August 29th: Launch at 8:33AM ET, two hour launch window. 42 day duration, splashdown on October 10thSeptember 2nd: Launch at 12:48PM ET, two hour launch window. 39 day duration, splashdown on October 11th
September 5th: Launch at 5:12PM ET, one and a half hour launch window. 42 day duration, splashdown on October 17th
Jim Free announces that target launch dates on the range for Artemis I are August 29th, September 2nd & 5th.
1) Demonstrate Orion's Heat shield at lunar entry conditions, will be traveling at Mach 32, much faster than a return from LEO. No test facility can simulate that.2) Teams will verify all of @NASA_Orion's systems want to make sure that Orion can deal with the thermal challenges, and the engines can operate. Need to understand any uncertainties.3) objective is to retrieve Orion after an ocean splashdown and do post-launch inspections 4) Certify the optical navigation system, deploy the CubeSats and share the mission with the public.Mission planners have started to build detailed timelines. Looking at long class missions but objectives will remain the same 4 major burns after TLI major burns, will also have two sets of burns to depart Lunar Orbit.Sarafin also recalls this is a test mission, the team is prepared to adapt along the way, we may not have some time to certify the optical navigation system. Next few weeks will be a flurry of activity.
Rollout for launch expected 11 days before launch, or August 18th.
Interesting point from the briefing: if they roll out in August but don’t launch by Sept. 5, they have to roll back to the VAB to service the flight termination system, and may not be able to complete that & roll out in time for the next launch window (Sept. 20 _ Oct. 4)
Why does NASA only have 20 days to launch after activating the flight termination system? Answer is that FTS must be independent of rocket, operating on its own battery power. Those batteries have a limited lifetime. And since there is no fail safe, it is conservative.
SFN Launch Schedule, updated July 21:Two hours launch window: 12:33-14:33 UTC = 8:33-10:33 am EDT.
... how does the tentative time of day for August 29 correlate with the Earth-Moon alignment for that day?
We continue to target the #Artemis I launch for no earlier than Aug. 29, at 8:33 a.m. EDT during a 2-hour window. Teams continue to progress through first time operations and have planned for additional opportunities on Sept. 2 & Sept. 5 if needed. go.nasa.gov/3PMnJ4w