Almost 3 years between flights!Further proof that Artemis is NOT a true exploration plan.
Quote from: page DEXP-3 (or page 33 of the PDF) of the FY24 NASA Budget requestThe FY 2024 President’s Budget Request manifest supports an Artemis II mission in 2024, Artemis III mission in 2025, Artemis IV mission in 2028, and Artemis V mission in 2029 with subsequent flights on a yearly basis.
The FY 2024 President’s Budget Request manifest supports an Artemis II mission in 2024, Artemis III mission in 2025, Artemis IV mission in 2028, and Artemis V mission in 2029 with subsequent flights on a yearly basis.
Revised Artemis timeline on page 7 of the FY24 NASA Budget summary presentation:https://www.nasa.gov/sites/default/files/atoms/files/fiscal_year_2024_nasa_budget_summary.pdfhttps://twitter.com/genejm29/status/1635328044046127106
Hard to see Artemis 3 staying in 2025 considering the HLS slip.
Silver lining: Might even out the cadence a bit.
That’s not an HLS slip.
Quote from: yg1968 on 03/13/2023 04:28 pmRevised Artemis timeline on page 7 of the FY24 NASA Budget summary presentation:https://www.nasa.gov/sites/default/files/atoms/files/fiscal_year_2024_nasa_budget_summary.pdfhttps://twitter.com/genejm29/status/1635328044046127106Hard to see Artemis 3 staying in 2025 considering the HLS slip.https://twitter.com/lavie154/status/1633196965780652032Silver lining: Might even out the cadence a bit.
I’m being nitpicky about NASA’s budget justification, but the “Artemis V mission in 2029 with subsequent flights on a yearly basis” part is untrue. The President’s FY24 Budget only goes out thru FY28. Someone should have caught that.
That doesn't show any slip. Per the NASA FY24 Budget, SpaceX has been meeting its HLS milestones on time.
Quote from: yg1968 on 03/13/2023 05:04 pmThat doesn't show any slip. Per the NASA FY24 Budget, SpaceX has been meeting its HLS milestones on time.The SpaceX schedule provided by the OIG certainly shows slip. If the budget request says otherwise, then I suppose it's a question of the SpaceX internal schedule vs. the enforceable NASA contract milestones. One is clearly behind from the version procured in 2020/2021, but the other may not be.
It's not related to the budget, it's the projected cadence and it is true
The SpaceX schedule provided by the OIG certainly shows slip.
What SpaceX schedule provided by the NASA IG?
The one that he provided in the the tweet above. Based on that tweet, the launch of the OFT-Starship is a year behind schedule.
Quote from: yg1968 on 03/13/2023 05:55 pmThe one that he provided in the the tweet above. Based on that tweet, the launch of the OFT-Starship is a year behind schedule.All I see is some Musk statement to Morgan Stanley about Starship, which is not HLS. I’m unaware of any NASA IG testimony or report showing a SpaceX (or other) schedule that Lunar Starship has slipped.May happen, but the IG will predict a slip in text, not chart a slip that’s already occurred.
Quote from: clongton on 03/13/2023 03:37 pmQuote from: yg1968 on 03/13/2023 01:17 pmAccording to the FY24 NASA Budget request, Artemis III is now December 2025 and Artemis IV is now September 2028 <snip> Almost 3 years between flights!Further proof that Artemis is NOT a true exploration plan.I am not sure that it's proof of that. Artemis IV has a lot of new elements to it including the EUS and ML2. It seems likely that Artemis III will slip into 2026. As Eric Berger mentioned before, it might be better to let Artemis III slip into 2026 to avoid a 3 year gap.
Quote from: yg1968 on 03/13/2023 01:17 pmAccording to the FY24 NASA Budget request, Artemis III is now December 2025 and Artemis IV is now September 2028 <snip> Almost 3 years between flights!Further proof that Artemis is NOT a true exploration plan.
