![]() ![]() Because meteoroids contribute approximately half of the total Meteoroid/Orbital Debris (M/OD) risk to the potential loss of the Space Shuttle, this model should receive an immediate technical review and update. Observation 14: The meteoroid model currently used for Space Shuttle (Thermal Protection System (TPS)) risk analysis (SSP 30425) lacks a material distribution, includes no uncertainty bounds, has known flaws, and has no NASA entity designated for updating the model. Institute for Defense Analysis (IDA) report Change the micrometeoroid and orbital debris safety criteria from guidelines to requirements. Recommendation: Require the Space Shuttle to be operated with the same degree of safety for micrometeoroid and orbital debris as the degree of safety calculated for the International Space Station. Micrometeoroids and space debris… are among the most serious risk factors in Shuttle missions.įinding: The Board found markedly different criteria for margins of micrometeoroid and orbit debris safety between the International Space Station and Shuttle. Develop/determine meteoroid environment fluxes for Earth orbital and lunar regions.Ĭolumbia Accident Investigation Board report, volume I.Conduct and manage research to improve sporadic and shower meteoroid models in government and academia, including validation and uncertainty determination which are required inputs to Probabilistic Risk Assessments.Provide meteor shower forecasts to NASA spacecraft operators.Develop, maintain, and distribute a new and more accurate sporadic meteoroid model.Provide design, operational determination, and review assistance for NASA Programs/projects with respect to risk mitigation.Lead NASA technical work on the meteoroid environment coordinate the existing meteoroid expertise at NASA centers.The primary functions of the MEO are as follows: Understanding the meteoroid environment can help spacecraft designers to better protect critical components on spacecraft or avoid critical operations such as extravehicular activities during periods of higher flux such as meteor showers. While meteoroids have never been definitively proven to have destroyed a spacecraft, there have been several in-flight anomalies attributed to meteoroid impacts including loss of the Olympus satellite to control system failure induced by a Perseid shower meteor impact. space station modules, propellant tanks) or destroy components (i.e. Meteoroids impacting spacecraft are a quantifiable risk as they can puncture pressurized volumes (i.e. The objective of the MEO is to understand the flux and the associated risk of meteoroids impacting spacecraft traveling in and beyond Earth’s orbit. ![]()
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