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tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,457

Re: Artemis Launch Coverage

This web site offers an overview of the Artemis missions. It includes diagrams of the actual or planned flight paths.

https://www.rmg.co.uk/stories/topics/na … aunch-date

rmg stands for Royal Museums Greenwich

(th)

GW Johnson

Member

From: McGregor, Texas USA

Registered: 2011-12-04

Posts: 5,806

Website

Re: Artemis Launch Coverage

Those trajectories are exactly what I previously understood about SLS/Orion Block 1,  and amazingly close to what I analyzed for modeling propellant return via Gateway to LEO.  My 60,000 km apoapsis halo is gravitationally stable,  but required a slightly-higher dV burn to enter it at periapsis. 

Apparently that slight dV increase is too much for SLS/Orion Block 1,  so they went to the gravitationally-unstable 70,000 km apoapsis halo,  which requires frequent course corrections by Gateway just to stay in that orbit.  Without them,  it leaves the moon,  going into a far orbit about the Earth.

GW

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GW Johnson
McGregor,  Texas

"There is nothing as expensive as a dead crew,  especially one dead from a bad management decision"