08/07/06 21:01:58 HBPGVRUb
>>665
The Command Module has a double structure, comprised of the cabin and the outer wall.
For heat shielding, the outer wall is made of stainless steel brazed honeycomb between steel alloy face sheets.
It protects the inside of the ship from the heat of the sun and the heat from atmospheric friction during re-entry.
The thickness of this outer wall varies from 0.5-inch (1.27cm) to 2.5-inch (6.35cm).
The cabin is built with a honeycomb structure of aluminum mated with an aluminum alloy.
The thickness of the wall of this gtin canh varies from 0.25-inch (6.35mm) to 1.5-inch (3.81cm).
Insulating fiber is placed between the outer wall and the cabin.
Phenolic, a synthetic material made by applying heat and pressure to layers of paper or glass cloth impregnated with synthetic resin,
coats the surface of the Command Module.
It shields the CM from frictional heat by melting during re-entry.
The thickness of this coating is 0.5-inch (1.27cm) all around, except for the bottom, which is 2-inch (5.08cm).
This brings the CMfs weight to 3000lb (1362kg). Thermal coating made of silver Mylar is applied on top of this.
This gives the CM the appearance of being wrapped in aluminum foil, giving the CM itfs reflective look.
具体的な素材の厚さの数値は無く、ハニカム構造の厚さが書かれているだけ。
外壁の厚さは6.35cmから1.27cm(ステンレスのハニカム)
内部居住区の壁の厚さは3.81cmから6.35mm(アルミのハニカム)
コーティング1.27cm(エポキシ・フェノール樹脂)
コーティングは、エポキシ1.8g/cm^3、フェノール1.25g/cm^3で、半々だとしても1.6g/cm^3で、
水に換算すると、2cmの壁になる。
ステンレスは7.9g/cm^3で3ミリとしても2.4cmの壁になる。
アルミは2.7g/cm^3で3ミリとしても0.8cmの壁になる。
でも5.2cmかな。
100MeV陽子線はやはり防げない。。。。