Nibb31 Posted February 15, 2017 Share Posted February 15, 2017 (edited) 4 hours ago, _Augustus_ said: http://www.popularmechanics.com/space/rockets/a25232/nasa-considers-astronauts-sls-launch/ https://arstechnica.com/science/2017/02/nasa-looking-to-accelerate-first-crewed-orion-launch-to-as-early-as-2019/?comments=1 I see no reason why not. The DCSS and Orion have already flown unmanned together, and the modified Shuttle hardware was proven on 135 flights. There is hardly any Shuttle hardware in SLS. The only thing I can think of is the engines, and even those are modified. Also, the whole point of the ICPS was that it didn't need to be man-rated for EM-1 and EM-2 would use the EUS. Doing EM-1 manned means that you need to go back and do all the man-rating paperwork on the ICPS for only one flight. Quote Even if there is something wrong during ascent, Orion has a LES. The Shuttle flew manned on its first flight and it had no crew safety measures! That would probably put a final nail in the coffin of the whole program though. Quote Makes me wonder what they'll do for EM-2 though. Maybe an Inspiration Mars-style mission? I doubt SLS survives that long. The whole idea looks like a desperate push to get a manned SLS flight before the next elections. Edited February 15, 2017 by Nibb31 Link to comment Share on other sites More sharing options...
Nibb31 Posted February 15, 2017 Share Posted February 15, 2017 3 hours ago, eagle92lightning said: It will carry a lander eventually possible one of my designs (I am very optimistic) Orion won't "carry" anything. It barely has enough dV to return from lunar orbit. Claiming that Orion is a key part of a Mission to Mars is like saying that the dinghy carried on the Santa Maria was a key part of Columbus' expedition. If they are serious about going to Mars, they need to start designing the Santa Maria, not the dinghy. Link to comment Share on other sites More sharing options...
insert_name Posted February 15, 2017 Share Posted February 15, 2017 Wait since when was the service module anywhere near completion Link to comment Share on other sites More sharing options...
munlander1 Posted February 15, 2017 Share Posted February 15, 2017 4 hours ago, _Augustus_ said: The Shuttle flew manned on its first flight and it had no crew safety measures! I know that STS-1 had ejection seats and I THINK a few missions after it had ejection seats. Don't quote me on the last part though. Link to comment Share on other sites More sharing options...
Bill Phil Posted February 16, 2017 Share Posted February 16, 2017 The only thing remotely similar to shuttle is the engines, which themselves are different. Even the SRBs had to be modified to a good extent. Link to comment Share on other sites More sharing options...
munlander1 Posted February 16, 2017 Share Posted February 16, 2017 (edited) So right now, the only rocket in development by nasa for manned U.S flight is the Orion and sls? Edited February 16, 2017 by munlander1 Link to comment Share on other sites More sharing options...
DerekL1963 Posted February 16, 2017 Share Posted February 16, 2017 1 hour ago, Nibb31 said: Claiming that Orion is a key part of a Mission to Mars is like saying that the dinghy carried on the Santa Maria was a key part of Columbus' expedition. If they are serious about going to Mars, they need to start designing the Santa Maria, not the dinghy. NASA is serious about going to Mars, but they're even more serious about keeping Congress happy and the money flowing. Congress wants a dinghy, Congress gets gold plated diamond encrusted dinghy. Link to comment Share on other sites More sharing options...
DerekL1963 Posted February 16, 2017 Share Posted February 16, 2017 42 minutes ago, munlander1 said: So right now, the only rocket in development for manned U.S flight is the Orion and sls? And Dragon, and Dreamchaser, and Starliner. Link to comment Share on other sites More sharing options...
munlander1 Posted February 16, 2017 Share Posted February 16, 2017 1 minute ago, DerekL1963 said: And Dragon, and Dreamchaser, and Starliner. Sorry I meant by NASA. Link to comment Share on other sites More sharing options...
munlander1 Posted February 16, 2017 Share Posted February 16, 2017 4 minutes ago, DerekL1963 said: NASA is serious about going to Mars, but they're even more serious about keeping Congress happy and the money flowing. Congress wants a dinghy, Congress gets gold plated diamond encrusted dinghy. Very good point. Link to comment Share on other sites More sharing options...
StrandedonEarth Posted February 16, 2017 Share Posted February 16, 2017 2 hours ago, munlander1 said: So right now, the only rocket in development by nasa for manned U.S flight is the Orion and sls? Well, Nasa is chipping in hundreds of millions to SpaceX and Boeing to help develop Commercial Crew vehicles. Congress has only approved around half of what has been requested, slowing development. Link to comment Share on other sites More sharing options...
razark Posted February 16, 2017 Share Posted February 16, 2017 (edited) 3 hours ago, munlander1 said: I THINK a few missions after it had ejection seats. Enterprise and Columbia were built with ejection seats for the commander and pilot. Columbia flew with them for STS-1 through STS-4, all of which carried only two crewmembers. On her next two flights, STS-5 and STS-9, the crew size was increased and the seats, while still installed, were disabled. By Columbia's next mission, the orbiter had been overhauled and the seats were removed. 3 hours ago, munlander1 said: Don't quote me on the last part though. Too late. Edited February 16, 2017 by razark Link to comment Share on other sites More sharing options...
munlander1 Posted February 16, 2017 Share Posted February 16, 2017 4 minutes ago, razark said: Too late. Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted February 16, 2017 Share Posted February 16, 2017 5 hours ago, Thor Wotansen said: Have they released the relaunch date yet? This Saturday, 7am pacific/10 am eastern/can't add right UTC. Weather looking iffy, but this article says they're finally going for an RTL landing again. https://spaceflightnow.com/2017/02/15/weather-could-stand-in-way-of-falcon-9-launch-saturday/ Link to comment Share on other sites More sharing options...
