The SpaceX Falcon Heavy Is Ready To Launch (Ft. The Everyday Astronaut) | Answers With Joe
发布时间 2018-01-08 13:30:00 来源
摘要
Elon Musk's dream of landing on Mars is a little closer to reality as SpaceX prepares to launch its Falcon Heavy rocket this month, and it couldn't be more exciting.
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TRANSCRIPT:
The Falcon Heavy was first announced in 2011 at a news conference in Washington DC, but the idea had been floating around since 2004.
And the idea was pretty simple. SpaceX had the Falcon 9 rocket, which at the time had done a couple of test runs into Low Earth Orbit so they were getting a feel for what it was capable of.
And what they saw was it was a great workhorse to take cargo to the ISS, and satellites to low Earth orbit and smaller payloads to geosynchronous orbit… but there were some payloads that needed more power.
So… Why not strap a few Falcon 9’s together? Boom. Done.
And that’s basically what the Falcon Heavy is, it’s three Falcon 9 cores connected together with a second stage and payload on the top of the middle core, giving it 27 engines total with 5 million pounds of thrust.
Falcon 9 rockets care called Falcon 9 because they have 9 Merlin engines on them.
Liftoff of this thing is going to be awesome. It’s been a long time since we’ve seen a rocket this powerful take off but with SpaceX, the launch is just the precursor to watching them land.
So once it gets into space, the two side cores will disengage, turn around, and head back to the pad.
Then, we are going to watch two Falcon 9s land almost simultaneously. It’ll be like some kind of rocket version of synchronized diving.
The third, middle core will continue to push the dummy cargo into orbit before it disengages, turns and lands on a barge further out to sea.
So once all the first stage cores land, the fairing opens and reveals the dummy cargo, which in the case of this first test flight will be… you guessed it… Elon Musk’s personal original Tesla Roadster.
Never to be outdone in the PR department, Elon Musk announced in December that he was going to use this event to launch his personal Tesla Roadster into Mars orbit. Something he seemed to insinuate was just a joke, but… (show picture)
It’s not a joke. He’s actually launching a car into space.
Just to make it more fun, he says that the stereo on the car will be playing Space Oddity by David Bowie, though I don’t think you’d be able to hear it in the vacuum of space, but still.
And just to be clear, the car isn’t going to Mars, it’s going out to the distance of Mars, so it will circle the sun relatively along Mars’ orbit. For the next billion or so years, according to Elon.
Anyway, when the heavy goes into operation, it will be the most powerful rocket currently in use today, by a factor of 2.
And it will be 4th most powerful rocket of all time behind the Saturn V, the Space Shuttle, and the Soviet N-1, which had a tendency to explode. Every time. It never made it.
Because it had 30 engines. Mo engines mo problems.
This title will be taken back by NASA once the Space Launch System gets up and running, it’ll actually be more powerful than the Saturn V, but we’re still a year or so out on that.
The Heavy already has a couple of satellite launches scheduled, the Arabsat 6A communications satellite and Space Test Program 2 mission for the US Air Force…
There’s also a plan to carry a Dragon Crew spacecraft with two passengers on a circumlunar mission in late 2018. But that’s very speculative.
So they’re making a Big Falcon Rocket. The BFR.
The BFR combines all the power of the three Falcon cores in the Heavy with 31 next-generation Raptor engines, and a large second stage capable of hauling more cargo than the Saturn V and can land vertically, making it fully reusable.
The Raptor engines in the BFR use a liquid methane and liquid oxygen mix called Methalox as fuel because those are capable of being created on Mars, which is the ultimate destination of the BFR.
But the Raptors are also a huge step up from the Merlin engines because they work at extremely high pressure to burn more efficiently and provide more thrust.
The plan is to begin construction on the BFR sometime in 2018 and the first launch isn’t expected until 2022, but even Elon said that was optimistic.
So we may get a few good years out of the Falcon Heavy yet. But it all starts with the first test launch, which is what makes this so compelling.
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