Quote from: floss on 04/11/2015 08:49 pmSorry about this but with the merger of Orbital and ATK and present Russian difficulties is Ares I back on ? It was never off.. they've pitched it at every RFP NASA has put out since Constellation.
Sorry about this but with the merger of Orbital and ATK and present Russian difficulties is Ares I back on ?
Thanks I think it would be a very valuable asset for testing upgrades .
Quote from: floss on 04/12/2015 10:46 amThanks I think it would be a very valuable asset for testing upgrades .Testing upgrades to what? And Ares I is dead. What is still brought up once in awhile is an SRB based vehicle.
Advanced solid boosters and upperstage engines for SLS it might be handy to test them on a cheaper launcher before mounting them on a multi billion dollar manned launcher .
Quote from: QuantumG on 04/11/2015 10:17 pmQuote from: floss on 04/11/2015 08:49 pmSorry about this but with the merger of Orbital and ATK and present Russian difficulties is Ares I back on ? It was never off.. they've pitched it at every RFP NASA has put out since Constellation.Ares I != Liberty.
No Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .
Quote from: floss on 05/17/2015 02:38 pmNo Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .Heh, there's foreign and then there's foreign.
Quote from: newpylong on 05/15/2015 05:50 pmQuote from: QuantumG on 04/11/2015 10:17 pmQuote from: floss on 04/11/2015 08:49 pmSorry about this but with the merger of Orbital and ATK and present Russian difficulties is Ares I back on ? It was never off.. they've pitched it at every RFP NASA has put out since Constellation.Ares I != Liberty.No Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .
Quote from: floss on 05/17/2015 02:38 pmNo Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .We already have two of those: Falcon and Delta. And they exist today.
Quote from: ChrisWilson68 on 05/23/2015 04:34 amQuote from: floss on 05/17/2015 02:38 pmNo Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .We already have two of those: Falcon and Delta. And they exist today.Only Delta 4 Heavy is the in the ballpark of Ares 1 payload to LEO capability, and it (the world's most capable launch vehicle) is in danger of early forced retirement. Falcon 9 is not remotely in that ballpark.
Quote from: edkyle99 on 05/23/2015 02:08 pmQuote from: ChrisWilson68 on 05/23/2015 04:34 amQuote from: floss on 05/17/2015 02:38 pmNo Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .We already have two of those: Falcon and Delta. And they exist today.Only Delta 4 Heavy is the in the ballpark of Ares 1 payload to LEO capability, and it (the world's most capable launch vehicle) is in danger of early forced retirement. Falcon 9 is not remotely in that ballpark.All of that is irrelevant because the question was whether it makes sense to bring back Ares I as a replacement for Atlas V. All that matters is what alternatives there are for the missions Atlas V is doing.And I said "Falcon", not "Falcon 9". That includes both the Falcon 9 and Falcon Heavy variants, just as Atlas V includes a range of different variants with different performance and Delta IV includes medium and heavy variants. The Falcon Heavy variant exceeds the performance of all variants of Atlas V (and also Delta IV and Ares I).
Quote from: ChrisWilson68 on 05/23/2015 04:34 amQuote from: floss on 05/17/2015 02:38 pmNo Aries 1 all American finest engineering. Liberty French US collaboration.The point was that the politicians want a near term rocket to replace Atlas that has no foreign parts .We already have two of those: Falcon and Delta. And they exist today.Only Delta 4 Heavy is the in the ballpark of Ares 1 payload to LEO capability, and it (the world's most capable launch vehicle) is in danger of early forced retirement. Falcon 9 is not remotely in that ballpark. - Ed Kyle
Why didn't they consider using strap on solids like on Atlas or Delta to overcome the lack of power the second stage had to lift Orion? Were they overcompensating on safety?
Only Delta 4 Heavy is the in the ballpark of Ares 1 payload to LEO capability, and it (the world's most capable launch vehicle) is in danger of early forced retirement. Falcon 9 is not remotely in that ballpark. - Ed KyleQuote from: ChrisWilson68 on 05/23/2015 06:45 pmAll of that is irrelevant because the question was whether it makes sense to bring back Ares I as a replacement for Atlas V. All that matters is what alternatives there are for the missions Atlas V is doing. ... Quote from: Patchouli on 05/25/2015 05:15 amAn Ares I like LV would need a third stage about the size of a Centaur-G to perform the same missions as a heavy variant of Atlas or Delta though some missions probably could be done with the PAM-D from the Shuttle though you'd have to carry two or more in some sorta carrier to make use of the payload available.
All of that is irrelevant because the question was whether it makes sense to bring back Ares I as a replacement for Atlas V. All that matters is what alternatives there are for the missions Atlas V is doing. ...
An Ares I like LV would need a third stage about the size of a Centaur-G to perform the same missions as a heavy variant of Atlas or Delta though some missions probably could be done with the PAM-D from the Shuttle though you'd have to carry two or more in some sorta carrier to make use of the payload available.
Personally I prefer to put bounds on what "Ares I" means. It doesn't include any/all launchers with a segmented solid first stage and a hydrogen upper stage! Ares I is specifically a "crew launch vehicle" that works in combination with a "crew exploration vehicle" (e.g. Orion) that makes rendezvous in LEO with an "Ares V" cargo launch vehicle. AIUI this is the "Vision for Space Exploration."I don't believe that vision is entirely extinguished. To the contrary I think some influential people see SLS as being a first step along a path to that future. Doesn't pushing forward the EUS keep "alive" the 5.5m tank tooling needed to manufacture an Ares I second stage?
Ares I != Liberty.