Vanamonde Posted February 16, 2017 Share Posted February 16, 2017 Overlapping threads have been merged. Link to comment Share on other sites More sharing options...
kerbiloid Posted February 16, 2017 Share Posted February 16, 2017 5 hours ago, Nibb31 said: There is hardly any Shuttle hardware in SLS. The only thing I can think of is the engines, and even those are modified. According to wiki/internet, its solid boosters and main orange tank are shuttle's. 5 hours ago, Nibb31 said: That would probably put a final nail in the coffin of the whole program though. Or a roulette chance, if otherwise it can be just closed... again. Every time I hear about the asteroid mission, it shrinks. Link to comment Share on other sites More sharing options...
sojourner Posted February 16, 2017 Share Posted February 16, 2017 40 minutes ago, kerbiloid said: According to wiki/internet, its solid boosters and main orange tank are shuttle's. Pretty much in name only. Large parts of them had to be redesigned for SLS. Find a better wiki. Link to comment Share on other sites More sharing options...
Bill Phil Posted February 16, 2017 Share Posted February 16, 2017 1 hour ago, kerbiloid said: According to wiki/internet, its solid boosters and main orange tank are shuttle's. They added a fifth segment to the SRBs, changed the nozzle, added some different materials for different burn rates, and a few other changes. Those SRBs are NOT Shuttle SRBs. They are derived from Shuttle SRBs, but they've changed quite a lot. As for the ET: it's plumbing and structure have essentially been redone. It's basically completely different, at least in the ways that matter. Vertical stacking is quite a bit different from side stacking. Link to comment Share on other sites More sharing options...
DBowman Posted February 16, 2017 Share Posted February 16, 2017 11 hours ago, _Augustus_ said: Makes me wonder what they'll do for EM-2 though. Maybe an Inspiration Mars-style mission? If it can get to a NEO ( as planned for EM-2, http://neo.jpl.nasa.gov/cgi-bin/nhats ) then it probably has the deltaV for a Venus Mars flyby ( assuming you can jam enough LS into it by dropping crew size etc etc etc ). This Venus Mars flyby I found using @PLAD's Flyby Finder passes Mars during Trump's ( potential ) second term and returns to Earth a couple days before the next President is sworn in. Link to comment Share on other sites More sharing options...
Nibb31 Posted February 16, 2017 Share Posted February 16, 2017 1 hour ago, DBowman said: If it can get to a NEO ( as planned for EM-2, http://neo.jpl.nasa.gov/cgi-bin/nhats ) then it probably has the deltaV for a Venus Mars flyby ( assuming you can jam enough LS into it by dropping crew size etc etc etc ). This Venus Mars flyby I found using @PLAD's Flyby Finder passes Mars during Trump's ( potential ) second term and returns to Earth a couple days before the next President is sworn in. Except Orion would be useless for that. It has a maximum flight duration of 30 days. Link to comment Share on other sites More sharing options...
DBowman Posted February 16, 2017 Share Posted February 16, 2017 11 minutes ago, Nibb31 said: Except Orion would be useless for that. It has a maximum flight duration of 30 days. one of the 'etc's? - they are not going to get to a NEO and back in 30 days - oh duh it's flyby of a captured one in cislunar space. Link to comment Share on other sites More sharing options...
dino1984 Posted February 16, 2017 Share Posted February 16, 2017 (edited) Stupid question, but I wasn't following issue for some time... did they finally launched retrieved booster?? Doesn't matter, found the answer Edited February 16, 2017 by dino1984 Link to comment Share on other sites More sharing options...
tater Posted February 16, 2017 Share Posted February 16, 2017 17 hours ago, munlander1 said: I know that STS-1 had ejection seats and I THINK a few missions after it had ejection seats. Don't quote me on the last part though. The eventually removed the ejection seats. They were always entirely wishful thinking, however. There were 2 shuttle failures. The second would not have been survivable regardless, though I suppose ejection seats (if automated) might have saved crew in Challenger (the crew compartment clearly survived, but it is unclear if anyone, even with an ejection system could have initiated it due to the forces involved---automation in this regard is worrisome, since any failure in that system (wrongly initiating it) could be catastrophic). Link to comment Share on other sites More sharing options...
tater Posted February 16, 2017 Share Posted February 16, 2017 The issue with SLS is, and has always been launch cadence. I just watched the House Committee meeting (with my old prof, Jack Schmitt as one of the guests), and they also talked about wanting a 2 launch per year cadence---the issue is they have no payloads, of course. I doubt they could bang out 2 Orions (with SM) by 2018 even with massive effort, and to do a manned flight, they'd presumably want an all-up, unmanned test. I suppose the Shuttle model is possible (all up, manned test), but it's clearly more risky than unmanned (though with a LES, it's considerably safer than Shuttle ever was, frankly). Link to comment Share on other sites More sharing options...
Canopus Posted February 16, 2017 Share Posted February 16, 2017 (edited) 9 hours ago, Nibb31 said: Except Orion would be useless for that. It has a maximum flight duration of 30 days. Well isn't it supposed to work in tandem with some kind of spacecraft? The point that makes the Orion interesting is that it can reenter from beyond low earth orbit so that a spaceship wouldn't need to decelerate into earth orbit for the crew to be picked up. Reentering straight from an interplanetary trajectory reduces mission complexity a lot. Edited February 16, 2017 by Canopus Link to comment Share on other sites More sharing options...
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