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Search: Posts Made By: shawk
Showing results 1 to 21 of 21
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Forum: Rumours & News
18th Mar 2014, 00:31
Replies: 11,831
Views: 24,150,854
Posted By shawk

Electronics in cold ambient temperatures

Aviation electronics are specified to -55C, non-condensing atmosphere.
In the case of a hull breach and sudden drop in temperature, the humidity in the atmosphere will be condensing and could coat...
Forum: Rumours & News
17th Mar 2014, 23:39
Replies: 11,831
Views: 24,150,854
Posted By shawk

If an oxygen bottle failed in the avionics bay...

If an oxygen bottle failed in the avionics bay and pierced the hull, would the temperature in the bay fall to -40C quickly?
How well would the electronics work at -40C?
Would the humidity in the...
Forum: Rumours & News
14th Mar 2014, 21:20
Replies: 11,831
Views: 24,150,854
Posted By shawk

Via CNN: A classified analysis of electronic...

Via CNN:

A classified analysis of electronic and satellite data, conducted by the United States and Malaysian governments, calculates Malaysia Airlines Flight 370 likely crashed into the Indian...
Forum: Rumours & News
13th Mar 2014, 19:55
Replies: 11,831
Views: 24,150,854
Posted By shawk

Yes, misread M for H in the abstract. The NIH...

Yes, misread M for H in the abstract. The NIH number is 8.6 hours at -20C with two layers of loose clothing. Recovery time after several hours of -20C is fairly lengthly.
Forum: Rumours & News
13th Mar 2014, 16:04
Replies: 11,831
Views: 24,150,854
Posted By shawk

If both pilots were unconscious due to hypoxia,...

If both pilots were unconscious due to hypoxia, does this mean that the flight deck oxygen masks were fed from a single, common source?
Forum: Rumours & News
11th Mar 2014, 00:59
Replies: 11,831
Views: 24,150,854
Posted By shawk

From CNBC World: Updates on MH370: Malaysian...

From CNBC World:
Updates on MH370: Malaysian authorities have postponed news conferences indefinitely.
Forum: Rumours & News
9th Mar 2014, 15:42
Replies: 11,831
Views: 24,150,854
Posted By shawk

False passports

Via BBC:
When an Air India plane crashed in Mangalore in 2010 en route from Dubai, with the loss of 158 lives, as many 10 fraudulent passports were recovered.
Forum: Tech Log
9th Jun 2009, 15:30
Replies: 4,593
Views: 3,280,342
Posted By shawk

Thanks, ELAC. :ok:

Thanks, ELAC. :ok:
Forum: Rumours & News
18th Jan 2009, 22:06
Replies: 2,015
Views: 1,057,751
Posted By shawk

AP: flight recorder data

An update on the flight recorders from AP.
Forum: Rumours & News
27th Jul 2008, 00:04
Replies: 1,109
Views: 378,578
Posted By shawk

I believe that Boeing is aware of the potential...

I believe that Boeing is aware of the potential damage from leaking oxygen bottles and other pressurized sources in the 747 cargo hold.
The 747-8 has a new and interesting pressure relief valve to...
Forum: Rumours & News
25th Jul 2008, 12:54
Replies: 205
Views: 61,570
Posted By shawk

A tip of the hat all around.

A tip of the hat all around.
Forum: Rumours & News
17th May 2008, 18:13
Replies: 3,239
Views: 1,135,026
Posted By shawk

I'd speculate / assume / guess that the CVR has a...

I'd speculate / assume / guess that the CVR has a steep low frequency cutoff to improve voice intelligibility.
Forum: Rumours & News
17th May 2008, 16:42
Replies: 3,239
Views: 1,135,026
Posted By shawk

The profoundly toxic Honeywell Aerospace site...

The profoundly toxic Honeywell Aerospace site lists the Digital Flight Data Acquisition Unit used in the Boeing 777....
Forum: Rumours & News
17th May 2008, 09:19
Replies: 3,239
Views: 1,135,026
Posted By shawk

Thanks soem dood. I oversimplified my...

Thanks soem dood.
I oversimplified my description of the performance of a switched channel A/D by just combining the Nyquest minimum sample rate and the switching rate to sample two separate fuel...
Forum: Rumours & News
16th May 2008, 20:23
Replies: 3,239
Views: 1,135,026
Posted By shawk

Good analysis, johngreen. A spring loaded...

Good analysis, johngreen.
A spring loaded diaphragm, such as found in a non-return valve, would make a very interesting fluid motor.
A drawing of the valve would be very helpful, as would valve...
Forum: Rumours & News
14th May 2008, 19:33
Replies: 3,239
Views: 1,135,026
Posted By shawk

You may have experience with a water faucet that...

You may have experience with a water faucet that sometimes makes a loud, low rumble or rattle that is accompanied by a small volume of water that comes out of the tap in discrete spurts of water....
Forum: Rumours & News
14th May 2008, 15:18
Replies: 3,239
Views: 1,135,026
Posted By shawk

Fluidic resonance in a tuned circuit tends to be...

Fluidic resonance in a tuned circuit tends to be low frequency and is far less likely to be attenuated by the aircraft structure.
Interestingly, this noise would be very similar to tire rumble at...
Forum: Rumours & News
13th May 2008, 13:10
Replies: 3,239
Views: 1,135,026
Posted By shawk

From the report: "In addition, work has commenced...

From the report: "In addition, work has commenced on developing a more complete understanding of the dynamics of the fuel as it flows from the fuel tank to the engine."

This may suggest a...
Forum: Rumours & News
6th May 2008, 13:58
Replies: 3,239
Views: 1,135,026
Posted By shawk

The report notes that the fuel pumps show signs...

The report notes that the fuel pumps show signs of cavitation damage.
How would engine core icing cause fuel pump cavitation?
Forum: Rumours & News
28th Feb 2008, 21:39
Replies: 3,239
Views: 1,135,026
Posted By shawk

Acoustical piping resonance

Probably off topic and very unlikely, shrug.
Unusual acoustical standing waves in piping can restrict fuel flow. These are very difficult to recreate or analyze, as they leave little evidence. These...
Forum: Rumours & News
20th Jan 2008, 02:25
Replies: 949
Views: 424,776
Posted By shawk

Are there any credible reports of unusual...

Are there any credible reports of unusual maintenance activity on the BA 777 fleet or unusual fuel quality analysis on aircraft refueled in China after the accident?
Showing results 1 to 21 of 21


 
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