PLAN Catapult Development Thread, News, etc.

[taxiya]

Me bad your mentioning of 002 confused me. (I have to stop doing this multitasking stuff)

some times imagination goes faster than our eyes and brains.
That new construction could be something related to the catapult concept shown in Zhuhai Airshow (I think it was 2014). That one claimed using some different energy storage device involving the words "superconductor" and "super inductor"

 

[delft]

some times imagination goes faster than our eyes and brains.
That new construction could be something related to the catapult concept shown in Zhuhai Airshow (I think it was 2014). That one claimed using some different energy storage device involving the words "superconductor" and "super inductor"

I miss the "super capacitor" in your list.

 

[taxiya]

I miss the "super capacitor" in your list.

Actually, there is no "super capacitor" in that description I read. It is Inductor.

I found part of it

I think someone may have already posted the picture in this forum

 

[delft]

Actually, there is no "super capacitor" in that description I read. It is Inductor. I will try to find a picture of it.

I think someone may have already posted the picture in this forum

I'm not really knowledgeable on these matters by long ago an energy accumulator was developed that was called a homopolar generator, in itself a concept from the 19th century, to deliver a large amount of electrical energy in a short time and that method is used by USN in its EMALS. A newer concept is the super capacitor which I expect will be used in future projects. But would super conductors be sufficiently robust in a naval vessel? Would that super inductor be a mistranslation of homopolar generator?

 

[taxiya]

A better picture

The claim from the poster is that, Super conductor is superior than super capacitor and flying wheel in terms of power, reaction (recharging time) and efficiency.

Any way, it is only my wild guess that the new track in Wuhan may (a big may) be related to this catapult. I have no evidence to support it.

 

[delft]

The "flying wheel" is the homopolar generator. The superconductor as energy storage was thought of long ago but it is news to me that its development has advanced enough. That leaves little room for steam cats.

 

[taxiya]

I'm not really knowledgeable on these matters by long ago an energy accumulator was developed that was called a homopolar generator, in itself a concept from the 19th century, to deliver a large amount of electrical energy in a short time and that method is used by USN in its EMALS. A newer concept is the super capacitor which I expect will be used in future projects. But would super conductors be sufficiently robust in a naval vessel? Would that super inductor be a mistranslation of homopolar generator?

No it is not a homopolar generator. There is no moving part.

A Inductor is a coil of wires with two ends being connected to a electrical source, when the source is removed, there is energy stored in the coil. It is similar to capacitor. Here is

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Both capacitor and inductor are common elements in electrics. They all save energy for a short period. Capacitor had the advantage over inductor in the past due to the fact that it loose energy much slower than conductor. The reason is the long copper wires that consume the energy even the two ends are disconnected, electrons will loose momentum after moving around atoms for some time. Capacitor store energy as static potential, electrons don't move, similar like a dam holding water potential high.

The advancement of high temperature super conductor in recent years, made it possible to remove the energy loose in inductor by using super conducting wires dipped in liquid N2, almost zero loss. This makes super conductor viable.

Super conductor does have lots of fundamental advantages than super capacitor.

 

[taxiya]

One extra information is that. One of Ma Weiming's research is "Electrical Launching", it is not EMALS, it is E-Gun. In his paper, he showed a diagram of composite energy storage including flying wheel, super inductor and super capacity, all three of them. The reason is due to the even more extreme bursty power demand of the E-Gun than catapult, and capacitor is the best for the burst, but it is deemed less energy dense, so the inductor.

One reason that I propose the idea of the new track being related to inductor is that super inductor is part of Ma Weiming's research. E-Gun is equally demanding on power and energy.

 

[Blackstone]

A better picture

The claim from the poster is that, Super conductor is superior than super capacitor and flying wheel in terms of power, reaction (recharging time) and efficiency.

Any way, it is only my wild guess that the new track in Wuhan may (a big may) be related to this catapult. I have no evidence to support it.

Talk is cheap and it's easy to make pretty graphs and posters, the proof is in the pudding. Until the PRC actually produces an EMLS on a commissioned and functioning carrier, it's still just a dog and pony show.

 

[taxiya]

Talk is cheap and it's easy to make pretty graphs and posters, the proof is in the pudding. Until the PRC actually produces an EMLS on a commissioned and functioning carrier, it's still just a dog and pony show.

yeah, yeah, yeah. Your response is predictable. Let me try to be you:

• Two years ago, when there was no catapult on in the training facility, you would have said "Until the PRC actually launched an aircraft from their EMALS, blah, blah, blah".
• Now, you say the above "until a functioning carrier".
  
• When 002 launched a jet from its deck, you will say something similar by changing the carrier (singular) to carriers (plural), or carrier to CBG? And we all know that 002 will be there in the near future.

Do you see your problem? You are like some other nay-sayers in that you keep on moving the goal post to support your emotional denial or rejection of PRC achievement. When PRC is not there, you say "it is not there", when PRC is there, you say "it is too slow", when PRC overtake your idol, you say "it is copy".

Nobody can change what you think as one saying goes "one can not wake up a man who pretend to sleep". I know I can't, so I won't try, but I can point it out that denial based on ideological and political and emotional conviction does not do any good for you, nor any good for whatever idea that you are committed.

And last, is it more constructive and contributing to this forum that you provide some substances for discussion than empty skeptics? What about you tell me the pretty graphs won't work? Perhaps some tech details, mathematics, formulas, data and logics for a change?