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Search: Posts Made By: CogSim
Showing results 1 to 35 of 91
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Forum: Rumours & News
11th Feb 2020, 21:28
Replies: 76
Views: 72,510
Posted By CogSim

I'm no aircraft designer, but the direction of...

I'm no aircraft designer, but the direction of the folding wing puzzles me. Wouldn't it be better for the wing to fold down so airflow in flight can keep it securely locked?
Forum: Rumours & News
2nd Apr 2015, 03:04
Replies: 3,543
Views: 5,590,148
Posted By CogSim

Independent events

Excellent post. Any sensible response to this event has to come as a self instituted change in the way we function not as some cursory change in SOP.

Having said that I have been thinking about...
Forum: Rumours & News
27th Mar 2015, 00:44
Replies: 3,543
Views: 5,590,148
Posted By CogSim

What fails? The sensor? Like everything else,...

What fails? The sensor? Like everything else, there would be redundancy. Back up sensor, that sort of thing. My point is having something like that would make it virtually impossible for *one*...
Forum: Rumours & News
15th Mar 2014, 11:18
Replies: 11,831
Views: 24,205,541
Posted By CogSim

The altitude excursion data was attributed to...

The altitude excursion data was attributed to leaked Malaysian PSR returns on the unidentified target (presumed MH370) at IGARI sometime shortly after transponder switched off.
Forum: Rumours & News
15th Mar 2014, 10:47
Replies: 11,831
Views: 24,205,541
Posted By CogSim

Update

A quick update to keep us focused:

Official Confirmed

01:07 Last routine engine data transmission
XX:XX ACARS disabled
01:17 Sign off Subang ATC
01:21 Xpndr switched off (near IGARI)
01:21...
Forum: Rumours & News
15th Mar 2014, 02:20
Replies: 11,831
Views: 24,205,541
Posted By CogSim

Summary

A quick summary to keep us focused:

Official Confirmed

01:07 Last routine engine data transmission
01:17 Sign off Subang ATC
01:21 SSR lost (near IGARI)

Official Unconfirmed
Forum: Rumours & News
15th Mar 2014, 00:20
Replies: 11,831
Views: 24,205,541
Posted By CogSim

I don't know where all this "gentle turn"...

I don't know where all this "gentle turn" business is coming from. Officially, we don't have any confirmation that the aircraft deviated from its track.

All the unofficial leaks so far have...
Forum: Rumours & News
13th Mar 2014, 19:03
Replies: 11,831
Views: 24,205,541
Posted By CogSim

In other words, you can shut down one engine and...

In other words, you can shut down one engine and extend the range by upto 330 minutes?
Forum: Rumours & News
13th Mar 2014, 17:20
Replies: 11,831
Views: 24,205,541
Posted By CogSim

New search grid

http://i.imgur.com/FVG3C69.jpg
Source: The Telegraph (http://www.telegraphindia.com/1140313/jsp/frontpage/story_18076946.jsp)
Forum: Rumours & News
11th Mar 2014, 18:22
Replies: 11,831
Views: 24,205,541
Posted By CogSim

If this is the case, they should also know the...

If this is the case, they should also know the transponder is (switched?) off and unable to make radio contact. At this point, I humbly submit, it becomes a high risk target.
Forum: Rumours & News
11th Mar 2014, 17:03
Replies: 11,831
Views: 24,205,541
Posted By CogSim

If this is indeed the case, why would you not...

If this is indeed the case, why would you not scramble?
Forum: Airlines, Airports & Routes
1st Mar 2013, 18:26
Replies: 8
Views: 2,638
Posted By CogSim

Why do airlines exist?

Airline industry ranks consistently at the bottom part of the list of industries by profit margins. There are very few airlines that have been profitable over a long period of time. There are more...
Forum: Tech Log
9th Aug 2011, 22:38
Replies: 1,998
Views: 509,972
Posted By CogSim

Thanks for the clarification Shadoko. Why not...

Thanks for the clarification Shadoko. Why not just use descend in the translation then?
Forum: Tech Log
9th Aug 2011, 22:21
Replies: 1,998
Views: 509,972
Posted By CogSim

But its the PNF who has asked for the climb. I...

But its the PNF who has asked for the climb. I think the Captain is overruling the PNF here.
Forum: Tech Log
9th Aug 2011, 21:55
Replies: 1,998
Views: 509,972
Posted By CogSim

Climb and "Go down"

Consider this bit of conversation on page 90 of the report:

Watch your speed
Watch your speed
Okay, okay okay I’m
going back down
Stabilise
Yeah
Go back down
Forum: Tech Log
25th Jul 2011, 22:42
Replies: 1,998
Views: 509,972
Posted By CogSim

New report

The BEA to publish another report on Friday?
Link...
Forum: Tech Log
15th Jul 2011, 17:23
Replies: 1,998
Views: 509,972
Posted By CogSim

Shuttle Flight Computer

I apologize if this has already been posted.

For safety critical system design folks:

Spaceflight Now | STS-135 Shuttle Report | Astronauts restart computer; Obama to call Atlantis today...
Forum: Tech Log
29th Jun 2011, 00:09
Replies: 1,069
Views: 280,363
Posted By CogSim

My naive (non software literate) attempt at...

