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21.
Gerhard Drolshagen 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2008,41(7):1123-1131
When the impact risk from meteoroids and orbital debris is assessed the main concern is usually structural damage. With their high impact velocities of typically 10–20 km/s millimeter or centimeter sized objects can puncture pressure vessels and other walls or lead to destruction of complete subsystems or even whole spacecraft. Fortunately chances of collisions with such larger objects are small (at least at present). However, particles in the size range 1–100 μm are far more abundant than larger objects and every orbiting spacecraft will encounter them with certainty. Every solar cell (8 cm2 area) of the Hubble Space Telescope encountered on average 12 impacts during its 8.25 years of space exposure. Most were from micron sized particles. 相似文献
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Szegö Károly Glassmeier Karl-Heinz Bingham Robert Bogdanov Alexander Fischer Christian Haerendel Gerhard Brinca Armando Cravens Tom Dubinin Eduard Sauer Konrad Fisk Len Gombosi Tamas Schwadron Nathan Isenberg Phil Lee Martin Mazelle Christian Möbius Eberhard Motschmann Uwe Shapiro Vitali D. Tsurutani Bruce Zank Gary 《Space Science Reviews》2000,94(3-4):429-671
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对于低速风洞中大模型、大迎角以及一般具有分离流的情况,本文采用壁压测量用影响函数法计算了洞壁干扰,并进行了实验验证.计算与实验表明,本文的计算是可靠的提供的曲线数据可供实际使用。 相似文献