PLAN Aircraft Carrier programme...(Closed)

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Jeff Head

General
Registered Member
I think it was shown on our forum around the time Liaoning was commissioned. Was that lost with the loss of the previous CV thread?
Could be.

Either way, I had not seen it before and I liked the interview and the Admiral's disposition and answers. Of course, for me, it helped that is was all in English too.

Wish we could see more of that type of stuff.
 

Blackstone

Brigadier
Well, this is simply too far fetched IMHO. Given the status of that ship just last month, I see no way that vessel, as a completed carrier, could be launched this year. Just no way.

Unless there is another, completely hidden ship somewhere that we do not know about.
You mean China stole our invisibility cloak technology too?

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In the movie "Predator," an alien uses a cloaking device to hide in plain sight, but the effect is far from perfect: The alien's attempt to conceal itself is thwarted by distortions of light bending around it. Now, researchers have built an ultrathin "invisibility cloak" that gets around this problem, by turning objects into perfect, flat mirrors.

Invisibility cloaks are designed to bend light around an object, but materials that do this are typically hard to shape and
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— if you walk around the cloaked object, for instance, it's visible. But a new cloak avoids that problem, and is thin and flexible enough to be wrapped around an object of any shape, the researchers said. It can also be "tuned" to match whatever background is behind it — or can even create illusions of what's there, they added.



Led by Xiang Zhang, director of materials science at Lawrence Berkeley National Laboratory, the group constructed a thin film consisting of a 50-nanometer-thick layer of magnesium fluoride topped by a varying pattern of tiny, brick-shaped gold antennas, each 30 nanometers thick. (For comparison, an average strand of human hair is about 100,000 nanometers wide.) The "bricks" were built in six different sizes, ranging from about 30 to 220 nanometers long and 90 to 175 nanometers wide. [
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]

The scientists then wrapped up a tiny, irregularly shaped object measuring about 36 microns across, or a bit more than one-thousandth of an inch. Shining a light, with a wavelength of 730 nanometers, or near-infrared, they found that it reflected back almost perfectly. The
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still bounced off the object, but without revealing where the object was — as though there were just a flat mirror in its place, the researchers said.

The tiny object appeared to be invisible because the gold antennas controlled the scattering of the light that reflects off of it, the scientists explained. Ordinarily, light reflecting off an object (even a glass mirror) will scatter at least a little, especially if the shape is irregular. The
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will also sometimes create interference patterns. As a result, reflected light appears as colors (when some is absorbed), or reflection, depending on the object.

The new
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changes that: The gold bricks reflect the light in such a way that the light's phase and frequency are both preserved. (Phase is an angle measurement that tells you how far along a light wave you are; two waves 180 degrees out of phase cancel out.) The ultrathin cloak creates an effect that makes it seem like the light were hitting a perfect mirror and the cloak and object weren't even there. Even the edges are invisible with the new device, the researchers said.

With the proper tuning of the gold bricks, it's not hard to make the reflected light look like anything you want — either the background of the object (a floor, for example) or something else entirely, Zhang told Live Science. If the cloak were big enough, theoretically, you could drape it over anything. "You could cover a tank with it and make it look like a bicycle," he added.

Although the cloak Zhang and his colleagues made is tuned to hide objects from light reflected at a wavelength of 730 nanometers, there's no reason it can't work with multiple wavelengths, Zhang said. [
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The reflection trick also works from any angle, and the
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— it can be wrapped around anything, and the effect still works. It's also thin and light, according to the researchers.

But there is one disadvantage: If Harry Potter were wearing this cloak, he'd have to stay still for it to work, since the tuning has to be matched to the background.

Andrea Alù, an associate professor of electrical engineering at the University of Texas at Austin, has done extensive research on cloaking systems. He is skeptical that scientists can
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Zhang describes.

"They had a small object, a little bump," Alù told Live Science. "With a larger object, I can't take advantage of that … when I illuminate it, a portion is not illuminated; it's in shadow." As such, the illusion of the perfect reflector would be broken, he said.

