Quote from: Vultur on 08/23/2024 12:15 amQuote from: LouScheffer on 08/22/2024 11:49 pmQuote from: Vultur on 08/22/2024 11:32 pmQuote from: dglow on 08/22/2024 10:46 pmOff-topic AF, but: take the money you'd invest in SBSP and build earthbound solar fields instead. Invest the leftover in high-efficiency transmission lines to get that power from the sunny southwestern deserts across to the eastern seaboard.That works for the continental US. Not so much for Alaska and the northern half of Europe.I agree SBSP does not make sense for most of the world's population, but it might well make sense for high latitudes - which includes a number of wealthy nations with strong desire for clean energy.There are already projects to power southern Europe via undersea cables from solar fields in the Sahara. Expanding this, the Sahara has plenty of room to power all of Europe, which would need cables to be extended to the northern half of Europe. Even large capacity transmission lines are a lot cheaper than SBSP.Yes but you are then dependent on the sunny country. Satellites can be owned by the country needing the power.Would that actually happen though? I would imagine a lease or power purchase agreement arrangement, leaving the ops to the builder who is equipped to actually do things, as opposed to some island nation without a space program.The SunCable program to link Austrailian solar to Singapore via a subsea cable is apparently pushing forward, so transnational power+transmission arrangements are still a thing.
Quote from: LouScheffer on 08/22/2024 11:49 pmQuote from: Vultur on 08/22/2024 11:32 pmQuote from: dglow on 08/22/2024 10:46 pmOff-topic AF, but: take the money you'd invest in SBSP and build earthbound solar fields instead. Invest the leftover in high-efficiency transmission lines to get that power from the sunny southwestern deserts across to the eastern seaboard.That works for the continental US. Not so much for Alaska and the northern half of Europe.I agree SBSP does not make sense for most of the world's population, but it might well make sense for high latitudes - which includes a number of wealthy nations with strong desire for clean energy.There are already projects to power southern Europe via undersea cables from solar fields in the Sahara. Expanding this, the Sahara has plenty of room to power all of Europe, which would need cables to be extended to the northern half of Europe. Even large capacity transmission lines are a lot cheaper than SBSP.Yes but you are then dependent on the sunny country. Satellites can be owned by the country needing the power.
Quote from: Vultur on 08/22/2024 11:32 pmQuote from: dglow on 08/22/2024 10:46 pmOff-topic AF, but: take the money you'd invest in SBSP and build earthbound solar fields instead. Invest the leftover in high-efficiency transmission lines to get that power from the sunny southwestern deserts across to the eastern seaboard.That works for the continental US. Not so much for Alaska and the northern half of Europe.I agree SBSP does not make sense for most of the world's population, but it might well make sense for high latitudes - which includes a number of wealthy nations with strong desire for clean energy.There are already projects to power southern Europe via undersea cables from solar fields in the Sahara. Expanding this, the Sahara has plenty of room to power all of Europe, which would need cables to be extended to the northern half of Europe. Even large capacity transmission lines are a lot cheaper than SBSP.
Quote from: dglow on 08/22/2024 10:46 pmOff-topic AF, but: take the money you'd invest in SBSP and build earthbound solar fields instead. Invest the leftover in high-efficiency transmission lines to get that power from the sunny southwestern deserts across to the eastern seaboard.That works for the continental US. Not so much for Alaska and the northern half of Europe.I agree SBSP does not make sense for most of the world's population, but it might well make sense for high latitudes - which includes a number of wealthy nations with strong desire for clean energy.
Off-topic AF, but: take the money you'd invest in SBSP and build earthbound solar fields instead. Invest the leftover in high-efficiency transmission lines to get that power from the sunny southwestern deserts across to the eastern seaboard.
FWIW, I actually DO think that ULA is well positioned to build an SSTO... But only if we're asking about engineering and not markets, and SSTO means expendable rather than reusable... SSTO mass fractions improve substantially with tripropellant engines, thrust augmented nozzles, and balloon tank structures. ULA (or... maybe Corvair) has / had experience with balloon tank design in both Centaur and the old Atlases. I suspect ULA could build a three part balloon tank rocket with RP-1, oxygen and hydrogen tanks separated by common bulkheads (the hard part is the one they still do for Centaur). And AR knows how do to oxygen rich turbopumps as well as thrust augmented nozzles. Combine those and I bet you could orbit (expendably) with a payload somewhere above zero.</rocket daydream>
I expect after the ownership dust settles ULA will announce a launch vehicle evolution path towards a triple-core Vulcan Heavy with full SMART engine reuse and some number of expended GEM boosters, plus an ACES-like upper stage. The primary target trajectory will be trans- or cis-lunar, depending on the payload.
