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Comment by eggie | Hacker News Reader

It's too bad he can't joke about sending a scientific probe to Mars and then doing it.

The point is that first launch has no serious interest to warrant a real payload due to the higher risk of failure. If they weren't doing something fun like this they would just be loading it up with dead weight.

Or a wheel of cheese[0]

[1] https://en.wikipedia.org/wiki/SpaceX_COTS_Demo_Flight_1#Addi...

You could still do something fun and support a bunch of student science projects. They could be thrown together in a hurry, and at low cost. The risk of failure isn't a problem.

You'd probably still need to certify each of these projects to ensure they can handle the vibrations, environment and otherwise wont't interfere with the test. A project with components that rattles loose at max Q and somehow prevents separation is a problem.

You'd also need some kind of deployment system.

I'm also fairly sure Musk has already considered doing this, and reached a conclusion that it wasn't feasible.

Now I wonder at which stage of development a Tesla Roadster got that certification

“We certified the Tesla roadster to space flight loads and dynamics” - Can’t beat that kinda of safety engineering! :)

I'm pretty sure it will be launched as an inert hunk of metal and plastic. Batteries will be removed, fluids drained, etc.

I agree. The vibroacoustics and shock environments in a fairing are intense. He would likely have to rebuild the car from scratch to pass testing. Last thing you want is a wheel vibrating off and bouncing around in the fairing during flight. That could cause big problems with loads and/or controls.

> I'm also fairly sure Musk has already considered doing this, and reached a conclusion that it wasn't feasible.

Do you have evidence of this? Or is it just a hunch...?

The man is head of a successful private space launch company (a phrase which would have sounded oxymoronic just a couple of decades ago) which has achieved some significant firsts. Assuming he’s not a complete idiot in this field should be the default.

I am sure there is no evidence, but is literally the most basic and first assumed thing. The man who brought you reusable rockets didn't forget to think about the most basic thing first.

Is't that machine worth six figures? Has the world gone mad that we can't find a more productive way to have "fun"

It's a first gen roadster, I believe, so it's a decade old. If it's worth six figures, it's for its historical value (and if it's ever retrieved from Mars it'll be worth FAR more in that regard after this stunt).

Has the world gone mad that we’re worrying about the six-figure cost of a dummy payload on the test launch of a nine-figure rocket?

The cost of the second hand Tesla is nothing compared to the PR value of doing this.

That's cheap though, a sattelite that size costs millions if not tens of millions.

Although I guess you could argue this one does too, given that it's not from the production line, probably hand-built.

You are missing the point. The point he is making is that he is actually taken some risk or putting something that is dear to him, in jeopardy.

If the mission is successful, do they recover the car? Or will it be released into orbit? And if that, will it eventually burn up?

Incentive for BFS to do something spectacular on its maiden voyage.

It will orbit the sun for hundreds of millions of years

... Until it is recovered by space pirates and sold as a historic artifact....

Imagine a human like alien civilisation discovering the car. They would be like we found the chariot of God.

Great question.

It doesn't cost them 6 figures.

Potentially did when he built it. Wasn't this the very first fully assembled one ever built?

Getting to an orbit around Mars costs a lot more money and effort, because it requires the payload to have the ability to do course corrections and another orbit insertion burn when it passes very close to Mars. The second stage of the Falcon 9 doesn't have the ability to stay powered and fueled during such a long trip through deep space.

I assume this stunt will just launch a dummy payload into a non-circular orbit around the sun with its distance to the sun varying between sun-earth and sun-mars distance. Like a Hohmann transfer orbit, except that it probably won't get anywhere near Mars and will just stay in that orbit indefinitely.

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