Comparison of Risk from Orbital Debris and Meteoroid Environment Models on the Extravehicular Mobility Unit (EMU)

Hoffman, Kevin ; Hyde, James L ; Christiansen, Eric L ; Lear, Dana M

关键词: ENVIRONMENT MODELS;    EXTRAVEHICULAR ACTIVITY;    EXTRAVEHICULAR MOBILITY UNITS;    FABRICS;    FAILURE MODES;    FINITE ELEMENT METHOD;    HYPERVELOCITY IMPACT;    RISK ASSESSMENT;    SPACE DEBRIS;    SURFACE PROPERTIES;    SHIELDING;   

RP-ID  :  JSC-E-DAA-TN75550

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

A well-known hazard associated with exposure to the space environment is the risk of failure from an impact from a meteoroid and orbital debris (MMOD) particle. An extravehicular mobility unit (EMU) “spacesuit” impact during a US extravehicular activity (EVA) is of great concern as a large leak could prevent an astronaut from safely reaching the airlock in time resulting in a loss of life. A risk assessment is provided to the EVA office at the Johnson Space Center (JSC) by the Hypervelocity Impact Technology (HVIT) group prior to certification of readiness for each US EVA. Need to understand the effect of updated meteoroid and orbital debris environment models to EMU risk.