word you're looking for to replace "lack" in "lack of lift" is "insufficient". As a matter of fact that is how I interpreted lone's comment.

By the way, what does...
Forum: Tech Log
6th Aug 2011, 11:30
Replies: 1,998
Views: 511,851
Posted By JD-EE

Black Sheds, one might ask about what part of the...

Black Sheds, one might ask about what part of the plane being at fault for providing bad data in the period immediately after the aircraft went to ALT 2 mode. Airspeed was out. "Protections" were...
Forum: Tech Log
6th Aug 2011, 11:17
Replies: 1,998
Views: 511,851
Posted By JD-EE

Neptunus Rex says, "The reaction on their inner...

Neptunus Rex says, "The reaction on their inner ears should have told them that they were in a rapid descent."

No. Their inner ears can only tell them they accelerated downwards at some point....
Forum: Tech Log
6th Aug 2011, 11:08
Replies: 1,998
Views: 511,851
Posted By JD-EE

3holelover types, " I'm presuming those of you...

3holelover types, " I'm presuming those of you asking it are not pilots, because I can't imagine a pilot who could ever not know if he's stalled, PDQ, after the fact."

Then the PF on AF447 was...
Forum: Tech Log
6th Aug 2011, 10:52
Replies: 1,998
Views: 511,851
Posted By JD-EE

takata posted the speed graph...

takata posted the speed graph (http://www.pprune.org/tech-log/456874-af-447-thread-no-5-a-80.html#post6621344). It does not show something I expected. In climbing from 35000 to 37500 it should have...
Forum: Tech Log
5th Aug 2011, 10:08
Replies: 1,998
Views: 511,851
Posted By JD-EE

HN39 - I am addressing what to do upon entering...

HN39 - I am addressing what to do upon entering ALT 2 with no airspeed indication. Once in a stall first course on the table is admit you are stalled. Second course is nose down with an urgency...
Forum: Tech Log
5th Aug 2011, 09:40
Replies: 1,998
Views: 511,851
Posted By JD-EE

DozyWannabee, I note that takata's recent note...

DozyWannabee, I note that takata's recent note about the plane aimed down when the PF requested NU and your comments about not seeing a conflict in that suggests another basic rule for "strange...
Forum: Tech Log
4th Aug 2011, 11:11
Replies: 1,998
Views: 511,851
Posted By JD-EE

Shadoko, if I had to guess I'd suggest there was...

Shadoko, if I had to guess I'd suggest there was an analog to digital converter in the picture that saturated and went past saturation. Some specific types will peg and stay there. Others will wrap...
Forum: Tech Log
4th Aug 2011, 10:58
Replies: 1,998
Views: 511,851
Posted By JD-EE

That is EXACTLY why I have not filtered out some...

That is EXACTLY why I have not filtered out some of the more irritating posters here. They have experience I do not have. And the annoyance is more at their going way out on a limb, sawing away at...
Forum: Tech Log
4th Aug 2011, 10:46
Replies: 1,998
Views: 511,851
Posted By JD-EE

xcitation, might a 10 degree nose down attitude...

xcitation, might a 10 degree nose down attitude give them a rather distinct impression they are in a dive, even after asking for full nose up? He asked for nose up. Nothing happened. He asked for...
Forum: Tech Log
4th Aug 2011, 10:31
Replies: 1,998
Views: 511,851
Posted By JD-EE

DozyWannabee, do you see an anti-correlation? He...

DozyWannabee, do you see an anti-correlation? He asks for nose up and gets a very significant nose down. When that happens, what does he think? Does his entire mental process derail, especially if he...
Forum: Tech Log
3rd Aug 2011, 22:42
Replies: 1,998
Views: 511,851
Posted By JD-EE

bearfoil, look at the graphs again. Is the real...

bearfoil, look at the graphs again. Is the real root cause the lack of a real AoA indication in the cockpit? That is rather hard for pilots to mentally reject. The AoA warning was easy for them to...
Forum: Tech Log
3rd Aug 2011, 22:37
Replies: 1,998
Views: 511,851
Posted By JD-EE

Dozy "@JD-EE - I'm pretty sure that "Assiette"...

Dozy "@JD-EE - I'm pretty sure that "Assiette" can refer to pitch or trim, but in this case I think it means pitch. If it is a valid trace then yes, the nose fell down, but I suspect not in a...
Forum: Tech Log
3rd Aug 2011, 22:28
Replies: 1,998
Views: 511,851
Posted By JD-EE

Dozy "Well, this is the thing - we've had two...

Dozy "Well, this is the thing - we've had two explanations doing the rounds - one, that the stall warning is inhibited by a software setting and the other is that once the airspeed has fallen that...
Forum: Tech Log
3rd Aug 2011, 22:22
Replies: 1,998
Views: 511,851
Posted By JD-EE

Lone - "I empathize." To say the least....

Lone - "I empathize."

To say the least. Those guys are under incredible pressure. And based on what I see here with people apparently missing important clues they must be working VERY hard.
Forum: Tech Log
3rd Aug 2011, 21:58
Replies: 1,998
Views: 511,851
Posted By JD-EE

DozyWannabe - on page 114 look down to the 8th...

DozyWannabe - on page 114 look down to the 8th set of graphical elements, dark green titled "ASSIETTE (>D- A cabrer)[DA]". What is it?

When I try to translate it this seems to be an aircraft pitch...
Forum: Tech Log
3rd Aug 2011, 21:44
Replies: 1,998
Views: 511,851
Posted By JD-EE

airtren, in precisely what way were the stall...

airtren, in precisely what way were the stall warnings when the AoA was absurdly high in any way improper? The cessation of the stall warnings was improper; but, the warnings themselves were very...
Forum: Tech Log
3rd Aug 2011, 05:14
Replies: 1,998
Views: 511,851
Posted By JD-EE

airtren, if the captain had removed a potentially...

airtren, if the captain had removed a potentially critical bit of documentation from the cockpit to study it in the back that's rather reprehensible on his part. The fact that there is no spare that...
Forum: Tech Log
3rd Aug 2011, 04:28
Replies: 1,998
Views: 511,851
Posted By JD-EE

DozyWannabee, commenting to BOAC...

DozyWannabee, commenting to BOAC (http://www.pprune.org/tech-log/456874-af-447-thread-no-5-a-61.html#post6611459) you mention Birgenair. I think Takata rather noticed something I didn't chiefly...
Showing results 1 to 35 of 83
 
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