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Flying around the earth at 17500 or 18000 miles an hour 300 miles up or so produces a centrifugal force that completely negates the effect of gravity. I'm curious what effect flying at lower speeds have.
For example, what effect does flying at Mach 5 at 100,000', Mach 10 at 150000' have on centrifugal force relative to earth's gravity?
drgondog GreenKnight121 GregP T ThomasP
Anything travelling in a circle is constantly changing direction. A stable orbit is were this change in direction is equal to the acceleration caused by gravity. If you slow down you go into a lower orbit and eventually re enter the atmosphere. Thats what astronauts do to come out of orbit and re enter, they fired the "booster" rocket to slow the whole thing down. The principles are quite simple, the actual calculations are "Clever stuff".No, what I was talking about had to do with centrifugal force counterbalancing gravity. If you travel at orbital velocity, the two balance each other out. The thing is, what happens if you go 1/5th orbital velocity, 1/2 orbital velocity? That's what I was getting at.
How do you even calculate for that?
The thing is, what happens if you go 1/5th orbital velocity, 1/2 orbital velocity? That's what I was getting at.
How do you even calculate for that?
It's pretty simple.No, what I was talking about had to do with centrifugal force counterbalancing gravity. If you travel at orbital velocity, the two balance each other out. The thing is, what happens if you go 1/5th orbital velocity, 1/2 orbital velocity? That's what I was getting at.
How do you even calculate for that?
#1 Most importantly!! Centrifugal Force DOES NOT EXIST. IT IS A FICTIONAL FORCE. It is a useful fiction to describe what is observed to be happening in a limited "Frame of Reference".No, what I was talking about had to do with centrifugal force counterbalancing gravity
Those are the principles of the basic mathematics. When it comes to an actual satellite how do you determine actual altitude, actual velocity, actual orientation. How do you establish the force applied by the various steering and booster rockets and from that how long they need to burn to get what you want. On a documentary years ago they said that early calculations were "off" by a small amount, because they were taking time as a constant, for bodies moving at orbit velocity, it isnt. Dot ask me how that changes things, I just understand that it does.It's pretty simple.
Mathematics of Satellite Motion
Because most satellites, including planets and moons, travel along paths that can be approximated as circular paths, their motion can be described by circular motion equations. By combining such equations with the mathematics of universal gravitation, a host of mathematical equations can be...www.physicsclassroom.com
Those are the principles of the basic mathematics. When it comes to an actual satellite how do you determine actual altitude, actual velocity, actual orientation. How do you establish the force applied by the various steering and booster rockets and from that how long they need to burn to get what you want. On a documentary years ago they said that early calculations were "off" by a small amount, because they were taking time as a constant, for bodies moving at orbit velocity, it isnt. Dot ask me how that changes things, I just understand that it does.
It makes sense. It makes my brain hurt - must be the reality.