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Air Force Brat

Brigadier
Super Moderator
That fourth one looks like a high schooler's supa-fighta-jet that can destroy Gorgozoid invasion from Planet Zoiderdamngo.

But it has to be noted that it doesnt have a vertical tail. So... something like this without a horizontal tail...


While this is no doubt make believe, X wing anyone?, forward swept wings faces a lot twisting forces,, its beautiful and slik! Love the look, of course you can get by with hinging the ailerons on an angle, but the stabilators being hinged as they are would result in tremendous airloads, you would of necessity align the hinge angle with the slipstream.
 

Xsizor

Junior Member
Registered Member
About the GPU used aboard the J-20 fighter jet. It probably was supplied by Changsha Jingjia Microelectronics Co., Ltd.
It is likely 28nm node and a military sibling of the commercial products - Jingjia JM7000 andJM7200 series GPUs ?
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Xsizor

Junior Member
Registered Member
The F-35 lightning is supplied GPGPU likely by Nvidia and AMD.
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While the processing ( CPU) is likely based on Intel tech by Harris.
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I'd like to confirm the above information as well as know the technologies used in the Chinese counterparts.
 

Brumby

Major
However, I was wrong in inferring the reduced radar detection range in presence of jamming. That would be the burn through range from the figure you posted. So between 4-5 times lower burn through range, assuming the numbers I previously posted.

The correct interpretation, as far as I understand now, is as follows.

Assume that the Rafale-M has a 17 times lower RCS than J-15. Assume both aircraft are illuminated by the same radar. Assume both aircraft are jamming the radar. Then for the J-15 to be detected at the same (max) range as the Rafale it would need a jammer 17 times as powerful as the Rafale. The detection range can be derived from the burn through equation.
Max,
I am moving the conversation to this thread as a lot of what was discussed was cluttering the J-15 thread.

I cannot vouch for the details as they are data specific to the equation. However the principle remain true and that is there is an underlying jamming advantage in terms of power requirement associated with a RCS advantage. The burn through threshold itself is condition specific as you would appreciate.

upload_2019-8-28_11-14-51.png

With regards to the angular accuracy issue, it is a common problem especially with RWR.that historically had been pretty bad (10 degrees or more). There are recent advances such as with the ALR-67(V)3 on the F-18 that is down to 1 degree and the Spectra on the Rafael that is reportedly less than 1 degree. We don't know what the Chinese has but I do know that high end RWR/ESM with the high end capabilities cost. I question what one can buy when building a plane for $30 million. For example, the EPAWSS system alone planned for the F-15C cost $11 million plus a pop.

upload_2019-8-28_11-28-35.png
Source : AWST Sept 11, 1995


Finally be mindful of triangulation conversation because the tech level required between a static target and a fast moving target are significantly different. It is a quantum leap in capability. Don't be blinded by a bunch of non relevant red herrings.
 

Max Demian

Junior Member
Registered Member
Finally be mindful of triangulation conversation because the tech level required between a static target and a fast moving target are significantly different. It is a quantum leap in capability. Don't be blinded by a bunch of non relevant red herrings.
I agree. Triangulation of a static ground target can be done by collecting several bearing samples spaced apart enough to overcome accuracy and noise limitations. The farther away the target is, the more spaced out the data collection points need to be, and therefore the more time is needed.
 

Max Demian

Junior Member
Registered Member
The F-35 lightning is supplied GPGPU likely by Nvidia and AMD.
Please, Log in or Register to view URLs content!

While the processing ( CPU) is likely based on Intel tech by Harris.
Please, Log in or Register to view URLs content!


I'd like to confirm the above information as well as know the technologies used in the Chinese counterparts.
The other exciting, and not mentioned component, are the real time computing resources that run the avionics control loops and actuators. These are undoubtedly highly customized.

I watched Dojo explain his F-35 demos maneuvers, and the level of automation present in the aircraft is quite impressive.
 

J Smith

Just Hatched
Registered Member
Transformable J-20X mecha/gundam? :D

Can someone kindly translate the text in the photos?

As a life-long model builder and diecast collector, I'd LOVE to know the price, date of availability & the name of the toy company. Thanks.

Images from @Phoenix_BFB


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by78

Brigadier
Transformable J-20X mecha/gundam? :D

Can someone kindly translate the text in the photos?

As a life-long model builder and diecast collector, I'd LOVE to know the price, date of availability & the name of the toy company. Thanks.

Images from @Phoenix_BFB


View attachment 54368 View attachment 54369 View attachment 54370
This is a serious J-20 thread, and your post really has very little to do with J-20. Please post this under "Ask Anything" thread.
 

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