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Russian Launch and Mission Thread

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1 hour ago, nepphhh said:

50 km/s??? I highly doubt we have the technology to make anything survivable at an impact of that speed, no matter in how much ice you encase it.

50 0002 / (2 * 250 * 9.81)  ~= 500 000 g

The artillery shell electronics limit is ~15 000 g.
https://en.wikipedia.org/wiki/Orders_of_magnitude_(acceleration)

So, 30 times stronger electronics is needed.

On the other hand, just twice as strong as the ultracentrifuge from the same table, which is still an electromechanical device rather than a piece of metal.

P.S.
'Oamuamua is 200 m long and 35 m thick.
It should just pierce is along or break in pieces.

Probably they could just make a hole in a bigger one and let the probe fly through this hole gathering dust...

Edited by kerbiloid

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8 hours ago, kerbiloid said:

NPO Lavochkin proposed a space dart concept to penetrate interstellar objects trespassing our system.

I’ma go out on a limb here and say maybe shooting darts at alien probes passing through our system might send them the wrong impression... :wacko:

...or maybe the right one...

 

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2 hours ago, CatastrophicFailure said:

I’ma go out on a limb here and say maybe shooting darts at alien probes passing through our system might send them the wrong impression... :wacko:

...or maybe the right one...

 

Definitely the right one. “This here is our system, we welcome unannounced guests with 50 km/s penetrator darts, have a nice day”.

Edited by sh1pman

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The Vorlons first shot then asked didn't ask.

https://babylon5.fandom.com/wiki/Vorlon_Homeworld

Quote

Expeditions were sent to the planet following the Vorlons' departure, none of which survived. Lyta Alexander has said that the Vorlon homeworld was "off limits" until the younger races were ready for the technology left on the planet.

So, this looks like the right way.

Upd,

Spoiler

134fe437f89add4c8dab1674da2a68ec.png

 

Edited by kerbiloid

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Quote

Everything You Need To Know About Russia’s (Possibly Fictional) Super Heavy Rocket

By Anatoly Zak

yenisei-design-800-1580426176.jpg?resize

https://www.popularmechanics.com/space/rockets/a30705512/yenisei-rocket-russia/

Thoughts: 

Quote

But the problem with the Energia three decades later is that its components were simply too big to transport in a country much smaller and much less affluent than the Soviet Union.

...

But today, without that costly option, Roscosmos engineers need to fit all major components onto rail cars, which could then pass through the narrow tunnels and treacherous zigzags of the Trans-Siberian railroad. By abandoning the use of risky hydrogen fuel on the core stage and opting for the less-efficient-but-more-condensed kerosene fuel instead, engineers could "slice" the rocket into a cluster of seven boosters, each of them small enough to fit onto a rail car.

Why can't they just build a hydrogen stage factory at Vostochny? Better rocket + jobs for Far East + pride for reviving Energia. Or have I been spoiled by SpaceX approach to building Starship and launching it from the same place?

Edited by sh1pman

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8 hours ago, sh1pman said:

Why can't they just build a hydrogen stage factory at Vostochny? Better rocket + jobs for Far East + pride for reviving Energia. Or have I been spoiled by SpaceX approach to building Starship and launching it from the same place?

Edited 5 hours ago by sh1pman

I dunno, man, I seriously want to see that great Kerbal monstrosity fly for real. :o 

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2 hours ago, CatastrophicFailure said:

I dunno, man, I seriously want to see that great Kerbal monstrosity fly for real. :o 

Same, but it would be 10 times more badass if they had chosen Energia-style hydrolox first stage instead of kerolox. 

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1 hour ago, sh1pman said:

Energia-style hydrolox first stage instead of kerolox. 

Energia 1st stage was kerolox. It's 2nd stage (central core) with hydrolox.

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The Gagarin centre is forced to consider relaxing cosmonaut requirements because everyone has gadget-induced nearsightedness these days.

A standup comedian snarks that juvenile criminal records and minor psychiatric disorders will be tolerate next.

