Russian Su-57 Aircraft Thread (PAK-FA and IAF FGFA)

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Tirdent

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silentlurker said:
Maybe they made a hardware/software change when moving to production from prototype?
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Making changes of a magnitude liable to cause such serious accidents renders building prototypes in the first place rather pointless. It was probably a hardware installation error (cable connector not securely fastened, which then dropped loose, chafed wires shorting out...) or incorrect configuration of a fundamentally sound software. I.e. human error during assembly.

There should not be systemic design errors at this point - least of all with the FCS which has consistently been one of the more impressive aspects of the project. Hell, IIRC they even flew it with one of the already tiny tail fins taken off at one point, to test its damage tolerance!
 
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silentlurker

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Tirdent said:
Making changes of a magnitude liable to cause such serious accidents renders building prototypes in the first place rather pointless.
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I'm not sure about the field of aircraft design, but prototypes often have custom code/equipment to collect data and metrics, so that if something goes wrong, you can determine the cause. Obviously they would be designed to not interfere with the base system, but this isn't always perfect.
 
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Anlsvrthng

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gelgoog said:
Even a skilled worker can make mistakes. Any visual aids are good in my opinion.
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Visible systematic issue from the picture of the projected visual aids ( I don't bothered to watch the video):
-the assembler counting the nuts from his hand into the holes - no identification of components, if there is a need to stop the work before used all nuts they can go back into the wrong bin - could be a fail on an audit
-hard to ID the type of nuts from the head - if the designer decided to use different nuts then the best way to avoid the mixing of them should be to colour code the nuts ,and prep of the working area with matching set of stickers prior of installation.
-The visual system doesn't help to validate the installation - for a capability like that the elements of the previous two steps required, maybe with a camera system.

Any visual aid is only a tool, that helps the skilled/capable persons to do quality job as fast as possible.

Without deep understanding about the product and process visual tools/VR headset could introduce serious new problems. They are complex tools on they own, the main premise of them is to decrease the required number of workers, but at the same time they introduce the need for high skilled front end jobs and create high risk in new areas.
 
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panzerfeist1

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Some news regarding weapons.

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"Moscow. December 16. INTERFAX – Tests of the Su-57 aircraft' weapons complex, including intra-body aircraft, will be completed in 2021, Andrey Yelchaninov, the first deputy chairman of the Russian Military Industrial Commission (VIC) panel, told Interfax.
"The peculiarity of the Su-57 is that it carries not only weapons that are already used by other types of aircraft (Mig-29, Su-30SM, Su-34), but also new types of weapons that will be used from the in-body space. Their tests are planned to be completed in 2021 as part of the aviation weapons complex," Yelchaninov said.
He stressed that these are completely new weapons samples that are created from scratch, including using new guidance principles.
"It's a really big step forward. The Su-57 is a smart aircraft with smart weapons - air-to-air and air-to-surface missiles, - said the first deputy chairman of the Russian Military Defense Ministry.
According to him, the transfer of the first su-57 series to the military is expected in the planned time - until the end of December.
"There is full confidence that the aircraft in the form, which is transferred to the troops, will complete state tests in 2021, all technical problems have been solved," Yelchaninov said, adding that 10 prototypes of the Su-57 have already performed more than 4.2 thousand test flights.
He noted that work was continuing on the "second stage" engine, which provided the aircraft with cruising supersonic speed. "Hopefully, within the framework of this or the next serial contract, the planes will already be supplied with a new engine," the source said. "
 
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panzerfeist1

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There is the Klevok-D2-Caliber and the Klevok-D2-Airplane version.
Assumptions are made that the Su-57 and Su-70 has a 4.6 meter by 1 meter internal weapons bay and that these missiles have folding wings, 1.5 meter payload length meaning remaining rocket with ramjet are both 1 meters. But lets say that the sustainer stage that was 130mm is also the version of the ramjet sustainer. so the ramjet body length with the payload length is 2.5 meters just for reference. That means on one internal weapons bay we stick 4 in the back move up by 1 meter, than assuming that we know have 130mm covered 2.5 meters and and up accounts for 520mm, means that we can stick 2 more 207mms 1 meter rocket boosters in there which now push the length to 4.5 meters? Meaning it can have 12 hypersonic air to ground 57 kg payloads to unload with a stealth profile and still travel far because of lightness of missiles?
 
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silentlurker

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panzerfeist1 said:
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There is the Klevok-D2-Caliber and the Klevok-D2-Airplane version.
Assumptions are made that the Su-57 and Su-70 has a 4.6 meter by 1 meter internal weapons bay and that these missiles have folding wings, 1.5 meter payload length meaning remaining rocket with ramjet are both 1 meters. But lets say that the sustainer stage that was 130mm is also the version of the ramjet sustainer. so the ramjet body length with the payload length is 2.5 meters just for reference. That means on one internal weapons bay we stick 4 in the back move up by 1 meter, than assuming that we know have 130mm covered 2.5 meters and and up accounts for 520mm, means that we can stick 2 more 207mms 1 meter rocket boosters in there which now push the length to 4.5 meters? Meaning it can have 12 hypersonic air to ground 57 kg payloads to unload with a stealth profile and still travel far because of lightness of missiles?
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You do understand what an RFP is right? This is literally just the Russian Military saying "These sre the parameters we want".

I also have no clue what you're trying to say to justify how 12 2.5x0.207 missiles can fit in a bay of size 4.6x1.
 
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