Even so, the new findings show you can manipulate how light reflects using nanometer-scale structures on a thin surface. "The beauty of the paper is that you can control the reflection surface at the sub-wavelength scale," Alù said.

Zhang said the cloaking technology's reflectivity offers another application: displays. Right now, any big projection (e.g., a movie in a theater) has to use a relatively flat surface. But if the phase and frequency of the light reflected from it could be finely controlled, that problem could go away. A projection surface could be any shape, and the resulting picture would not be distorted.

Zhang added that this kind of material has been fabricated before, and that a next step would be to make a lot of it at industrial scales, tuning the antennas to different wavelengths of light.
 

JayBird

Junior Member
Well, this is simply too far fetched IMHO. Given the status of that ship just last month, I see no way that vessel, as a completed carrier, could be launched this year. Just no way.

Unless there is another, completely hidden ship somewhere that we do not know about.

Original source of that article is some tabloid newspaper with a history of sensational false stories. No one in chinese forum believe such a story anyway. pop3 says nothing is real in that article other than the Chinese words written is real chinese language.:D
 

Jeff Head

General
Registered Member
...source of that article is some tabloid newspaper with a history of sensational false stories. No one in chinese forum believe such a story.:D
Well, I never said anyone believed it, Jaybird. I simply responded to what was posted here on SD.

Sounds like myself and those folks on the other forum agree.
 

Richard Santos

Captain
Registered Member
Well, this is simply too far fetched IMHO. Given the status of that ship just last month, I see no way that vessel, as a completed carrier, could be launched this year. Just no way.

Unless there is another, completely hidden ship somewhere that we do not know about.

It is possible to make a partial major warship hull that is less than 50% structurally complete, missing several decks, and minus major sections such as the entire bow or stern, watertight and launch it. It has been done before. The reasons for doing so includes the need to vacate the building way or the need to complete the hull at a different yard. In one case it was attempted to try to evacuate a unfinished battleship hull before the yard is occupied by the Germans. I think if the Chinese really wants to launch that hull by year's end, it can be done.

Although given the slow pace and methodical approach the Chinese had adopted for their carrier program, I don't see why the Chinese would wish suddenly do something so precipitous for no strong, program related reason.
 

Jeff Head

General
Registered Member
It is possible to make a partial major warship hull that is less than 50% structurally complete, missing several decks, and minus major sections such as the entire bow or stern, watertight and launch it. It has been done before.
In the last 10+ years I have not seen the Chinese ever do this on any major program,

I have seen India do it and for obvious reasons (some of which you stated here.

Although given the slow pace and methodical approach the Chinese had adopted for their carrier program, I don't see why the Chinese would wish suddenly do something so precipitous for no strong, program related reason.
Doing so is tantamount to admitting there is a major problem, but getting it launched is less painful than not doing so.

I see no reason whatsoever to move the Chinese to do this...ergo, it is absolutely far fetched.

Besides, with that vessel supposedly being a major carrier, and not even being up to the hanger deck just a few weeks ago...I simply do not see it happening in any case
 

Hendrik_2000

Lieutenant General
Our friend SOC from IHS Jane of the opinion that the mystery ship is in fact Carrier Anybody has subscription on Jane Defence for the full article ? Here is the abridge version

Sean O’Connor, “
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,” IHS Jane’s Defence Weekly, 24 September 2015.


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Key Points

  • An unidentified hull in an advanced state of construction at Dalian shipyard could be China’s first indigenous aircraft carrier
  • While a conclusive identification of the hull as an aircraft carrier cannot be made until work is observed on the upper decks and potential flight deck, the slow pace of assembly and outline suggests a military hull under construction
Satellite imagery suggests that China may be building its first aircraft carrier at Dalian shipyard in northern China. …

Airbus Defence and Space imagery captured on 22 September suggests that the possible carrier is under construction in the dry dock associated with the refit and repair of Liaoning (CV16), the Soviet-era Kuznetsov-class carrier acquired from Ukraine that is now in People’s Liberation Army Navy (PLAN) service.

