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When a small meteor enters the Earth's atmosphere, it goes from traveling through a vacuum to traveling through air. Traveling through a vacuum is effortless -- it takes no energy. Traveling through air is another story.A meteor moving through the vacuum of space typically travels at speeds reaching tens of thousands of miles per hour. When the meteor hits the atmosphere, the air in front of it compresses[/b] 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. Re-entry temperatures can reach as high as 3,000 degrees F (1,650 degrees C)!Obviously, it would not be good for a spacecraft to burn up when it re-enters the atmosphere! Two technologies are used to allow spacecraft to re-enter:
Shepard was traveling at a much lower speed. shepard was propelled to the planet only by the power of the explosion on the normandy. since shepard survived we know that the speed shepard was propelled did not reach more than thousand miles per hour. much lower than the speed of a small metteor which is burned on entry to the planet.
shepard was wearing a modern body armor with the following capabilities.
If a bullet or other incoming object gets past the barrier, it contends with the more traditional body armor. A sealed suit of non-porous ballistic cloth provides kinetic and environmental protection, reinforced by lightweight composite ceramic plates in areas that either don't need to flex or require additional coverage, such as the chest and head. When the armor is hit by directed energy weapons, the plates boil away or ablate rather than burning the wearer.The last level of protection is provided by the suit's microframe computers, whose input detectors are woven throughout the fabric. These manage the self-healing system, which finds rents in the fabric and, assuming any such tear would wound the flesh underneath, seals the area off with sterile, non-conductive medi-gel. This stanches minor wounds and plugs holes in the suit that could prove fatal in vacuum or toxic environments. Soldiers are not always fond of the "squish skin" that oozes gel on them at a moment's notice, but fatalities have dropped sharply since the system was implemented.
the armor is similar to what space ships use: [color=rgb(51, 51, 51)">In ] technology, the surface of the heat shield melts and vaporizes, and in the process, it carries away heat. This is the technology that protected the [/color]Apollo spacecraft.
since shepard was traveling and a relative low speed the low heat that would have been generated would have caused the outer layer to boil away.
The leaks which have caused air to run away would have been sealed by the time shepard entered the atmosphere to prevent the entry of the dangerous gasses on the planet.
And finally. terminal velocity( the same kind of speed which relates directly to planet reentry) would have limit the speed of impact on the planet to something that would leave shepard body salvageable.
As to how project lazerus managed to return shepard memories to a dead person. i would leave that to technology and 2185-6. i hope this helps.
Edit : it is also important to note that the armors of mass effect can change the mass of the user to improve ressistance against biotics attacks. which also help with entering the athosphere by lowering the user mass.
Modifié par erezike, 21 novembre 2013 - 09:33 .
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