Targeted Outcome: Phase 2005-2015, Safeguarding our Outbound Journey Determine Extremes of the Variable Radiation & Space Environments at Earth, Moon,

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Presentation transcript:

Targeted Outcome: Phase , Safeguarding our Outbound Journey Determine Extremes of the Variable Radiation & Space Environments at Earth, Moon, & Mars Step 5: Sun-Solar System Connection Roadmap Targeted Outcome to Capabilities to Implementation Measurements of atmospheric, ionospheric, magnetospheric & interplanetary environment enhancements & conditions of occurrence Determine relationships of trapped & SEP fluxes plus atmosphere & ionosphere changes with solar- interplanetary conditions Enabling Capabilities & Measurements Assimilative & theoretical models to provide linkage between observables & near term plus future environmental enhancements Implementation Phase 1: Required Understanding Variability of Space Environments: at & between Earth, Moon & Mars CME Associated Planetary & Interplanetary Radiation Responses What Processes Lead to Extreme Environments? High Speed Stream Associated Radiation Responses Causes of Surface, Atmosphere, Ionosphere & Magnetosphere Environment Enhancements Internal Processes of Magnetospheric Radiation Enhancements Current Missions: Timed, Soho, ACE, Cassini, Cluster, etc.: Extend environment data bases & inform on current environment conditions in support of model development & testing LWS Missions: SDO, RBSP, ITSP & Sentinels to provide new environmental measurements and provide the data for new model and theory development Mission D: To collect observations of what … at where … Model Development: To provide linkage between spatial regions plus source-response relationships Theory Program: To understand responses of planetary (Earth, Moon, Mars) & interplanetary environments to solar and internal drivers Rocket Campaigns: Provide upper atmosphere and lower ionosphere responses to energy inputs Measurements needed from planetary atmospheres through interplanetary medium

SAFEGUARD OUTBOUND JOURNEY Environment Issues Associated with Earth to Moon Traversal Transport from Earth to Moon Preparation of crew transport vehicle in Earth orbit? Yes:Then bring crew to vehicle and prep at LEO (Low Earth Orbit) No:Launch from ground to LEO as initial step with transfer burns following Transport from LEO through magnetosphere to cislunar space Lunar orbit capture Transport from Lunar orbit to surface Whole ship or lander only? Determines different environment requirements - surface only or surface plus orbiting unit Liftoff from surface Transport from cislunar space to low Earth orbit through magnetosphere All the way to Earth surface? No:Leave crew transport vehicle in LEO and use reusable launch vehicle to descend to Earth? Yes:Descend in transport vehicle to surface

SAFEGUARD OUTBOUND JOURNEY (Cont.) Environment Issues Associated with Earth to Moon Traversal Space environment hazards of LEO crew transport assembly and preparation Radiation effects on assembly workers and crew Cosmic rays and high energy SEP’s LEO edge of inner zone protons and electrons (for EVA) Communications effects of ionosphere Atmospheric drag and Atomic Oxygen issues EVA’s Yes Vehicle/Astronaut charging and radiation dose as hazards No (no EVA) Launch from ground to LEO (Low Earth Orbit) as initial step Transport from LEO through magnetosphere radiation belts to cislunar space with occassional moderate energy bursts in plasma sheet plus SEP exposure Lunar orbit capture communication issues and radiation exposure Transport from Lunar orbit to surface communication issues and radiation exposure Surface dwelling Radiation exposure, communications issues, contamination by dust and charged dust

Liftoff from surface Communication issues Transport from cislunar space to low Earth orbit through magnetosphere Same as outbound trip All the way to Earth surface? No:Extended radiation and SEP esposure while at LEO Yes:Communications and atmospheric variability issues SAFEGUARD OUTBOUND JOURNEY (Cont.)