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Search: Posts Made By: underfire
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Forum: Rumours & News
13th May 2014, 02:36
Replies: 11,831
Views: 24,305,493
Posted By underfire

While this site relates to pilots, there are...

While this site relates to pilots, there are other websites and group discussion forums with folks that do this sort of underwater work full time. (thankfully, most are closed, and by invitation...
Forum: Rumours & News
10th May 2014, 18:23
Replies: 11,831
Views: 24,305,493
Posted By underfire

Why the attitude? There were many, many...

Why the attitude?

There were many, many vessels with TPL.

Just as the search pattern was noted before, 3 hours to turn rather than search a racetrack. Again, very intuative, and very common...
Forum: Rumours & News
10th May 2014, 17:10
Replies: 11,831
Views: 24,305,493
Posted By underfire

What amazes me is how this entire search effort...

What amazes me is how this entire search effort has been run and has fallen apart.

Some common sense, and easily determined processes have been completely ignored.

As an example, with a pinger...
Forum: Rumours & News
17th Apr 2014, 19:50
Replies: 11,831
Views: 24,305,493
Posted By underfire

In regards to David Mearns comments: In a...

In regards to David Mearns comments:

In a typical search situation, you would be mapping the bottom with towed arrays. You get a wide area of coverage, with decent resolution. Hopefully, they were...
Forum: Rumours & News
17th Apr 2014, 16:30
Replies: 11,831
Views: 24,305,493
Posted By underfire

From the news today... "In an interview with...

From the news today...
"In an interview with the Wall Street Journal on Wednesday, Mr Abbott said if the Bluefin-21 underwater drone scanning the Indian Ocean's seabed in the search area fails to...
Forum: Rumours & News
16th Apr 2014, 20:19
Replies: 11,831
Views: 24,305,493
Posted By underfire

The BF 21 is the civilian version, which is why...

The BF 21 is the civilian version, which is why PHI is involved.

The capabilites of PHI speak for themselves.

EDIT: Due to the depth, all of the systems on the fish are oil filled, replacing...
Forum: Rumours & News
16th Apr 2014, 17:47
Replies: 11,831
Views: 24,305,493
Posted By underfire

I designed part of the Bluefin 21 guidance...

I designed part of the Bluefin 21 guidance system.

I also designed one for telecommunication cable mapping with a sidescan, mag, and sub-bottom profiler.

We do this stuff everyday, not once a...
Forum: Rumours & News
16th Apr 2014, 15:10
Replies: 11,831
Views: 24,305,493
Posted By underfire

Looks like the mission was aborted a 3rd time... ...

Looks like the mission was aborted a 3rd time...

They should be simply flying the fish at its working depth, and forget skimming the bottom.

The sidescan can fly quite a bit higher and still...
Forum: Rumours & News
15th Apr 2014, 00:50
Replies: 11,831
Views: 24,305,493
Posted By underfire

okay, the fish has a max depth, but the array...

okay, the fish has a max depth, but the array onboard has a different depth for the scanforom the sidescan, as well as the mag or sub-bottom profiler.

the fish can auto fly above the bottom...
Forum: Rumours & News
14th Apr 2014, 20:31
Replies: 11,831
Views: 24,305,493
Posted By underfire

International "Law of Finds" covers this very...

International "Law of Finds" covers this very well.
Looking at the taphonomy, the Ocean surface currents will keep any debris very near to the source, small movements towards the East, but wind...
Forum: Rumours & News
14th Apr 2014, 15:00
Replies: 11,831
Views: 24,305,493
Posted By underfire

BF is autonoumous. You can input whatever...

BF is autonoumous. You can input whatever programmed course you want, and let it go.
It has an IRU, and once underwater, GPS will not work. You may drop pingers bounding a larger area, this way,...
Forum: Rumours & News
11th Apr 2014, 21:41
Replies: 11,831
Views: 24,305,493
Posted By underfire

IF the GSF Explorer is enroute, it is what is...

IF the GSF Explorer is enroute, it is what is underneath that counts...

http://i60.tinypic.com/kq8t0.jpg
Forum: Rumours & News
10th Apr 2014, 17:26
Replies: 11,831
Views: 24,305,493
Posted By underfire

The BF21 can be equipped with a mag and sidescan...

The BF21 can be equipped with a mag and sidescan with working depth of 6000M.

You can tow an array at any depth you want, as long as you have cable...
Forum: Rumours & News
9th Apr 2014, 21:03
Replies: 11,831
Views: 24,305,493
Posted By underfire

It is very important for the operator to know...

It is very important for the operator to know exactly where the towfish is in relation to the surface vessel. The computer system onboard calcs the towspeed, cable length, catenary arc in the cable,...
Forum: Rumours & News
9th Apr 2014, 20:53
Replies: 11,831
Views: 24,305,493
Posted By underfire

Another reason for the wing, it isolates the...

Another reason for the wing, it isolates the towfish from the towcable. Harmonics from the cable has a significant effect.

Hydrodynamic drag increases as a square function of velocity, so...
Forum: Rumours & News
9th Apr 2014, 20:19
Replies: 11,831
Views: 24,305,493
Posted By underfire

I am curious why OS continues all by herself? ...