Rogozin takes snipes at him across multiple media.

https://iz.ru/972406/2020-02-05/rogozin-otvetil-na-shutku-urganta-o-smiagchenii-trebovanii-k-kosmonavtam

This is the space program we deserve.

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10 hours ago, kerbiloid said:

Energia 1st stage was kerolox. It's 2nd stage (central core) with hydrolox.

I wrote “Energia-style first stage”, and it referred to the new super heavy rocket, not Energia. Yenisei first stage (central core) = Energia second stage, Yenisei boosters = Energia first stages.

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Hydrolox is daft as a first stage anyway.

Too low-thrust when the rocket is heaviest.

Unnecessarily bulky for assembly, transport and pad infrastructure.

Unnecessarily high cross-section for when the rocket is transiting the densest atmosphere.

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3 minutes ago, RCgothic said:

Hydrolox is daft as a first stage anyway.

Too low-thrust when the rocket is heaviest.

Unnecessarily bulky for assembly, transport and pad infrastructure.

Unnecessarily high cross-section for when the rocket is transiting the densest atmosphere.

Well, it's not daft if it's LANTR...

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6 minutes ago, RCgothic said:

Too low-thrust when the rocket is heaviest.

That’s why there’s 6 kerolox boosters.

7 minutes ago, RCgothic said:

Unnecessarily bulky for assembly, transport and pad infrastructure.

That’s why it’s better to build hydrolox stages near the launch site.

7 minutes ago, RCgothic said:

Unnecessarily high cross-section for when the rocket is transiting the densest atmosphere.

Maybe. But losses due to atmospheric drag are very low anyway, compared to gravity losses.

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1 hour ago, RCgothic said:

Hydrolox is daft as a first stage anyway.

Too low-thrust when the rocket is heaviest.

Unnecessarily bulky for assembly, transport and pad infrastructure.

Unnecessarily high cross-section for when the rocket is transiting the densest atmosphere.

But instead they can ignite all engines on ground, partially increase total ISP during the ascent, vary the number of side boosters instead of throttling.

Spoiler

And use wooden T-sticks to ignite them.

So, like the Shuttle recommended.

At 10 km the air density is anyway ~3 times lower, so ISP grows, and compared to the total burn time (~10 min or so), it's just several percent of duration with ISP 2/3 of maximum.

Edited by kerbiloid

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According to the US satellite monitoring resources, the American recon sat USA-245 took evasive action on approaching of the Russian inspector sat Kosmos-2543.

It was estimated that Kosmos-2543 should be passing next to the USA-245 on 2020.02.(07..10).
After maneuver, the closest approach was performed on 2020.01.(20..21)
(If I got it right, 150..300 km of distance).

Then K-2543 tried to synchronize its orbit with USA-245.

***

In Novermber 2019 another a bigger sat Kosmos-2542 was placed on orbit.
The Russian MoD declared that it's a mothership for orbital inspection and monitoring,
After launch, it separated a smaller sat, this K-2543.

The official purpose of the K-2543 is monitoring of other domestic sats.

https://translate.google.com/translate?hl=ru&sl=ru&tl=en&u=https://www.interfax.ru/russia/694389

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Two Russian crewmembers for the April launch are replaced with the backup crew for medical reasons.

https://translate.google.com/translate?hl=ru&sl=ru&tl=en&u=https://www.rbc.ru/technology_and_media/19/02/2020/5e4d528b9a79475707dee0a6

Upd. One of them has some long-term medical thing, so both are replaced due to this by Ivanishin & Vagner.

Edited by kerbiloid

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That's... not a lot of money for a high tech, space related company operating a sizeable asset.

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2 hours ago, Scotius said:

That's... not a lot of money for a high tech, space related company operating a sizeable asset.

That's exactly a hundred times the legally mandated minimum for an LLC, though )

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So, it's just a shell. Legal, placeholder entity with very little substance inside? Eh :/

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