I expect after the ownership dust settles ULA will announce a launch vehicle evolution path towards a triple-core Vulcan Heavy with full SMART engine reuse and some number of expended GEM boosters, plus an ACES-like upper stage. The primary target trajectory will be trans- or cis-lunar, depending on the payload.New ownership, or a new agreement between the existing owners, would let them develop those payloads themselves. An Orion command module is < 11 t. Somehow I can't see Boeing designing another service module anytime soon. Maybe LM would try it, though.
ULA is currently a launch services firm focused on providing services to USSF and NROL. They are very good at it, except for not yet having a certified rocket. They should focus exclusively on providing these services, perhaps even using other companies' rockets.
As I said in the other thread, my pet theory is that ULA should start an SSTO project.
But with Starship, New Glenn, MLV, Terran R, Neutron, Nova, etc. all coming online in the next few years ...
Guys. This company hasn't developed anything substantially new since the day it was formed 20+ years ago.
When forced almost at gun point, they changed isogrid to orthogrid, switched engine supplier, and tinkered with Centaur yet again. Oh and dusted off a 20-year-old plan for engine pod recovery.20+ years.
Who do you think is left in that company that is capable of a brand new, revolutionary, from-the-ground-up project?
After a full generation passed by, people who stayed and thrived are people that fit what the company was doing. And also lawyers and lobbyists.
Quote from: meekGee on 08/23/2024 05:04 amGuys. This company hasn't developed anything substantially new since the day it was formed 20+ years ago.Yep, under current management.QuoteWhen forced almost at gun point, they changed isogrid to orthogrid, switched engine supplier, and tinkered with Centaur yet again. Oh and dusted off a 20-year-old plan for engine pod recovery.20+ years.Yep, under current management.QuoteWho do you think is left in that company that is capable of a brand new, revolutionary, from-the-ground-up project?Oh, I agree, they are sized for building the new Vulcan, and not much else. And that was what current management wanted.QuoteAfter a full generation passed by, people who stayed and thrived are people that fit what the company was doing. And also lawyers and lobbyists.If the reporting is true, then ULA is shedding a lot of people right now, which ironically puts them in a good position for hiring IF they get bought by someone that is perceived to have an interesting plan for the future. And that is still a big IF, because whoever buys ULA knows that ULA is poorly positioned for the future - because of the current management.The only reason I see to buy ULA is acquire assets that can be useful for moving into the new market the new buyers think they can potentially dominate. And that isn't launching mass to space.I think that could be in-space reusable transportation systems (i.e. tugs, shuttles, depots, etc.), since SpaceX will be capable of moving a LOT of mass into space for a pretty cheap price, and I think a lot of people, companies, and countries would want to do some experimentation with that capability.But part of the reason why a sale hasn't happened may be because Boeing & Lockheed Martin have overvalued ULA, and no one wants to over pay. So ULA could end up not being sold, in which case it turns into a zombie company that no one wants to work for. That would be sad.However if someone buys ULA assets that is perceived to have an exciting plan, then I think they will be able to attract good talent to wring value out of the ULA assets.
Quote from: JEF_300 on 08/22/2024 06:55 pm But with Starship, New Glenn, MLV, Terran R, Neutron, Nova, etc. all coming online in the next few years ...I very much doubt that all will succeed. At any rate, only one of those listed in-development is really in the same payload category as Vulcan - and it already lost out in head-to-head competition for DoD business.
Quote from: meekGee on 08/23/2024 05:04 amWho do you think is left in that company that is capable of a brand new, revolutionary, from-the-ground-up project?To suggest that ULA are incapable of revolutionary ideas, on the basis that they didn't try any, ignores all the revolutionary ideas that they had, and told us about, and sometimes even spent real money on, yet didn't try. Like the decades of cryogenic depot studies and advocacy, for example. Or ULA's work with XCOR on a LH2 piston-pump engine. Or DTAL and other cis-lunar studies.
Quote from: JEF_300 on 08/24/2024 05:42 amQuote from: meekGee on 08/23/2024 05:04 amWho do you think is left in that company that is capable of a brand new, revolutionary, from-the-ground-up project?To suggest that ULA are incapable of revolutionary ideas, on the basis that they didn't try any, ignores all the revolutionary ideas that they had, and told us about, and sometimes even spent real money on, yet didn't try. Like the decades of cryogenic depot studies and advocacy, for example. Or ULA's work with XCOR on a LH2 piston-pump engine. Or DTAL and other cis-lunar studies.Heresy, I know.But any company that doesn't do anything for an extended amount of time, the people who can, they leave.It's not like the team is sitting there, preserved in statis, until the day management makes a decision to move. Engineering organizations are fragile and prone to erosion. Can't see why ULA would be immune.I'd dare tou to wait and see, but sadly it'll remain hypothetical - they'll never even try.