laik píše:Jenže BFR poletí možná za deset let, takže z výletu kolem měsíce bude totéž co z Red Dragonu a dalších ambicí. Nepochybuju, že poletí. Kdo jinej než Musk by dotáhl věci do konce, ovšem otázka je, kdy...
Tak určitě, známe Elonovy časové odhady, nicméně během tiskovky prohlásil, že: "...doufají v první krátké lety BFR lodi snad už v příštím roce."
Celá pasáž o BFR v původním znění:
"What we decided internally is to focus our future efforts on BFR. Now we'll see how the BFR development goes. If that ends up taking longer than expected, then we'll return to the idea of sending a Crew Dragon on Falcon Heavy around the Moon. And potentially doing other things with crew on Falcon Heavy. But right now it looks like BFR development is moving quickly and it will not be necessary to qualify Falcon Heavy for crewed spaceflight. We could be ready to do short hops of the spaceship portion of BFR. BFR essentially consists of a giant booster and a giant spaceship. The giant spaceship is... once you're out of Earth's deep gravity well and thick atmosphere, for the rest of the solar system, you only need the ship. The giant booster is only needed for Earth, with its unusually deep gravity well and thick atmosphere. So our focus is on the ship, and we expect to hopefully do short flights on the ship, with the ship next year. You know, aspirational."
a v další odpovědi ještě toto:
"Falcon Heavy is absolutely capable of sending a Crew Dragon, Dragon version 2 that's under development and that we'll fly later this year for NASA. With a single stick Falcon 9, it's easy for us to do Low Earth Orbit missions, or Medium Earth Orbit missions, and then as soon as you add Falcon Heavy on, we can toss Dragon way past the moon. It's actually further than we went with Apollo. Possibly even visit an asteroid or something like that. That was our plan until last year. Then we though, you know, maybe we can make this BFR development go faster than we thought, and if that's true, there won't be much point in qualifying Falcon Heavy for launching Dragon, making it fully man-rated. So we kind of tabled the crewed Dragon on Falcon Heavy in favor of focusing our energies on BFR. Um, BFR consists of two parts. One is the ship and the other is the booster. So there's BRB, the booster. Which is kind of true, because it will Be Right Back. The booster's going to come back and land in probably about ten minutes after liftoff. And then the ship, which is the hardest part, just by far the hardest part of the vehicle, of the BFR system, or interplanetary transport system. Because the ship has to have a heatshield that's capable of re-entering from very high velocities. From velocities way higher than... Basically interplanetary velocities, as opposed to orbital velocities. It's got to control itself through a wide regime, from everything from vacuum, to rarefied gas. Everything from thin atmosphere to thick atmosphere. Hypersonic, supersonic, transonic, subsonic. Different types of atmosphere, from different planets. And then land on unimproved terrain, and be able to take off from unimproved terrain. That's a pretty ridiculous set of requirements for the ship. That's why we're focusing on the ship first, because it's kind of the hard part. And then the BFB (should I say BFB or BRB?) BFB is we think that's pretty straightforward, because it's pretty much like a Falcon boost stage, but with like 31 engines instead of 9."