John_Hasler

joined 1 year ago
[–] John_Hasler@lemmy.one 3 points 3 months ago

Let's not set the precedent of having the UN make decisions about space.

[–] John_Hasler@lemmy.one 3 points 3 months ago* (last edited 3 months ago) (1 children)

A missile would not change the re-entry time or location: just break the target into many pieces. In the one case where the US used a missile the target broke into many small pieces which mostly burned up on re-entry but I don't think that would happen with the ISS. Uncontrolled re-entry of a single large object would, I think, be preferable to re-entry of dozens of them.

No agreement would have any effect on the headlines saying "US allows its spacestation to crash on city, killing 800 people".

[–] John_Hasler@lemmy.one 3 points 10 months ago

It's been asserted that they were used for water but I know of no evidence that they actually were.

Texas regulations require that the design for a methane storage system be done by a registered professional engineer certified to do methane storage systems in Texas and be submitted for approval before construction starts. Thus it's unlikely that they were "too close together". More likely they just didn't work right. Perhaps they had an excessive boiloff rate or too high a leakage rate.

Speculation: Perhaps they decided to build their own tanks because lead times for purchased tanks were too long. It worked out for LN2 and LOX.

I wonder why they have not recycled the suborbital tanks?

[–] John_Hasler@lemmy.one 5 points 10 months ago (2 children)

They're now cutting up the shell of one of the vertical methane tanks. They managed to suck all the perlite out when we weren't looking.

[–] John_Hasler@lemmy.one 1 points 11 months ago

But there's a guy up on one of the veritcal tanks working on the lifting rings so perhaps Zack is right.

[–] John_Hasler@lemmy.one 2 points 11 months ago (1 children)

That looks like a long reach from where it's parked.

[–] John_Hasler@lemmy.one 6 points 11 months ago (3 children)

The LR11000 has moved into the space near gate D2 where they recently demolished the storage sheds. I think it's there to handle the last three horizontal tanks (unless it's just there to compact the new asphalt...)

[–] John_Hasler@lemmy.one 1 points 11 months ago

Kathy Lueders said that this month is unlikely but seems to think that there's a chance for January. I'll go with that.

[–] John_Hasler@lemmy.one 2 points 11 months ago

I think that a launch this year is still possible but I wouldn't want to give odds. I think that before the end of January is likely. It would be cool for it to happen on my birthday but I'd rather see it earlier.

[–] John_Hasler@lemmy.one 1 points 11 months ago

"Runs the risk" means it might happen, not that it will happen. When he said that Starlink was committed to switching to the version two satellites and F9 was not expected to be able to launch them. They would have missed their FCC deadlines. However, they were able to develop the "shrunken" Starlink2 that fits on F9. I also think that both the F9 launch cadence and Starlink sales have exceeded expectations.

[–] John_Hasler@lemmy.one 2 points 11 months ago (1 children)

If you never succeed you are pushing them too hard.

A test that goes to completion always returns more data than one that doesn't. For example there is a theory that the flaps on the ship are too large. IFT2 could have confirmed or falsified it.

[–] John_Hasler@lemmy.one 5 points 11 months ago (1 children)

Disconnect arm. Looks like they’re planning on lowering at least a portion of it. (Rover 2.0 Cam)

They removed the flex pipes.

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