The new hull, first noted under construction in imagery captured on 10 March, is in an advanced state of assembly. … …

… Imagery from 22 September shows a lengthened aft section and expanded bow. The hull is currently assessed to have a length of about 240 m and a beam of about 35 m. The incomplete bow suggests a length of at least 270 m for the completed hull.

Given the incomplete nature of the upper decks, definitive identification of the Dalian hull as the first so-called ‘001A’ aircraft carrier is not possible. However, the dimensions of the visible object closely match the waterline measurements of 270×35 m for Liaoning. Furthermore, Kuznetsov underwent a similar assembly process at Nikolayev shipyard in the mid-1980s; a significant portion of the lower hull was completed before work began on the flight decks and island, resulting in an incomplete hull similar to that seen at Dalian on 22 September. …

Chinese media has previously reported that construction of the 001A aircraft carrier, an improved design based on Liaoning, began at Dalian shipyard in December 2013. Initial efforts likely centred on component preparation. Analysis of imagery captured at various points in 2014 revealed no outward evidence of hull assembly within a dry dock.

If not the 001A hull, the incomplete object possibly represents a new class of amphibious assault ship or helicopter carrier, as the comparatively slow pace of assembly suggests a military rather than commercial hull.

A significant degree of modular assembly employed in the production of large commercial hulls results in rapid completion times. The previous hull launched from the dry dock in question, a 330×60 m commercial vessel, took less than nine months to complete. Work on the comparatively smaller hull currently under assembly has been in progress for six months, the slower pace of work suggesting a more complicated internal layout than that of a simple commercial vessel. …
 

Jeff Head

General
Registered Member
Our friend SOC from IHS Jane of the opinion that the mystery ship is in fact Carrier Anybody has subscription on Jane Defence for the full article ? Here is the abridge version
  • An unidentified hull in an advanced state of construction at Dalian shipyard could be China’s first indigenous aircraft carrier
  • While a conclusive identification of the hull as an aircraft carrier cannot be made until work is observed on the upper decks and potential flight deck, the slow pace of assembly and outline suggests a military hull under construction

The new hull, first noted under construction in imagery captured on 10 March, is in an advanced state of assembly. … …

… Imagery from 22 September shows a lengthened aft section and expanded bow. The hull is currently assessed to have a length of about 240 m and a beam of about 35 m. The incomplete bow suggests a length of at least 270 m for the completed hull.

Given the incomplete nature of the upper decks…
This pretty much agrees with what most of have been saying on this thread and others about the mystery ship on numerous occasions.

Article said:
Given the incomplete nature of the upper decks, definitive identification of the Dalian hull as the first so-called ‘001A’ aircraft carrier is not possible.

Still too soon to tell.

Give it a few moiré iterations of pictures and particularly if we see details of the after section of the ship, or if the construction proceeds a bit further towards the flight deck, or to clear indications of openings for the elevators, and we will be able to nail it.
 

Hendrik_2000

Lieutenant General
This pretty much agrees with what most of have been saying on this thread and others about the mystery ship on numerous occasions.



Still too soon to tell.

Give it a few moiré iterations of pictures and particularly if we see details of the after section of the ship, or if the construction proceeds a bit further towards the flight deck, or to clear indications of openings for the elevators, and we will be able to nail it.

SOC is cartography analyst by profession. You left out the the rest of the quote Here is what he said .Of course nobody can be certain since PLAN doesn't have the habit of divulge their building plan. But by all indication it is military ship no doubt about it

However, the dimensions of the visible object closely match the waterline measurements of 270×35 m for Liaoning. Furthermore, Kuznetsov underwent a similar assembly process at Nikolayev shipyard in the mid-1980s; a significant portion of the lower hull was completed before work began on the flight decks and island, resulting in an incomplete hull similar to that seen at Dalian on 22 September. …
 
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