When meterior or some thing like that comes to earth it burns into ashes, but why dont the rockets sientist send does not burn
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****Heyy friend here is ur answer****
When the meteor hits the atmosphere, the air in front of it compresses incredibly quickly. When a gas is compressed, its temperature rises. This causes the meteor to heat up so much that it glows. The air burns the meteor until there is nothing left.
In case of rocket On ascent there are two factors that keep rockets from overheating. First, the rocket starts in the densest part of the atmosphere with minimal velocity. Launch vehicles generally tend to quickly leave the densest atmosphere before pitching over to build horizontal velocity.
The second effect is control. On ascent launch vehicles generally fly a "gravity turn" in which they aim to point their nose along the relative wind vector. This keeps compressive forces of the atmosphere (the dynamic pressure) compressing the vehicle rather than bending it. If a launch vehicle loses control during ascent they tend to fail at pointing into the wind. The product of the dynamic pressure and angle of attack is generally the way engineers quantify the limit that will determine when the bending moment on a launch vehicle due to aerodynamic forces will cause the rocket to fail structurally.
On reentry, vehicles quickly experience a high dynamic pressure. Due to the lack of active control, this dynamic pressure can quickly cause structural/heating failures in a vehicle.
Hope it was helpful:-)
When the meteor hits the atmosphere, the air in front of it compresses incredibly quickly. When a gas is compressed, its temperature rises. This causes the meteor to heat up so much that it glows. The air burns the meteor until there is nothing left.
In case of rocket On ascent there are two factors that keep rockets from overheating. First, the rocket starts in the densest part of the atmosphere with minimal velocity. Launch vehicles generally tend to quickly leave the densest atmosphere before pitching over to build horizontal velocity.
The second effect is control. On ascent launch vehicles generally fly a "gravity turn" in which they aim to point their nose along the relative wind vector. This keeps compressive forces of the atmosphere (the dynamic pressure) compressing the vehicle rather than bending it. If a launch vehicle loses control during ascent they tend to fail at pointing into the wind. The product of the dynamic pressure and angle of attack is generally the way engineers quantify the limit that will determine when the bending moment on a launch vehicle due to aerodynamic forces will cause the rocket to fail structurally.
On reentry, vehicles quickly experience a high dynamic pressure. Due to the lack of active control, this dynamic pressure can quickly cause structural/heating failures in a vehicle.
Hope it was helpful:-)
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