Mad Rocket Scientist Posted March 30, 2019 Share Posted March 30, 2019 15 hours ago, sevenperforce said: Hot damn. What does he mean by MR 2? Mass ratio. Since it's greater than 1, m0/mf, as it appears in the rocket equation. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted March 30, 2019 Share Posted March 30, 2019 3 hours ago, Racescort666 said: I can hear Alan Stern rustling up his Pluto lander paperwork. It better do an sample return And don't forget Charon Yes you are arriving with 100 ton even if the wast majority of it with the two staged braking burn only Apollo took more mass into orbit around another body. main problem is how hard it would be to control an rover on pluto Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted March 30, 2019 Share Posted March 30, 2019 15 minutes ago, magnemoe said: It better do an sample return And don't forget Charon Yes you are arriving with 100 ton even if the wast majority of it with the two staged braking burn only Apollo took more mass into orbit around another body. main problem is how hard it would be to control an rover on pluto Luckily, Elon Musk’s side job is making autonomous vehicles. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted March 30, 2019 Share Posted March 30, 2019 1 minute ago, CatastrophicFailure said: Luckily, Elon Musk’s side job is making autonomous vehicles. LOL, using the auto park feature on your tesla in 2025 and you get an: Error: can not collect rock sample Quote Link to comment Share on other sites More sharing options...
NSEP Posted March 30, 2019 Share Posted March 30, 2019 So Elon says they could launch Starlink Satellites modified to be interplanetary probes in the aft cargo section of an expendable Starship (or just Super Heavy upper stage?), to get high quality images of distant worlds and maybe send science experiments along with them? Sounds like a cool idea. I'd love more HQ images of the outer-outer Solar System worlds, like Uranus' Moons and Neptunes moons. Those worlds haven't been visited in a while. Quote Link to comment Share on other sites More sharing options...
Racescort666 Posted March 30, 2019 Share Posted March 30, 2019 I have taken a particular interest in the ice giants missions that were proposed a few years back. No link because I’m on mobile and at the airport. This kind of up mass could greatly shorten the timeline for a Uranus/Neptune mission. NTR braking stage and the leftover reactor used as a generator (or just jettisoned and we can say we nuked “youranus”) you’d need deep space cryo-cooling to keep the H2 liquid but JWST has kind of been broaching that tech. The amount of awesome a mission like this is indescribable. Quote Link to comment Share on other sites More sharing options...
Barzon Posted March 30, 2019 Share Posted March 30, 2019 Images of EM's tweets: Spoiler Quote Link to comment Share on other sites More sharing options...
cubinator Posted March 30, 2019 Share Posted March 30, 2019 2 hours ago, Barzon Kerman said: Images of EM's tweets: Hide contents With 100 tons payload, that's 8006 m/s from the Starship. Quote Link to comment Share on other sites More sharing options...
Barzon Posted March 30, 2019 Share Posted March 30, 2019 Thats a lot. Quote Link to comment Share on other sites More sharing options...
Bill Phil Posted March 30, 2019 Share Posted March 30, 2019 30 minutes ago, cubinator said: With 100 tons payload, that's 8006 m/s from the Starship. Only really need 6500 for Europa Clipper out of LEO. Quote Link to comment Share on other sites More sharing options...
cubinator Posted March 30, 2019 Share Posted March 30, 2019 10 minutes ago, Bill Phil said: Only really need 6500 for Europa Clipper out of LEO. Time to break out the ice drill and 15 km of cable, then. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted March 31, 2019 Share Posted March 31, 2019 Ah, SpaceX... where now, even the foibles of the TEL are fawned over with baited breath... Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted March 31, 2019 Share Posted March 31, 2019 I hope the centre core doesn’t run out of TEA-TEB this time. Quote Link to comment Share on other sites More sharing options...
BlockGaming06 Posted March 31, 2019 Share Posted March 31, 2019 SpaceX should rename the BFR the falcon heavier, agreed? Quote Link to comment Share on other sites More sharing options...
Scotius Posted March 31, 2019 Share Posted March 31, 2019 45 minutes ago, BlockGaming06 said: SpaceX should rename the BFR the falcon heavier, agreed? Thicc Falcon. I will see myself out now. Quote Link to comment Share on other sites More sharing options...
linuxgurugamer Posted March 31, 2019 Share Posted March 31, 2019 1 hour ago, RealKerbal3x said: I hope the centre core doesn’t run out of TEA-TEB this time. I'm quite sure that they are adding extra to make sure they don't run . Quote Link to comment Share on other sites More sharing options...
