Is Slow Travel Through Earth's Atmosphere Possible?

  • Thread starter Thread starter Mixolydian
  • Start date Start date
  • Tags Tags
    Atmosphere Travel
AI Thread Summary
Traveling slowly, such as at 20 MPH, through Earth's atmosphere from space may not result in burning up, as the primary cause of heating during re-entry is ram pressure rather than friction. Ram pressure, which increases with velocity, generates a shockwave that compresses air in front of an object, leading to heating. Even at lower speeds like 10 MPH, gases in the atmosphere exert pressure, but the risk of burning increases with speed. The discussion emphasizes that the faster an object travels, the more intense the heating effect due to ram pressure. Therefore, slow travel through the atmosphere is theoretically possible without burning up, as long as the speed remains sufficiently low.
Mixolydian
Messages
9
Reaction score
0
If you find a way to acctually travel (defining gravity of course) slowly like 20 MPH as you enter the Earth's atmosphere from space would you burn up? Is burning up just an effect because of the speed ships are coming in? Or, even if you were traveling at 10 MPH through the atmosphere would the gasses try to burn you up anyway?
 
Physics news on Phys.org
The burning is cause of friction. If you come in very slowly then you won't burn up.
 
The burning of meters is caused by ram pressure.

A meter traveling through the Earth's atmosphere produces a shockwave generated by *fast* compression of air in front of it. It is primarily this ram pressure (rather than friction) which heats the air which in turn heats the meteoroid as it flows around it.

Ram pressure increases with velocity. If you stick your hand out the window of a car on the autobahn, there's a lot of ram pressure pushing on your hand (actually you're pushing on the air). This is because your velocity is greater than if you were driving in a parking lot.

Or, even if you were traveling at 10 MPH through the atmosphere would the gasses try to burn you up anyway?
Really, those little mean gasses are trying to burn you up whatever speed you're going. The burn you up better the faster you go.
 
Last edited:
Thread 'Is there a white hole inside every black hole?'
This is what I am thinking. How much feasible is it? There is a white hole inside every black hole The white hole spits mass/energy out continuously The mass/energy that is spit out of a white hole drops back into it eventually. This is because of extreme space time curvature around the white hole Ironically this extreme space time curvature of the space around a white hole is caused by the huge mass/energy packed in the white hole Because of continuously spitting mass/energy which keeps...
Why do two separately floating objects in a liquid "attract" each other ?? What if gravity is an emergent property like surface tension ? What if they both are essentially trying to *minimize disorder at the interfaces — where non-aligned polarized particles are forced to mix with each other* What if gravity is an emergent property that is trying to optimize the entropy emerging out of spin aligned quantum bits
Back
Top