Quote from: envy887 on 12/23/2017 04:25 pmIridium and OneWeb are both good cases of the market wanting heavy LEO lift.I'm not sure how you can justify that statement with the examples given, since Iridium is using Falcon 9, and OneWeb has already contracted for a number of launcher types, such as Arianespace Soyuz, Virgin Galactic, and potentially Ariane 6.
Iridium and OneWeb are both good cases of the market wanting heavy LEO lift.
Iridium has about 72 tonnes of satellite+dispenser mass to launch to LEO as soon as possible. (Snip)
Quote from: envy887 on 12/23/2017 07:53 pmIridium has about 72 tonnes of satellite+dispenser mass to launch to LEO as soon as possible. (Snip)No they don’t. They have to pace the launches per their ability to commission them and decommission the first gen.)And the timing, capabilities, and cost of NG are wild guesses
Iridium has about 72 tonnes of satellite+dispenser mass to launch to LEO as soon as possible. If New Glenn was available and offered better $/sat launch value (which it could likely do even at $150M to $200M per launch), then Iridium would likely have gone with it, IMO.
Or booked both F9 and NG, perhaps.
NG is well positioned for constellation launches thanks to fairing volume, although at disadvantage because it won't fly at all for a couple years, and has no heritage.
FH will have a significant advantage in short term availability and flight heritage (thanks to F9).
...Arianespace and ULA now "get this". ...
The market that it was originally conceived to serve(GTO from Boca Chica, for instance) -- same market that NGLV (now Vulcan) and Ariane 6 were envisioning 3-5 years ago -- is disappearing. Reusability is making inexpensive launch available at a launch rate that the commercial space industry has never previously experienced. Tech advancement is making integrated constellations vastly more capable than most anything currently flying, and calling for lots of inexpensive launches of heavy LEO payloads. Commodity launches.
New Glenn has the advantages that it is pointed at the new market and will be affordable if not 'cheap', but has a distinct disadvantage that it isn't being built for high launch cadence.
Ariane 6 and Vulcan have a triple disadvantage in that they are not pointed at the right market, nor are they being built for high cadence, nor are they 'cheap' launch.
Your comment that ULA and ArianeSpace get this is not obvious*, and I suspect it isn't even accurate.
* Tory Bruno himself argued against the concept of commodity launches a few months ago.
QuoteNew Glenn has the advantages that it is pointed at the new market and will be affordable if not 'cheap', but has a distinct disadvantage that it isn't being built for high launch cadence.What about the New Glen design makes it not suitable for a high launch cadence? I’ve been assuming it could easily match SpaceX in launch cadence.
If NG's first stage is supposedly reusable 100 times, does that imply that they only build one or two and can launch repeatedly at a high cadence thereafter?
Or is there an inherent limitation in BO's "gradatim" approach that prevents then from upping the cadence too quickly?
Quote from: scdavis on 12/24/2017 02:49 amQuoteNew Glenn has the advantages that it is pointed at the new market and will be affordable if not 'cheap', but has a distinct disadvantage that it isn't being built for high launch cadence.What about the New Glen design makes it not suitable for a high launch cadence? I’ve been assuming it could easily match SpaceX in launch cadence.NG is not designed for RTLS recovery.
BFR will make other rockets obsolete, and this will include FH and NG.If SpaceX executes even close to plan, NG will be too little too late.
New Glenn is rated to place 45 tons in LEO with first stage fully recovered. That compares to perhaps 30 tons or so to LEO for FH (at a guess), if all three cores are recovered. So at first glance, New Glenn seems to outperform FH significantly on this front.
Gradatim is Latin for "gradual". How can you move "gradual quickly"?
Quote from: M.E.T. on 12/23/2017 02:44 pmNew Glenn is rated to place 45 tons in LEO with first stage fully recovered. That compares to perhaps 30 tons or so to LEO for FH (at a guess), if all three cores are recovered. So at first glance, New Glenn seems to outperform FH significantly on this front.Are you sure? I think the 45t of NG are expendable either.Just compare their first stage thrust, 22.8MN for FH, 17.1MN for NG.NG second stage is about 3x than FH, however.But the 3 core FH architecture should be more efficient, given the two lateral booster can be dropped leaving the center core still burning.So I suppose the 45t of NG can be compared to the 63.8t of FH and both are expendable.Or am I missing something?
Quote from: M.E.T. on 12/23/2017 02:44 pmNew Glenn is rated to place 45 tons in LEO with first stage fully recovered. That compares to perhaps 30 tons or so to LEO for FH (at a guess), if all three cores are recovered. So at first glance, New Glenn seems to outperform FH significantly on this front.Are you sure? I think the 45t of NG are expendable either.
Just compare their first stage thrust, 22.8MN for FH, 17.1MN for NG.
NG second stage is about 3x than FH, however.But the 3 core FH architecture should be more efficient, given the two lateral booster can be dropped leaving the center core still burning.
So I suppose the 45t of NG can be compared to the 63.8t of FH and both are expendable.Or am I missing something?
Be careful in reading the market - even the market (as defined by mission SC builds) doesn't even know sometimes.Case in point is how things changed to accept booster reuse. Once a few did it, things started to "rewrite" themselves rather fast.(Arianespace and ULA now "get this". Part of why things are the way they are now.)My read is that SX has caught enough attention that the market is "warping" around them, where other providers "pick off" missions on a case by case basis. For the moment, this is "good enough" to keep all busy. This moment can be timed entirely by SX's manifest "dwell time".The impact of a successful FH demo flight likely will be to relieve the "top end" payloads of having few options, but they'll be no rush to fly. It will put more schedule pressure on NG's program, and both A5/A6 programs will face margin pressure.What else could Musk do to pressure the industry? Perhaps those lunar "free return" missions might make things uncomfortable for other LV. Or offering inaugural flights of 20+ ton GTO SC? Anything that allows for a 1-3 FH flight rate per year would choke all comers.And after a good annual success rate, all other HLV might find themselves in a difficult spot justifying pricing, having to fall back on mission success rate and flight history for another year or so before that goes away too.As to a successful FH against a impending NG, should FH flight rate be to the 3-4 per year, it would allow Falcon to dominate across the board and set a tough act for NG to follow - because Falcon flight rate would always stay ahead of NG. Suggest that everything about BO would then become "gradatim".Falcon would simply dominate because it wouldn't be "gradatim" in flight rate. NG would likely be "second choice" because you had to wait for it.Those two soaking up global launch services would put the rest on short rations. (ULA's Centaur V decision makes sense in this context, as tight mission capability focus makes the "non generic" launch their forte. It's the "back filling" of manifest through cherry picking that becomes the hard part for them.) Expect that China/India slow down, and Russia has increasing LOM's. The rest become "the quick and the dead". Don't know where Europe will end up as I doubt Ariane N can handle the economics due to stubborn denial.Don't ever expect BO to be anything but "gradatim". Don't ever expect ULA to compete on "kg/$ to LEO".
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Quote from: hkultala on 12/24/2017 05:57 pm...Everyone likes reading posts of anonymous users on the Internet, but I would be more interested in an official statement. So is there a statement from BO about the expendable payload mass to LEO?And Merry Christmas to everyone