My naive (non software literate) attempt at defining the SE concept of abstraction. Nothing more. But lets face it, even if he/she needed to, what chance has a pilot got at understanding what goes on...
Forum: Tech Log
28th Jun 2011, 22:38
Replies: 1,069
Views: 280,363
Posted By CogSim

Software Engineers will tell you its Abstraction....

Software Engineers will tell you its Abstraction. You don't need to know how the transmission works to drive to work everyday.

The bean counters will tell you its statistics. How many times have...
Forum: Tech Log
27th Jun 2011, 04:36
Replies: 1,069
Views: 280,363
Posted By CogSim

I pity the pilot in charge of this unfortunate...

I pity the pilot in charge of this unfortunate task. :\
Forum: Tech Log
27th Jun 2011, 04:09
Replies: 1,069
Views: 280,363
Posted By CogSim

From a pilot's point of view, I can understand...

From a pilot's point of view, I can understand loosing time or even being fixated and not physically doing what I'm supposed to do. In the case of AF447, however, BEA report suggests a persistent...
Forum: Tech Log
26th Jun 2011, 05:35
Replies: 1,069
Views: 280,363
Posted By CogSim

This was first brought to attention by takata in...

This was first brought to attention by takata in this post (http://www.pprune.org/5031377-post2542.html).

Airliners.net post with reordered ACARS message list....
Forum: Tech Log
22nd Jun 2011, 16:27
Replies: 1,069
Views: 280,363
Posted By CogSim

Peter H

Thanks for the link. Downloading it now.
Forum: Tech Log
22nd Jun 2011, 04:52
Replies: 1,069
Views: 280,363
Posted By CogSim

For pitot redesign folks: Shaved bat wings...

For pitot redesign folks:

Shaved bat wings show sensory hairs help manage flight (http://arstechnica.com/science/news/2011/06/bats-wings-have-air-flow-sensors.ars)

Edit: I have'nt gotten hold...
Forum: Tech Log
15th Jun 2011, 21:24
Replies: 1,069
Views: 280,363
Posted By CogSim

The movement of THS; 10 degrees in 60 seconds (if...

The movement of THS; 10 degrees in 60 seconds (if continuous) strikes me as very very gradual. In my mind this fits the bill of inadvertent NU input while trying to correct for right roll (especially...
Forum: Tech Log
13th Jun 2011, 22:40
Replies: 2,070
Views: 613,567
Posted By CogSim

More like "if you go out of the certification...

More like "if you go out of the certification specifications ... you can have no weird outcomes"

Safety critical systems are designed to perform well beyond the certification specifications (as we...
Forum: Tech Log
7th Jun 2011, 21:17
Replies: 2,070
Views: 613,567
Posted By CogSim

Thank you for the excellent post A33Zab ...

Thank you for the excellent post A33Zab



Is there a threshold of displacement for the sidestick before inputs are valid? How slight is slight? In the a/c I drive, stick neutral and elevator...
Forum: Tech Log
3rd Jun 2011, 13:15
Replies: 2,070
Views: 613,567
Posted By CogSim

This a/c seems to have somehow remained stalled...

This a/c seems to have somehow remained stalled from FL380 to at least FL100 which in itself is quite a feat. But, if I were to put my money on it, I'd say the Pi/4 angle at impact for a machine with...
Forum: Tech Log
2nd Jun 2011, 19:50
Replies: 2,070
Views: 613,567
Posted By CogSim

From the report: The question is has...

From the report:



The question is has the system rejected a/s (60 kt) by this point? If so, why is it still being honored by AoA logic?

"When they are below 30 kt, the speed values...
Forum: Tech Log
1st Jun 2011, 19:44
Replies: 2,070
Views: 613,567
Posted By CogSim

Interesting take:

Interesting take:
Forum: Tech Log
30th May 2011, 01:57
Replies: 2,070
Views: 613,567
Posted By CogSim

With all due respect, the richness of this forum...

With all due respect, the richness of this forum (and others for that matter), stems from the tension that exists between the 'ignorant' and the 'knowledgeable'. I for one have learnt a great deal...
Forum: Tech Log
29th May 2011, 20:15
Replies: 2,070
Views: 613,567
Posted By CogSim

This post is to retract my earlier assessment...

This post is to retract my earlier assessment that the initial response from PF may have been wrong. After spending a couple of days studying the report, I'm not sure anymore. It is unfortunate that...
Forum: Tech Log
29th May 2011, 05:33
Replies: 2,070
Views: 613,567
Posted By CogSim

The last recorded values were a vertical speed of...

The last recorded values were a vertical speed of -10,912 ft/min, a ground speed of 107 kt, pitch attitude of 16.2 degrees nose-up, roll angle of 5.3 degrees left and a magnetic heading of 270...
Forum: Tech Log
28th May 2011, 23:17
Replies: 2,070
Views: 613,567
Posted By CogSim

Thank you. At least the PNF was showing enough...

Thank you. At least the PNF was showing enough awareness to respect the stall warning.
Forum: Tech Log
28th May 2011, 23:04
Replies: 2,070
Views: 613,567
Posted By CogSim

in this statement computer = auto-trim and stall...

in this statement computer = auto-trim and stall warning disappearing/reappearing below/above 60kt threshold.

What I perhaps should have said is the "computer" as defined above, was making it...
Showing results 1 to 35 of 91
 
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