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SpaceX launch webcast: Orbcomm-2 Mission [video]

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Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#361

Earlier quoted context omitted.

I have a vague feeling he's being snide to pay Elon back for those mildly snarky tweets back when Blue Origin landed their rocket. EDIT: Musk: "Congrats to Jeff Bezos and the BO team for achieving VTOL on their booster" Musk: "It is, however, important to clear up the difference between "space" and "orbit", as described well by https://what-if.xkcd.com/58/" http://money.cnn.com/2015/11/24/news/companies/elon-musk-jef…

-404: https://what-if.xkcd.com/58/

your link works fine, the one above had a bad double quote at the end

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#362
post #289

Earlier quoted context omitted.

Why don't they put a smaller engine in the centre for landings?

You won't be able to adjust thrust vector (and stabilize the landing booster) with just one engine.

SpaceX's Falcon lands with only one engine. The other 8 are off.

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#363

Earlier quoted context omitted.

You just described the way I launched my first comms network constellation[0] - basically loaded a whole bunch of satellites on a single rocket and deployed them on slightly different orbits, so that they'll spread themselves out as the time goes. Only mid-launch I figured out I could just put three of them on Kerbisynchronous Equatorial Orbit at 120° phase difference :/. Yes, KSP is absolutely amazing for learning t…

is it this one? https://kerbalspaceprogram.com/en/

Yes.

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#364
post #298
post #248

In a single moment, SpaceX earns itself more than $50 million dollars, right? That's a big bonus for everyone who made this possible and some well earned time off, and then back to work changing the world! So from what I've read, the returns are immense; the amount of learning they can do from examining their own rocket is the real initial treasure. Their rocket design should advance considerably based on this trove,…

I guess this would be a good place to point out that we are hiring! :-) http://www.spacex.com/careers

Wish I could. As a Canadian though seems ITAR would block me.

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#365

This is so exciting. Not quite a moon landing, but still feels like watching a significant moment in history. Does anyone know what specifically changed to allow a landing attempt on land as opposed to barge? Was it just that they gained enough confidence with the barges that they would at least be able to hit the target (and not crash into a building or something), or was some regulatory clearance received or someth…

> Does anyone know what specifically changed to allow a landing attempt on land as opposed to barge?

I believe the main concern was not putting what amounts to an ICBM into Disneyworld. Hitting the barge (even though they hit a little hard each time) proved they could hit within a few feet of where they planned reliably.

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#366

Earlier quoted context omitted.

I don't see any spots open for a nurse! Phooey. :)

Or a farmer. Guess I'll have to wait until Mars is ready for ploughing :)

They're going to need both you (a farmer) and me (a nurse) on Mars, that's for sure buddy! :)

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#367

Earlier quoted context omitted.

That, and I want to see an Epic Rap Battle of History between Musk and Bezos some day. It will take a lot of competition and a lot of progress before they have enough dirt to throw at each other.

Hahaha... Thanks, that cheered me up. Someone should totally do rap battles while pretending to be some famous figure. The possibilities are endless. Faux Bill Gates vs Faux Steve Jobs.

https://www.youtube.com/watch?v=njos57IJf-0

It's a bit silly, but entertaining. It doesn't get too technical, but usually gets the generic facts right.

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#368
post #357

Earlier quoted context omitted.

It's not just you. This is my take on it: However nerve-racking the launch and first stage recovery were, this wasn't a sports event, and cannot support that kind of hyper-enthusiastic presentation style without looking staged and histrionic. Sports presentations like that work because there are lots of fans cheering wildly in the background, and sports might be unique in their license to evoke extreme enthusiasm wit…

'presentation style'. Are you suggesting the employee audience reaction was staged and orchestrated, and not just spontaneous?

No, I mean the three mugs up front yakking away distractingly.

If I were to make a suggestion, it would be to house the loud employees in a large sound-proof booth, but I suspect that would only lead to yet more downvotes here...

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#369
post #306

Earlier quoted context omitted.

Technically they only earn the $50m when they use this stage to actually launch another mission. Even then, you'd have to subtract any discount offered to the purchaser of the second mission. I'm not in any way trying to detract from this stunning, tear-inducingly great achievement, but that's the reality.

Why would they offer a discount? The rocket is not going to fly a second time unless it has the same reliability rating as the first. They might end up offering lower cost launches, reducing the margin, but discounts on Nth-launches don't make sense.

It isn't just another launch, every future launch with this same rocket is now an experiment. It can't have the same reliability rating because a second launch hasn't been tested and these aren't freshly machined parts. Every piece in the rocket has experienced a level of wear and tear that previously launched rockets didn't have. Maybe it's exceeded the amount of cyclical stress it can handle? Who knows, but most satellite companies wouldn't pay the same for a re-used (never before been re-used) rocket as they would for a brand new rocket because of the increased risk. I would not be surprised if they did in fact give a discount to the payload of anyone who rides this same rocket. If they don't give a discount the only reason someone would purchase a spot on it is for the prestige.

Note: The never before been re-used part is probably the most important factor here. Once they have re-used rockets a few times they'll have a reliability factor for these situations.

Re: SpaceX launch webcast: Orbcomm-2 Mission [video]

#370
post #124

Earlier quoted context omitted.

OK, explain how the landing of the SpaceX first stage was many times more difficult? They used different mechanisms, yes (suicide burn vs. hover-capable) and the purpose of the overall system was different, but they are both VTOL rockets. Blue Origin was first , and Bezos can quite rightly welcome SpaceX to 'the club' as the second company to achieve this, without being accused of being classless, surely?

Because the Falcon 9 traveled at several thousand miles per hour horizontally when it did its flip and then the first retro burn. By contrast, the Blue Origin rocket went straight up, and straight back down. It never moved away from the launchpad in any appreciable amount and it never had to change orientation. From a space applications perspective it is not much more useful than a blimp. Today, history was made. Blu…

History is being made wheter you like it or not.
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