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https://arstechnica.com/science/2022/01/whats-going-on-with-russias-new-heavy-lift-rocket/The troubles with the long-in-development Angara A5 continue.
by Eric Berger - Jan 4, 2022 11:02am EST
The Russian space program has spent more than two decades developing the Angara family of rockets, and government officials have expressed high hopes for the Angara A5 heavy lift variant. It is hoped that the Angara A5 rocket can replace the venerable Proton booster, which is more than half a century old and in recent years has had reliability issues.
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Two days after the launch, even, the state-controlled Russian news service RT published an article with a headline stating that the Persei upper stage would significantly improve the performance of the Angara A5 vehicle. However, the article mentioned that Russian space chief Dmitry Rogozin was still waiting for the upper stage to relight.
"Dmitriy Rogozin congratulated the military on the successful launch of the new booster, noting that we are still waiting for the Persei upper stage to work," the article states. They're still waiting. The Persei upper stage, of course, was never going to relight, and Russian officials had to know this.
The proof is in the sky. This Persei stage, tracked as IPM 3/Persey, is now well below 200 km and will likely make an uncontrolled re-entry into Earth's atmosphere on Wednesday. Hopefully, it will do so over an ocean.
mahatmakanejeeves
(57,768 posts)NewDayOranges
(694 posts)About this for several days now...
Since news of this errant rocket wasn't posted elsewhere, I thought this might be a hoax...
Wicked Blue
(5,868 posts)marie999
(3,334 posts)crickets
(25,994 posts)Currently over South America. Here's hoping it comes down in the ocean and not on land.
lindysalsagal
(20,802 posts)Last edited Wed Jan 5, 2022, 01:58 PM - Edit history (1)
At this rate, assuming it doesn't increase much, it should be landed in the next 4 hours.....Ok: It just returned to about the starting place in south america an hour ago. So, we'll have to see 3+ earth rotations before it lands, assuming all the speeds remain constant...I have no idea if they will.
lindysalsagal
(20,802 posts)crickets
(25,994 posts)That's my uneducated guess. It was at about 83 miles up just before noon. Currently it's 80-81 miles up. It is falling, but slowly.
sl8
(14,053 posts)Last edited Wed Jan 5, 2022, 05:33 PM - Edit history (1)
The distance to Earth for an object in an ellipitical orbit would increase and decrease.
Not sure if that's what we're seeing here.
Talitha
(6,654 posts)lindysalsagal
(20,802 posts)lindysalsagal
(20,802 posts)Last edited Wed Jan 5, 2022, 06:18 PM - Edit history (2)
And the height of the atmosphere. When it drops another 6 miles, most of it will blow up on impact with the atmosphere. The smaller bits that survive will hit the earth in under 2 minutes!
I have no idea how to calculate how long it will continue to be in orbit, caught between our gravity and the sun, moon or whatever other gravity forces catch it. So, I guess we just keep watching until it seems to speed up???