Falcon 9 / Dragon, First Commercial Man-Capable Spacecraft from low-Earth orbit

[moklo]

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This capsule is now increasing speed as it enters thicker and thicker air. So you see, reversed man gud sa launch--when a rocket launches, whether it is going faster or slower upwards, you ALWAYS head out to thinner and thinner air (i.e. leaving the atmosphere). Meanwhile, sa re-entry, bali na sad, you are going faster and faster into thicker and thicker air...now imagine the friction involved, and voila...heat.

-RODION

Wow nice explaination sir Rodz..Thanks... Inita cguro ana noh..

[yhokz101]

Wow nice explaination sir Rodz..Thanks... Inita cguro ana noh..

Specifically, shuttles face intense temperatures of about 3000 degrees Fahrenheit (about 1649 degrees Celsius). Blunt-body design helps alleviate the heat problem. When an object -- with blunt-shaped surface facing down -- comes back to Earth, the blunt shape creates a shock wave in front of the vehicle. That shock wave keeps the heat at a distance from the object. At the same time, the blunt shape also slows the object's fall [source: NASA].