It is in fact much more substantial than you assume:- New tankage manufacturing methods to substantially lower production costs.- Different length of tankage compared to A5.- New fairing manufacturing method to substantially lower production costs.- Increased fairing length (optional).- Completely new thrust-frame for core stage engine.- Completely new forward thrust-take-out skirt.- Completely new solid rocket boosters, based on Vega-C first stage. Composite casing in stead of steel casing.- Compared to the ESC-A upper stage of A5 the upper stage of A6 is completely new, with a new engine, new thrust-frame, new tankage, new avionics and new insulation. Compared to that the ESC-A upper stage of A5 was really just a mash-up of the Ariane 4 upper stage using the original A4 thrust-frame and LOX tank combined with a new LH2 tank.- Vulcain 2.1 engine features radically re-designed nozzle extension as well as re-designed turbines and increased chamber pressure.- Completely new launchpad and associated infrastructure.
Quote from: woods170 on 10/23/2017 06:44 amIt is in fact much more substantial than you assume:- New tankage manufacturing methods to substantially lower production costs.- Different length of tankage compared to A5.- New fairing manufacturing method to substantially lower production costs.- Increased fairing length (optional).- Completely new thrust-frame for core stage engine.- Completely new forward thrust-take-out skirt.- Completely new solid rocket boosters, based on Vega-C first stage. Composite casing in stead of steel casing.- Compared to the ESC-A upper stage of A5 the upper stage of A6 is completely new, with a new engine, new thrust-frame, new tankage, new avionics and new insulation. Compared to that the ESC-A upper stage of A5 was really just a mash-up of the Ariane 4 upper stage using the original A4 thrust-frame and LOX tank combined with a new LH2 tank.- Vulcain 2.1 engine features radically re-designed nozzle extension as well as re-designed turbines and increased chamber pressure.- Completely new launchpad and associated infrastructure.The shift in mfg methods is quite a big change, but I think the shift to composite SRB casings is even bigger. BTW Isn't the standard for the A6 US going to be the Vinci engine?On that basis the A5/A6 shift is more like that between Atlas 3 (pressure stabilized steel) to Atlas V (Aluminum with machined in stiffners). That I would expect to raise insurance rates, pending a track record being established. The puzzle is still why A5's rate is so close to F9, or vice versa.
Exactly. Ariane 5 to Ariane 6 is much more like Atlas III to Atlas V than Ariane 5G to Ariane 5 ECA.The new engine for the new upper stage of Ariane 6 is indeed the Vinci engine. It is "new" because it has never been used before on any other launcher, despite having been in development since 1998.Yes, you read that correctly: Vinci has been in development for the better part of 2 decades.
The puzzle is still why A5's rate is so close to F9, or vice versa.
So adding a few percent for satellite failure makes the premiums line up with the observed failure rates much better.
Except some do seem to go a lot longer than others before one of their vehicles goes bang. Russians, for example seemed to manage 100s of launches without a RUD.
Quote from: john smith 19 on 10/21/2017 11:20 amExcept some do seem to go a lot longer than others before one of their vehicles goes bang. Russians, for example seemed to manage 100s of launches without a RUD. As noted in the article that started this thread, insurance rates for Proton are 3x those for Ariane, and at risk of driving Proton out of the commercial market. No-one has "100s of launches" without a failure. Soyuz had about 150 launches without a failure in the 1980s. Delta 2 had about 100 successes in a row.
Jan Schmidt, the head of Swiss Re’s space underwriting division, said in an email obtained by SpaceNews that the decision to “cease Space underwriting with immediate effect” was driven by “bad results of recent years and unsustainable premium rates.”
Swiss Re leave the market...What this means for space sector?
Quote from: Tywin on 08/01/2019 05:42 pmSwiss Re leave the market...What this means for space sector?I would imagine with the increasing reuse footprint of SpaceX, there might be a shift where expendables might expect a raise in premiums, at least in the short term as the number of insurance providers is reduced. If Musk gets Starship to orbit, it will be interesting which insurance provider moves first to lower premiums for riding on Falcon9/Starship as that will signal a downward spiral on premiums for Starship riders. With higher expendable premiums, that means there will be a preference for expendable launchers that are in volume manufacturing, favoring RocketLabs with their expected monthly cadence. For smallsat launchers, if you are not in nearly monthly launch cadence before Starship goes commercial, you better be state backed and consign yourself to being beholden to government launches, and kiss that sweet startup IPO goodbye...
The insurance loss for the rocket and satellite represents the largest recorded loss in the space market, satellite analysis firm Seradata said.
“Insurance rates for both launch and in-orbit have been at historically low levels and ... need to increase significantly.”
I don't think insurance rates will make any difference at all for the rideshare market.
Using a third-party tug adds more uncertainty to a mission, which if you're insuring delivery to final orbit would have to be taken into account.
Rora said that while rate are increasing, he did not expect a return to the high rates of the early 2000s. “Even if there is a sharp increase today, the levels we will see are similar to those around 2009 and 2010,” he said, when launch plus one-year insurance rates were about 10%.
Quote from: gongora on 09/13/2019 03:34 pmUsing a third-party tug adds more uncertainty to a mission, which if you're insuring delivery to final orbit would have to be taken into account.That's another question I'd be interested in learning more about. Is there any information out there on the impact to rates for using a service like this irrespective of the launcher?
You know it’s a struggling business when its first gross profit in three years, likely to end up a net loss, is based on the lowest annual revenue in at least two decades.That’s where the world’s space insurers found themselves at the end of 2020. And 2021 began inauspiciously when Sirius XM Holdings filed a $225 million claim for the total loss of its Sirius XM-7 satellite