J-2X is an essential engine for the SLS and manned-exploration programs,
Unfortunately for J-2X it is never likely to fly.
Quote from: TrevorMonty on 08/04/2017 02:45 pmUnfortunately for J-2X it is never likely to fly. I was thinking the same thing about New Glenn, Vulcan and NGL which is why I asked about an Ares1 redux.
J-2X is an essential engine for the SLS and manned-exploration programs, thus I'm assuming its production and use as the 2nd-stage engine. I'm also assuming a 5m 2nd-stage based on the Delta IV, or Vulcan, or a redesign of the Delta IV with common bulkhead, or a knockoff from elsewhere ~ whatever.Lastly, I'm using Antares' upper and orbital placement from prime contractor Orbital/ATK for GTO launches.
I'd say it's more of a nice have engine for some missions mostly ones needing the largest possible LEO payload vs absolutely necessary.Though for those missions the simpler and cheaper to produce J-2S would be more desirable I'm surprised they didn't go this route with the J-2X after Ares I was canceled.
October 20, 2009 (Eight years ago today.)Ares I-X rolls out to launch pad 39B at Kennedy Space Center.
And speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?
Quote from: sdsds on 10/28/2017 08:10 pmAnd speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?Nope, they're blank now.
Quote from: IanThePineapple on 10/28/2017 08:26 pmQuote from: sdsds on 10/28/2017 08:10 pmAnd speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?Nope, they're blank now.They are? They repainted the already poured SRB segments?
Quote from: Hog on 10/28/2017 10:07 pmQuote from: IanThePineapple on 10/28/2017 08:26 pmAnd speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?Nope, they're blank now.They are? They repainted the already poured SRB segments?They never were painted, they're plain white. The 'swooshes' were just to spice up the design in animations, similar to how the Falcon Heavy won't have the giant "S P A C E X" lettering going down its side, unlike the animation.
Quote from: IanThePineapple on 10/28/2017 08:26 pmAnd speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?Nope, they're blank now.They are? They repainted the already poured SRB segments?
Quote from: IanThePineapple on 10/28/2017 10:19 pmQuote from: Hog on 10/28/2017 10:07 pmQuote from: IanThePineapple on 10/28/2017 08:26 pmAnd speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?Nope, they're blank now.They are? They repainted the already poured SRB segments?They never were painted, they're plain white. The 'swooshes' were just to spice up the design in animations, similar to how the Falcon Heavy won't have the giant "S P A C E X" lettering going down its side, unlike the animation.I wasn't referencing any animations, but a real picture of one of the EM-1 segments. I finally refound the picture again, and whatever is on the one side of this particular segment I mistook for a painted on graphic, I'm not really sure what is on its side, its not like the rest of the pure white segmentsThanks for the correction.
Quote from: Hog on 10/30/2017 04:49 pmQuote from: IanThePineapple on 10/28/2017 10:19 pmQuote from: Hog on 10/28/2017 10:07 pmQuote from: IanThePineapple on 10/28/2017 08:26 pmAnd speaking of the big solids, can anyone say whether the swoopy stripes are still the plan of record for the SRB paint job?Nope, they're blank now.They are? They repainted the already poured SRB segments?They never were painted, they're plain white. The 'swooshes' were just to spice up the design in animations, similar to how the Falcon Heavy won't have the giant "S P A C E X" lettering going down its side, unlike the animation.I wasn't referencing any animations, but a real picture of one of the EM-1 segments. I finally refound the picture again, and whatever is on the one side of this particular segment I mistook for a painted on graphic, I'm not really sure what is on its side, its not like the rest of the pure white segmentsThanks for the correction.The SLS SRBs will have photommetry markings on them. https://www.nasa.gov/exploration/systems/sls/space-launch-system-solid-rocket-boosters-on-target-for-first-flight.html
The above pictured RSRM-V (Redesigned Solid Rocket Motor-5 comprised of 5 segments) arrived at KSC a few days ago (mid June/2020). Stacking due this Fall 2020, with a NET launch date of November 2021.(though the RSRMV has a max. stacked duration of 1 year) Artemis-1 SRB stacking will be an indicator of Artemis-1 launch date confidence.
Quote from: Hog on 06/14/2020 11:44 pmThe above pictured RSRM-V (Redesigned Solid Rocket Motor-5 comprised of 5 segments) arrived at KSC a few days ago (mid June/2020). Stacking due this Fall 2020, with a NET launch date of November 2021.(though the RSRMV has a max. stacked duration of 1 year) Artemis-1 SRB stacking will be an indicator of Artemis-1 launch date confidence.Pardon me for asking but what the h*ll is an Artemis 1 update doing in a long-defunct Ares I development thread?
Quote from: woods170 on 06/15/2020 12:27 pmQuote from: Hog on 06/14/2020 11:44 pmThe above pictured RSRM-V (Redesigned Solid Rocket Motor-5 comprised of 5 segments) arrived at KSC a few days ago (mid June/2020). Stacking due this Fall 2020, with a NET launch date of November 2021.(though the RSRMV has a max. stacked duration of 1 year) Artemis-1 SRB stacking will be an indicator of Artemis-1 launch date confidence.Pardon me for asking but what the h*ll is an Artemis 1 update doing in a long-defunct Ares I development thread?1) As soon as "NASA was told STS was going to work at 51.6º inclinations for ISS (early-mid 90's), options to increase Shuttle payload were investigated. A 5 segment SRM was studied as a method for clawing back and improving Shuttle performance to said orbit. Ares-1 since 2006 was to use a 5 segment solid first stage. Similar 5 segment SRM development for Ares-1 and Ares-V was carried over for SLS. Yes, the RSRM-V has been contemplated for 4 proposed/operational NASA vehicles. The words "Shuttle Derived" link STS, CxP and SLS in many ways.2) The picture I posted above of the "I'll pull, You push" segment transporter (nicknamed "Shirley") has over 1200 views in the 2-3 years since I posted it. Using that as a gauge of interest, coupled with the fact that in 2017, the delivery of the Shuttle/Constellation/SLS SRM segments was supposed to occur in 2018, I made a short, value added update to that 2017 post. Anyone reading this entire thread about Ares-1 development(like I just did) now knows about RSRMV, its history that precedes AND follows its inclusion in Constellation3) This entire thread is based on necroposts, over 95% of it is dated 2010. 4) I apologize for the obvious annoyance that this has caused you. A friendly PM (minus the cursing-please) could have assuaged your curiosity without compounding the exact issue you speak of. (I hear Chris B. in the background "Replying to a crap post only results in TWO (or 3) crap posts. RTM!)Attachments1)Ares-1 and Ares-V. Two vehicles that were to use 5 segment RSRM-V technology.