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[[circled]] 3 [[/circled]]

Purpose:
[[circled]] 1 [[/circled]] Above atmosphere 
[[circled]] 2 [[/circled]] Point in right direction } state vector!
[[circled]] 3 [[/circled]] Exactly right speed      } 
  
-> Tank has just enough fuel to get shuttle to desired position at required speed (horizontal) 

At MECO, 
- shuttle separates from tank 
- Backs off slightly 
- Tank follows orbit (trajectory) back into atmosphere (tank isn't used again)

[[boxed]] VIDEO [[/boxed]]

Orbit 

Traj. of Launch [[image]]

If you did nothing else, you'd re-enter atmosphere:

[[image]]

↑Fire Small Orbital Maneuvering Engines
so... MECO: Strapped In Seats, Weightless
      Stay In Seats Until OMS-2
[[left margin]] Model [[/left margin]]
Show OMS Engines, & Describe
     +Pods
Then, Crew Unstraps & Puts Launch Stuff Away  Gets Out Orbit Stuff

Transcription Notes:
Minor formatting edits