Vanamonde Posted September 21, 2018 Share Posted September 21, 2018 Keep it on-topic, please. Quote Link to comment Share on other sites More sharing options...
Nightside Posted September 21, 2018 Share Posted September 21, 2018 (edited) 3 hours ago, Vanamonde said: Keep it on-topic, please. We try our best , but Mr Musk makes it very difficult. Edited September 21, 2018 by Nightside Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 Quote Link to comment Share on other sites More sharing options...
NSEP Posted September 21, 2018 Share Posted September 21, 2018 To anyone who still thinks BFR is 'just a concept', well, you are wrong. ITS A CYLINDER NOW! https://www.teslarati.com/spacex-first-completed-bfr-spaceship-section-port-of-la-tent/ I have never been so happy about a cylinder in my entire life. Quote Link to comment Share on other sites More sharing options...
Elthy Posted September 21, 2018 Share Posted September 21, 2018 Im sure someone allready measured this, but have no idea where to look. Are we sure the new Raptor engines on the BFS are sealevel engines? They seem a bit to big to fit 31 of them in the same diameter... Quote Link to comment Share on other sites More sharing options...
Frozen_Heart Posted September 21, 2018 Share Posted September 21, 2018 1 minute ago, Elthy said: Im sure someone allready measured this, but have no idea where to look. Are we sure the new Raptor engines on the BFS are sealevel engines? They seem a bit to big to fit 31 of them in the same diameter... Maybe the BFR ones are true sea level engines, while the BFS engines which got shown are 'intermediate' engines to allow more to fit on compared to if they were vacuum versions? Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 The new booster has a skirt around the engine bells in the illustration, and is slightly larger than 9m in dia (10m?), Quote Link to comment Share on other sites More sharing options...
Green Baron Posted September 21, 2018 Share Posted September 21, 2018 (edited) Canards ! Cool. Like in a movie. Will they burn off during entry ? This is so kerbal, will it flip on the first try ? Will they paint a red/white checker board on it ? Every picture has new props and widgets. Will they forget the ladders ? Or a solar panel ? Seriously, looks extremely cool. Edited September 21, 2018 by Green Baron Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 Actually, if you watch the EDL animation they provided, the landing makes much more sense now. Literally sort of stall the spacecraft at some decent altitude above the ground (ie: killing almost all the horizontal velocity), and since the attitude is already nose WAY up, it's effectively already vertical. Quote Link to comment Share on other sites More sharing options...
NSEP Posted September 21, 2018 Share Posted September 21, 2018 25 minutes ago, Elthy said: Im sure someone allready measured this, but have no idea where to look. Are we sure the new Raptor engines on the BFS are sealevel engines? They seem a bit to big to fit 31 of them in the same diameter... This is also why: 26 minutes ago, tater said: The new booster has a skirt around the engine bells in the illustration, and is slightly larger than 9m in dia (10m?), Quote Link to comment Share on other sites More sharing options...
Mad Rocket Scientist Posted September 21, 2018 Share Posted September 21, 2018 26 minutes ago, Elthy said: Im sure someone allready measured this, but have no idea where to look. Are we sure the new Raptor engines on the BFS are sealevel engines? They seem a bit to big to fit 31 of them in the same diameter... Yes, they are. Thankfully someone asked during the presentation. They could be replaced with vacuum engines to increase payload to mars, at the cost of the easily accessible aft cargo. It just about matched up about with our predictions. Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 Note that you can even see the launch clam hold down pins on the booster (see the "t" shape?). On F9 (at 3 and 6 o'clock on the side): Quote Link to comment Share on other sites More sharing options...
NSEP Posted September 21, 2018 Share Posted September 21, 2018 Its kind of dumb that they got all the tiny fiddly bits, from clamp down pins to heatshield tiles, but they forgot the gridfins in the render. Very, very smart of the visual artist . Oh well Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 I'm still sort of astounded that they are sticking with landing on the launch clamps. Quote Link to comment Share on other sites More sharing options...
NSEP Posted September 21, 2018 Share Posted September 21, 2018 1 minute ago, tater said: I'm still sort of astounded that they are sticking with landing on the launch clamps. They are? Well, considering they can land the Falcon 9 pretty much bullseye on target, its not that crazy anymore, but still crazy. Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 For the booster, anyway. Quote Link to comment Share on other sites More sharing options...
Green Baron Posted September 21, 2018 Share Posted September 21, 2018 1 hour ago, tater said: Actually, if you watch the EDL animation they provided, the landing makes much more sense now. What amazes me, the guy could tell us something about the aerodramatics of that thing and so on. But he talks about an orbit being horizontal speed and not up. I mean, i am not silly and i knew that before KSP and i guess most here did so as well. He is not a gifted lecturer ... Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted September 21, 2018 Share Posted September 21, 2018 1 minute ago, Green Baron said: What amazes me, the guy could tell us something about the aerodramatics of that thing and so on. But he talks about an orbit being horizontal speed and not up. I mean, i am not silly and i knew that before KSP and i guess most here did so as well. He is not a gifted lecturer ... You'd be surprised how much of the general public doesn't know how orbits work. Quote Link to comment Share on other sites More sharing options...
Spaceception Posted September 21, 2018 Share Posted September 21, 2018 35 minutes ago, NSEP said: They are? Well, considering they can land the Falcon 9 pretty much bullseye on target, its not that crazy anymore, but still crazy. I wonder if that'll be part of the grasshopper tests with the BFS and BFB, go really high, drop, and land on a very narrow target. Later tests could make it approach at an angle. Quote Link to comment Share on other sites More sharing options...
NSEP Posted September 21, 2018 Share Posted September 21, 2018 2 minutes ago, Spaceception said: I wonder if that'll be part of the grasshopper tests with the BFS and BFB, go really high, drop, and land on a very narrow target. Later tests could make it approach at an angle. I could definitely see that happend on a BFB grasshopper test. I also think that they should do suborbital tests for BFS. BFS can without a doubt reach near-orbital speeds like 6000m/s to test re-entry and land back safely. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted September 21, 2018 Share Posted September 21, 2018 10 minutes ago, NSEP said: I could definitely see that happend on a BFB grasshopper test. I also think that they should do suborbital tests for BFS. BFS can without a doubt reach near-orbital speeds like 6000m/s to test re-entry and land back safely. ...Then refuel on the spot and jump back. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted September 21, 2018 Share Posted September 21, 2018 46 minutes ago, NSEP said: I could definitely see that happend on a BFB grasshopper test. I also think that they should do suborbital tests for BFS. BFS can without a doubt reach near-orbital speeds like 6000m/s to test re-entry and land back safely. I recall Musk saying they plan to do exactly that, tho I’m guessing the very first BFG is going to be a pretty stripped down affair: no heatshield, fewer engines, etc. Like the original Grashopper (OG?). Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 1 hour ago, Ultimate Steve said: You'd be surprised how much of the general public doesn't know how orbits work. Almost no one in the population at large knows this, including literally every reporter there who is not a space reporter, I'd wager. Quote Link to comment Share on other sites More sharing options...
Green Baron Posted September 21, 2018 Share Posted September 21, 2018 (edited) I meant he could have explained some features of the ship but it turns out he only has blabla. Which makes me ask myself, how much is real about the bfr at this time. Just my impression .... How about the engines for example ? Heretic's question, eh ? Edited September 21, 2018 by Green Baron Quote Link to comment Share on other sites More sharing options...
tater Posted September 21, 2018 Share Posted September 21, 2018 Quote Link to comment Share on other sites More sharing options...
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