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Forum:	Exploration: Moon to Mars
Topic:	[Discuss] NASA's Artemis II mission (Orion)

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Your Reply: HTML is ON UBB Code is ON Smilies Legend	[QUOTE]Originally posted by Robert Pearlman: [B]It 4,800 nautical miles above the surface of the far side, according to Nujoud Merancy, Exploration Mission Analysis Lead at NASA's Johnson Space Center, in [URL=https://www.nasaspaceflight.com/2018/05/sls-block-1-revival-plans-getting-mobile-launcher-money/3/]an interview[/URL] with NASASpaceflight.com. <BLOCKQUOTE>[i]"[The trajectories] are all free-returns but the altitude that you target on your free return would adjust your mission duration," Merancy explained. "We are picking 4800 nautical miles, because that makes it an even number of days so you fly by [the Moon] during the middle of the crew day — it would be really sucky to fly by in the middle of crew sleep." "So we picked the altitude for the shortest time that was an even number of days," she continued, "so four days out, four days in, which puts fly by right in the middle of the crew day, the same time they did TLI. That was the rationale for the altitude we've picked right now. If you wanted to do a longer mission, you just pick a further altitude but that does mean you're flying farther from the Moon when you go by. There's no real reason to do that right now."[/i]</BLOCKQUOTE>[/B][/QUOTE]
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