_Augustus_
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Posts posted by _Augustus_
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I'm just gonna let Keith speak for all of us here:
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On 11/7/2018 at 9:24 AM, Canopus said:
https://www.nasaspaceflight.com/2018/11/northrop-grumman-synergy-omega-sls-solid-boosters/
So we might after all see something of a Block 2 using a more advanced solid rocket motor.
I predict that EUS will be permanently scrapped and we'll see the original Block IA come back.
Eventually, maybe a J2X-based upper stage like the original Block II.
On 11/7/2018 at 11:26 AM, tater said:NG certainly has utility for the Gateway, assuming a different paradigm of cislunar operations. NG could loft substantial Gateway elements, but they can't co-manifest with a crew vehicle, so they'd need to develop a pretty robust tug vehicle (ULA ACES?).
NG S2 is planned to have some kind of on-orbit reusability eventually, so it might be able to act as its own tug.
Actually, NG can just barely get Orion to the Gateway (people have done it in RO), and that's assuming the engines don't improve over time like Merlin and Glenn itself doesn't get bigger.
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5 hours ago, Kerbal7 said:
The BFR will never become operational. Ever. There is no customer for this rocket. And despite Musk claiming to develop and build this rocket using his own money, rubbish. No customers, no investors, no rocket. Period. It's going to become a money pit and canceled. End of story.
And it could never be made safe enough for human spaceflight anyways. Retro-burning a giant rocket full of people Tintin style . Give me a break. How many times until that goes tragically wrong?
Think about it.
NASA learned its lesson with the Space Shuttle. Something the Russians are keen about. Paramount in human spaceflight is safety. Flight systems need to be simple and robust. That makes it safe. You get complicated and people get killed.
That's the very reason Orion is a capsule and the BFR is a pipedream.
When BFR flies in a couple years, I'll be sure to remind you of this.
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Not me.... LOPG is a useless pork project that's being made to give SLS/Orion a purpose. Seriously, if NASA wants to go to the moon they should just cancel LOPG and go straight to the lunar surface.
And before you tell me LOPG permits a reusable lunar lander.... how does it do that? Without a propellant depot the lander can't refuel, and if the lander can ISRU it doesn't need LOPG.
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11 minutes ago, tater said:
If they could actually do it exactly 2 months from today, that'd be the best Christmas present ever.
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Silvering chemicals arrive later this week - the only nearby coater who takes mirrors this huge has moved and won't be in operation for a while, so I have no other choice.
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Tested the 20" out tonight. Everything works great with one exception - the truss poles are several inches too long. Will fix that soon.
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Mirror is in the cell.
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11 hours ago, Bill Phil said:
I'd place the blame on Boeing and Congress. Boeing has pretty much completely screwed every aspect of SLS they could and Congress just doesn't care.
Boeing needs to be investigated for... a lot of things. Between their failures on SLS, their failures on Starliner which they try to cover up, falsely claiming they alone build and own SLS, and the libel against SpaceX, I wouldn't be surprised if they've broken some laws at this point.
Unfortunately, this is Boeing we're talking about, and the US government is super corrupt - were either of those not the case, we probably wouldn't have an SLS rocket to criticize.......
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Block I has literally three payloads:
- EM-1
- EM-2
- Europa Clipper
You can't comanifest DSG modules on Block I with Orion, which would mean they'd require their own propulsion, in which case why not fly them on commercial LVs?
I guess CAESAR, if selected, could fly on Block I and arrive at 67P faster, but that might exceed the mission's budget.
An ice giant mission or Cassini follow up could work, but that's not in development.
BA-2100 doesn't exist.
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18 hours ago, tater said:
Maybe on the mythical Block 2.... now farther away (as we expected):
At this rate, by the time SLS flies, there will be two new HLVs (Vulcan and New Glenn) capable of lifting Orion and DSG components to TLI. And that's if we ignore BFR.....
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Just now, CatastrophicFailure said:
It shall be interesting to see how things play out with BO supplying such a critical component to their biggest competitor.
Second-biggest.
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Finished the 20", just needs a mirror cell.
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13 hours ago, Nutt007 said:
Holy crap that's a monster! I was thinking about building a dobsonian mount for my 4.5" Newt. Do you have any advice that could point me in the right direction?
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OTA and base for the 20" was completed last week.
I also redesigned the UTA for the 16":
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Mirror box with bearings (still needs staining and laminate).
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Got the mirror and a UTA for it:
Also:
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On 8/23/2018 at 7:40 PM, Gargamel said:
Lesson learned. In the future, a half now, half on delivery is a good way to ensure your costs are covered when building bespoke items, and gives the customer incentive to actually take delivery. Taking half now will cover your material costs and time, and the half on delivery should be almost all profit.
That's what I did.
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Got a surprise phone call from a guy the other day and I am happy to report a 20" (0.5 meter!) f/4 polished BVC mirror is now en route to me.
More to follow.
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On 8/9/2018 at 1:59 AM, Cheif Operations Director said:
How expensive is this to do I'm considering it
Depends on what you want to accomplish......
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It's been a while!
Finished the 10" but the customer didn't want it. Trying to sell it at the moment.
Rebuilt the 6":
Brought all three Dobs to Stellafane:
Won the first and third place Junior awards there.
Think about it.
NASA SLS/Orion/Payloads
in Science & Spaceflight
Posted
Guys.
Read what I just said in the revised OP.
Berger lost all of his credibility a while ago. He just says whatever will get Ars clicks and all the SpaceX fans riled up. He's not reporting real facts anymore.