does this mean that a 2x and 5x P135 Ariane 6 is pretty much confirmed? And does this indicate that Ariane 6 is evolvable, like SLS (moving between configs, but only using one at any time) or modular, like the EELVs?
^Technical conditions have been posted here:http://forum.nasaspaceflight.com/index.php?topic=31494.msg1118288#msg1118288Diameter is 3.5m, 135t propellant and 10t dry mass.
These numbers are outdated. They are from RFC (request for consultation).Now we have the RFP (request for proposal) documents.The new numbers:Length 11,5mDiameter 3,5mPropellant mass 145tCasing mass 8,7t incl. insulationSpacediver
Quote from: Oli on 01/14/2014 12:39 pm^Technical conditions have been posted here:http://forum.nasaspaceflight.com/index.php?topic=31494.msg1118288#msg1118288Diameter is 3.5m, 135t propellant and 10t dry mass.These numbers are outdated. They are from RFC (request for consultation).Now we have the RFP (request for proposal) documents.The new numbers:Length 11,5mDiameter 3,5mPropellant mass 145tCasing mass 8,7t incl. insulationSpacediver
Kerosene systems are cheaper than the alternative, but they don't seem to want to look at that.
Unless they actually looked at program lifetime costs for kerosene vs other fuels, they didn't really look at kerosene.
Unless they actually looked at program lifetime costs for kerosene vs other fuels, they didn't really look at kerosene.I am sure that using propellants they are familiar with is cheaper at the beginning, locking yourself into a more expensive system to save some upfront costs is not a wise decision.
Methane, kerosene, solid and LH2 all were similar in recurring cost.
This is one of the amazing statements I have seen in quite a while.
Quote from: M129K on 01/17/2014 09:45 pmMethane, kerosene, solid and LH2 all were similar in recurring cost. This is one of the amazing statements I have seen in quite a while.
Quote from: DandermanUnless they actually looked at program lifetime costs for kerosene vs other fuels, they didn't really look at kerosene.There are numerous documents proving otherwise.
Kerolox has been shown to be the cheapest alternative internationally.
You folks talking Human potential or just cargo, just stepped in here, please forgive?