Here's a fun copy of a Space 2010 paper Jonathan Barr of ULA wrote on Phase 2 Atlas development, I figured it was a relevant topic.
Quote from: jongoff on 09/16/2010 09:05 pmHere's a fun copy of a Space 2010 paper Jonathan Barr of ULA wrote on Phase 2 Atlas development, I figured it was a relevant topic.
Quote from: jongoff on 09/16/2010 09:07 pmQuote from: jongoff on 09/16/2010 09:05 pmHere's a fun copy of a Space 2010 paper Jonathan Barr of ULA wrote on Phase 2 Atlas development, I figured it was a relevant topic. Wow! DDT&E of Atlas V Phase II was $2.3 billion --- in 2004, before production moved to Decatur with the existing 5m tooling and transport infrastructure!"Although ULA has not yet undertaken a revised cost estimate, we believe that EELV Phase II should have a compelling cost advantage compared to other vehicle options in the same performance class." This is incredible. The cost could be underestimated by 200%, and it's the bargain of the decade. -Alex
Has USAF made any comment on the idea of building hydrocarbon tanks for Atlas V Phase 2 using Delta IV manufacturing capability? Specifically, wouldn't they have a concern that "cross contamination" of parts or training might lead to reduced Delta IV reliability? Is the idea to sequester the Delta IV line? Or would there no longer be a need for Delta IV at all?
Quote from: sdsds on 09/17/2010 06:37 amHas USAF made any comment on the idea of building hydrocarbon tanks for Atlas V Phase 2 using Delta IV manufacturing capability? Specifically, wouldn't they have a concern that "cross contamination" of parts or training might lead to reduced Delta IV reliability? Is the idea to sequester the Delta IV line? Or would there no longer be a need for Delta IV at all?I don't think you'd put hydrocarbons in the tanks at the factory. My guess is that both propellant tanks would get similar industrial cleaning processes, and the LOX tanks would get oxygen service cleaning. The LH2 tanks would need more external insulation, but once again that doesn't have much to do with the tank fabrication...I may be missing something (I've never worked with tanks that big before), but I think this is an unrealistic concern.~Jon
Quote from: jongoff on 09/17/2010 06:59 amQuote from: sdsds on 09/17/2010 06:37 amHas USAF made any comment on the idea of building hydrocarbon tanks for Atlas V Phase 2 using Delta IV manufacturing capability? Specifically, wouldn't they have a concern that "cross contamination" of parts or training might lead to reduced Delta IV reliability? Is the idea to sequester the Delta IV line? Or would there no longer be a need for Delta IV at all?I don't think you'd put hydrocarbons in the tanks at the factory. My guess is that both propellant tanks would get similar industrial cleaning processes, and the LOX tanks would get oxygen service cleaning. The LH2 tanks would need more external insulation, but once again that doesn't have much to do with the tank fabrication...I may be missing something (I've never worked with tanks that big before), but I think this is an unrealistic concern.~JonOops! Not that kind of cross contamination!! More metaphorical.The concern is that parts which should be installed on a hydrolox tank might get installed by mistake on a kerolox tank. Or that a technician might use a technique that was approved on the kerolox line when working on the hydrolox line.Two "nearly the same" things can be hard to keep separate.
The EELV upgrades do look good and affordable, but:1) NASA involvement would drive additional costs.2) You still need to pay for an Orion program, and other things covered in the SLS $3 b per year.3) The distinguished gentlemen from Utah, Loisianna and Florida would not be impressed.
Oops! Not that kind of cross contamination!! More metaphorical.The concern is that parts which should be installed on a hydrolox tank might get installed by mistake on a kerolox tank. Or that a technician might use a technique that was approved on the kerolox line when working on the hydrolox line.Two "nearly the same" things can be hard to keep separate.
Quote from: kkattula on 09/17/2010 05:58 amThe EELV upgrades do look good and affordable, but:1) NASA involvement would drive additional costs.2) You still need to pay for an Orion program, and other things covered in the SLS $3 b per year.3) The distinguished gentlemen from Utah, Loisianna and Florida would not be impressed.1) The development costs could quadruple, and still be less than SLS. 2) SLS does not pay for Orion. Orion is a separate $6-$10 billion development program. ?? 3) The distinguished gentlemen of which you speak are going to bring us a very big, very nice rocket that will hardly ever launch, for which we cannot afford payloads, and hence cannot afford exploration. If we do not disappoint these gentlemen now, we are likely to be disappointed for the next twenty years. Choose your risk. -Alex
Quote from: alexw on 09/17/2010 08:21 amQuote from: kkattula on 09/17/2010 05:58 amThe EELV upgrades do look good and affordable, but:1) NASA involvement would drive additional costs.2) You still need to pay for an Orion program, and other things covered in the SLS $3 b per year.3) The distinguished gentlemen from Utah, Loisianna and Florida would not be impressed.1) The development costs could quadruple, and still be less than SLS. 2) SLS does not pay for Orion. Orion is a separate $6-$10 billion development program. ?? 3) The distinguished gentlemen of which you speak are going to bring us a very big, very nice rocket that will hardly ever launch, for which we cannot afford payloads, and hence cannot afford exploration. If we do not disappoint these gentlemen now, we are likely to be disappointed for the next twenty years. Choose your risk. -AlexFlorida wants jobs launching rockets, HEFT includes a total of 9 HLV launches from 2018 to 2031. I don't believe anyone would call that job security.Alabama wants to have jobs managing development and lots of the actual engineering of a new rocket. With NASA involvement of EELV they get that plus the actual building of the rocket.
Quote from: Xplor on 09/17/2010 12:36 pmFlorida wants jobs launching rockets, HEFT includes a total of 9 HLV launches from 2018 to 2031. I don't believe anyone would call that job security.Alabama wants to have jobs managing development and lots of the actual engineering of a new rocket. With NASA involvement of EELV they get that plus the actual building of the rocket.Yeah, but would it really look anything EELV Phase 2 by the time they were done "helping"?
Florida wants jobs launching rockets, HEFT includes a total of 9 HLV launches from 2018 to 2031. I don't believe anyone would call that job security.Alabama wants to have jobs managing development and lots of the actual engineering of a new rocket. With NASA involvement of EELV they get that plus the actual building of the rocket.