/sci/ - Science & Math

>>9540909
Depending on a number of factors I'm not going to spend time listing, the general consensus of trip time to Mars from Earth is 130 to 300 days. As far as their CGI video goes, I really don't think that matters, since it is CGI, old in concept, and not real. Also, there's like 20-25ish CGI people on that CGI rocket. That's just a transport trip without a ton of gear. The gear would have been landed both before and after that. At max, they'd need like 9 to 20 tons of food depending on the number of days travel, just for the trip itself one way. 18 to 40 tons for both ways. Roughly 959lbs per week while they stay there. A 10 week stay would need 4.8 tons of food. So, the longest round trip with a 10-week stay on Mars would need 44.8 tons of food. (Based on some random block of the average American food intake for a year.) I'm sure those food numbers can be far lower in reality. According to wikipedia right now, the BFR's payload to LEO, while being reusable, is 165 tons. It makes two launches, one for people with cargo and one for fuel.

It seems doable.

>>9508790
>>9508990
I think the Falcon Heavy rockets has 3 more launches this year. Not sure after that, but if they have 4 launches per year (probably more) they'll have launched about 16 times before the SLS even gets off the pad. Then there may be delays for both, but the Falcon Heavy has already launched once. Meaning the 2022 schedule for the SLS might get moved along a year or a few years. It really depends on future funding. Especially, since there may even be a new president in office which might change everything.

Then again who knows, since Musk says the BFR might launch as early as next year. I'm sure companies will still charter flights on the other rockets.

>>9490102
Larger satellites than a car have reentered without a problem. The car, mount, and everything with it wouldn't be a problem for Earth.

>>9227480
Yeah, I keep missing stuff or it ends up being an ISS run with no landing other than a splashdown.

>>8805785
Pretty much everywhere even Earth itself at first.

https://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements
https://upload.wikimedia.org/wikipedia/commons/6/6a/Elements_abundance-bars.svg

As you can see, we have a "lot" of metals to use.

>fairing recovery

I thought they were going to use a fairing that wasn't ejected? It just opens then closes and returns. Like get rid of the fairing completely so to speak.