According to the FY24 NASA Budget request, Artemis III is now December 2025 and Artemis IV is now September 2028 <snip>
Quote from: yg1968 on 03/13/2023 03:52 pmQuote from: clongton on 03/13/2023 03:37 pmQuote from: yg1968 on 03/13/2023 01:17 pmAccording to the FY24 NASA Budget request, Artemis III is now December 2025 and Artemis IV is now September 2028 <snip> Almost 3 years between flights!Further proof that Artemis is NOT a true exploration plan.I am not sure that it's proof of that. Artemis IV has a lot of new elements to it including the EUS and ML2. It seems likely that Artemis III will slip into 2026. As Eric Berger mentioned before, it might be better to let Artemis III slip into 2026 to avoid a 3 year gap.I still think NASA needs an Artemis 3.5 mission in 2027. Order another ICPS, have Orion rendezvous with HLS at the PPE+HALO Gateway, do a lunar landing.
Quote from: clongton on 03/13/2023 03:37 pmAlmost 3 years between flights!Further proof that Artemis is NOT a true exploration plan.We’ll see what causes, if any, NASA points to for slipping Artemis IV to 2028 in today’s press briefing and future hearings. But looking at the FY24 Orion/SLS budget, the bow wave moved right another year, so that would seem to be the cause. If that keeps happening, either Artemis missions or new developments or both will keep getting pushed out into the future to feed Orion/SLS.Missions and/or content will push out even further if House Republicans hold the FY24 budget flat or cut it.
At 58 minutes of the press conference, Bob Cabana explained it by saying that a lot has to come together for Artemis IV: EUS, ML2, Gateway and Gateway Logistics.
Artemis IV won’t happen on the schedule and in the way now laid out.Too many schedule threats:— Artemis III NET 2026— ML-2 completion — EUS completion— iHab completion— Sustainable lander completionToo many operational firsts/threats:— EUS first launch— Gateway first assembly— Sustainable lander first operationsIn a sane program architecture, you don’t pile risk on top of risk on top of risk in the same mission — you distribute risks over more missions. But with the extremely low mission rate imposed by Orion/SLS, the program does not have a sane architecture and is forced to choose between program schedule growth and mission risk growth. For now, the program is choosing the latter. (Another option would be to take content out of the program to match its mission rate.)For now, this gives the appearance that the program is holding together, but Artemis IV won’t hold. Either not all these new developments will be ready together on time and some will have to be launched later. Or if these developments are coming together on time, someone will restore sanity regarding how much risk this single mission is being expected to undertake. (Or an operational problem with one mission element will cascade to the others.)The Artemis III schedule will probably bounce out to the right by a couple or few years first and make all this moot. But even in the unlikely event Artemis III holds, it’s hard to see Artemis IV holding.
Artemis gapThe budget presentation included an updated schedule for the Artemis campaign of lunar exploration. That included a November 2024 date for Artemis 2, the first crewed Space Launch System/Orion mission, a date NASA officials gave in a March 7 briefing about the uncrewed Artemis 1 mission.That schedule shows a December 2025 launch date for Artemis 3, which will include the first human lunar landing of Artemis using SpaceX’s Starship lunar lander and spacesuits being developed by Axiom Space. “We’re still pressing to make Artemis 3 in 2025 and proceed on from there,” Bob Cabana, NASA associate administrator, said at the briefing.However, Artemis 4, previously projected for 2027, had slipped to September 2028 in the new manifest. That will also feature a lunar landing using Starship as well as use of the lunar Gateway. It will also be the first launch of the upgraded Block 1B version of SLS with additional payload capacity, which on that mission will be used to deliver the I-Hab habitation module to the Gateway.NASA officials at the briefing did not discuss the Artemis 4 slip, but Cabana mentioned the complexity of the mission. “We’re doing our very best to keep it on schedule,” he said. “Yes, it slipped a little bit, but there’s a lot that has to come together for Artemis 4, between the enhanced upper stage, the Gateway, Gateway logistics, the second mobile launcher. All of that has to work.”
Although I would tend to agree with you on this, Eric Berger's June 2022 article seemed to imply that a III.5 mission didn't really improve things and I never really understood why that was. https://arstechnica.com/science/2022/06/we-got-a-leaked-look-at-nasas-future-moon-missions-and-likely-delays/