I am curious why OS continues all by herself?
The other search area has 6 search vessels..

http://i62.tinypic.com/11iztis.jpg
Forum: Rumours & News
9th Apr 2014, 19:55
Replies: 11,831
Views: 24,305,493
Posted By underfire

RS, I am quite certain it is not the Capt driving...

RS, I am quite certain it is not the Capt driving the search pattern parameters. Why would I mention your name?

Coding course paths for surface and subsurface vessels is much the same as a coded...
Forum: Rumours & News
9th Apr 2014, 19:36
Replies: 11,831
Views: 24,305,493
Posted By underfire

The Blufin 21 platform can be equipped with a PL,...

The Blufin 21 platform can be equipped with a PL, no problem. There is at least one from the US Navy on Ocean Shield.

Currently, it can be also be outfitted with sidescan, magnetometer, and...
Forum: Rumours & News
9th Apr 2014, 19:30
Replies: 11,831
Views: 24,305,493
Posted By underfire

"Analysis by the British satellite company...

"Analysis by the British satellite company Inmarsat and the UK's Air Accidents Investigation Branch (AAIB) was cited on Monday by the Malaysian prime minister as the source of information that has...
Forum: Rumours & News
9th Apr 2014, 19:14
Replies: 11,831
Views: 24,305,493
Posted By underfire

They MAY do this if they want to make a tighter...

They MAY do this if they want to make a tighter turn, but you really try to avoid this when towing, as you lose all the time turning and not searching.
Typically you run a racetrack type of search...
Forum: Rumours & News
9th Apr 2014, 18:39
Replies: 11,831
Views: 24,305,493
Posted By underfire

It was the analysis of the INMARSAT data that...

It was the analysis of the INMARSAT data that lead them to the current search area, much the same as AF447.
Forum: Rumours & News
9th Apr 2014, 14:53
Replies: 11,831
Views: 24,305,493
Posted By underfire

I42, They will use as much cable as possible...

I42,

They will use as much cable as possible and when mowing the lawn, will have to make large turns. The towed array is rated with a static depth, so the dynamic load of the towed speed and turn...
Forum: Rumours & News
7th Apr 2014, 20:35
Replies: 11,831
Views: 24,305,493
Posted By underfire

3 separate search areas By itself OCEAN...

3 separate search areas


By itself
OCEAN SHIELD
Position Recorded on:
2014-04-07 18:00:28 (UTC)
Lat/Lon: -20.88497 / 104.1175

with 2 other vessels in S search area
Forum: Rumours & News
7th Apr 2014, 17:39
Replies: 11,831
Views: 24,305,493
Posted By underfire

AIS Marine Traffic...

AIS Marine Traffic (http://www.marinetraffic.com/en/)

With Marine Traffic, you can see the ships, and by clicking on them, show their tracks...

(I manually added the ship names as you can only...
Forum: Rumours & News
6th Apr 2014, 19:10
Replies: 11,831
Views: 24,305,493
Posted By underfire

AUS ADV Ocean Shield has been sent to the area,...

AUS ADV Ocean Shield has been sent to the area, and has actually reported a pinger signal...

Marine Traffic (http://www.marinetraffic.com/en/ais/details/ships/9628374/vessel:OCEAN_SHIELD)

It...
Forum: Rumours & News
15th Mar 2014, 22:08
Replies: 11,831
Views: 24,305,493
Posted By underfire

The US Navy 5th fleet always has a carrier group...

The US Navy 5th fleet always has a carrier group covering the Persian Gulf, Red Sea, Arabian Sea, and parts of the Indian Ocean.
Forum: Rumours & News
13th Mar 2014, 10:55
Replies: 11,831
Views: 24,305,493
Posted By underfire

Forget conspiracies, look at reality. Ops...

Forget conspiracies, look at reality.

Ops Centers for airlines, ac manufacturers, and of course governments, monitor ac systems real-time or near real time.

Currently, due to security issues,...
Forum: Rumours & News
13th Mar 2014, 06:32
Replies: 11,831
Views: 24,305,493
Posted By underfire

From this article on the 787 real time Operations...

From this article on the 787 real time Operations Center, while it is for the 787, right at the end of the video, they note that the Center also monitors the 777 real time, but just not as much...
Forum: Rumours & News
9th Mar 2014, 05:00
Replies: 11,831
Views: 24,305,493
Posted By underfire

The FDR has a pinger. It is strange that this has...

The FDR has a pinger. It is strange that this has not been mentioned.
Forum: Rumours & News
8th Mar 2014, 09:04
Replies: 11,831
Views: 24,305,493
Posted By underfire

3miles, FR24 is just a group of people with...

3miles,

FR24 is just a group of people with ADS-B recievers that feed the system...you may have 400 covering an area or 1...

Manadasytem, yes, 777 can be equipped to be monitored by Boeing...
Forum: Rumours & News
8th Mar 2014, 08:48
Replies: 11,831
Views: 24,305,493
Posted By underfire

Given the ADSB system on an aircraft, I would...

Given the ADSB system on an aircraft, I would doubt reliability on continued broadcast during an event.
Forum: Rumours & News
8th Mar 2014, 08:19
Replies: 11,831
Views: 24,305,493
Posted By underfire

gasflow, there is also the 'pinger' is part of...

gasflow, there is also the 'pinger' is part of the 'black box' which is located near the top of the fuselage back near the beginning of the tail section. It is meant to survive an incident...
Showing results 1 to 32 of 32


 
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