Barzon Posted March 31, 2019 Share Posted March 31, 2019 (edited) Ah yes TEA-TEB, the most effective substance at preventing rockets from running away. Edited March 31, 2019 by Barzon Kerman Quote Link to comment Share on other sites More sharing options...
magnemoe Posted March 31, 2019 Share Posted March 31, 2019 On 3/30/2019 at 7:38 PM, NSEP said: So Elon says they could launch Starlink Satellites modified to be interplanetary probes in the aft cargo section of an expendable Starship (or just Super Heavy upper stage?), to get high quality images of distant worlds and maybe send science experiments along with them? Sounds like a cool idea. I'd love more HQ images of the outer-outer Solar System worlds, like Uranus' Moons and Neptunes moons. Those worlds haven't been visited in a while. Problem is that starlink is an com sat not an deep space probe. Ion don't work out there unless you have an reactor, not that this is out of the picture with the new mass limits but that would also require re-designing the craft. You need high gain antenna, various sensors and so on. Still with starship you want an deep space probe common buss who is relatively cheap, basic setup is an 100 ton package, 3rd stage for accelerating, forth for braking or more speed it you do an flyby. You can sacrifice some reliability so save cost simply as you can launch more of them. Quote Link to comment Share on other sites More sharing options...
RCgothic Posted April 1, 2019 Share Posted April 1, 2019 I thought he was suggesting using them as an inferometer array. They don't have to go into the far reaches of the solar system, just far apart from each other. A telescope the diameter of Mars orbit? Quote Link to comment Share on other sites More sharing options...
DDE Posted April 1, 2019 Share Posted April 1, 2019 Nonononono. No. No! Spoiler This isn’t even the first time we’re hearing that talk from The Illusive Musk. Quote Link to comment Share on other sites More sharing options...
cubinator Posted April 1, 2019 Share Posted April 1, 2019 41 minutes ago, DDE said: This isn’t even the first time we’re hearing that talk from The Illusive Musk. He'll be getting ever more talkative as he prepares to move back to his home planet, Mars. Quote Link to comment Share on other sites More sharing options...
DDE Posted April 1, 2019 Share Posted April 1, 2019 35 minutes ago, cubinator said: He'll be getting ever more talkative as he prepares to move back to his home planet, Mars. Will that be before or after he’s captured by the Seven Rings and left in a cave with a box of scraps? Quote Link to comment Share on other sites More sharing options...
Rakaydos Posted April 1, 2019 Share Posted April 1, 2019 1 minute ago, DDE said: Will that be before or after he’s captured by the Seven Rings and left in a cave with a box of scraps? That happened 10-20 years ago. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 1, 2019 Share Posted April 1, 2019 Was reading up a little on carrier landings, prompted by the "747 carrier" thread, and found an article about a time they test-landed a freaking C-130 on a carrier. But of course that is an edge case. The biggest aircraft ever landed operationally on carriers is the C-2 Greyhound, with a max loaded weight of 22.4 tonnes. It occurred to me...an empty F9B5 stage is estimated at 22.5 tonnes. It has control surfaces, and AoA, and flies through the atmosphere before landing. If you think about it, then, that gives Of Course I Still Love You and Just Read The Instructions the auspicious honor of accepting the largest operational aircraft landings of any aircraft carriers in history. Quote Link to comment Share on other sites More sharing options...
wumpus Posted April 1, 2019 Share Posted April 1, 2019 22 minutes ago, sevenperforce said: Was reading up a little on carrier landings, prompted by the "747 carrier" thread, and found an article about a time they test-landed a freaking C-130 on a carrier. But of course that is an edge case. The biggest aircraft ever landed operationally on carriers is the C-2 Greyhound, with a max loaded weight of 22.4 tonnes. It occurred to me...an empty F9B5 stage is estimated at 22.5 tonnes. It has control surfaces, and AoA, and flies through the atmosphere before landing. If you think about it, then, that gives Of Course I Still Love You and Just Read The Instructions the auspicious honor of accepting the largest operational aircraft landings of any aircraft carriers in history. The difference being that some of the "impossible" aircraft (don't ask me how the U2 got into the air) were often launched back into the air (don't expect the C-130 to do that), and the C-2 regularly flies off the deck of carriers (presumably as a flying fuel tank, followed by a C-2 variant E2C/E2D that provides RADAR coverage, followed by the fighters). So I wouldn't give that status to SpaceX's ships until they act as launchpads as well (does the hopper weigh ~22 tons?) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.