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Once a booster get to 70,000M and is travelling at 7700km/hr how fast does the 2nd stage need to accelerate to achieve orbit?

Nov 18, 2020
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Once a booster get to 70,000M and is travelling at 7700km/hr how fast does the 2nd stage need to accelerate to achieve orbit at?
 
Jun 1, 2020
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The goal of any launch is to reach orbital velocity, roughly 18,000 mph, though less for higher orbits.

A 2nd stage greatly helps get this speed, requiring less fuel.
 
Nov 18, 2020
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Sorry the question wasn't clear.

How quickly does the second stage need to accelerate to achieve orbit? Is there a minimum acceleration they need to achieve to prevent re-entry.?
 
Jun 1, 2020
1,145
893
1,560
Sorry the question wasn't clear.

How quickly does the second stage need to accelerate to achieve orbit? Is there a minimum acceleration they need to achieve to prevent re-entry.?
The rate of acceleration is an engineering balancing act. They must weigh all the variables as necessary to get to that velocity.

A very high acceleration, for instance, will use less fuel but can cause more damage and may require special engines, etc.
 

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