Task Integrated Radiation Analysis and Design Tools (Completed)
Last Published:  04/20/22 11:43:24 AM (Central)
Short Title: Design Tools
Responsible HRP Element: Space Radiation
Collaborating Org(s):
Funding Status: Completed - Task completed and produced a deliverable
Procurement Mechanism(s):

Develop and maintain an integrated tool set that collects the current best practices, databases, and state-of-the-art methodologies to evaluate and optimize human systems such as spacecraft, spacesuits, rovers, and habitats. Integrates design models & methodologies in support of evaluation/verification of design limits and design solutions to meet As Low As Reasonably Achievable (ALARA) requirements (NASA STD 3001, Vol 2). Tools support definition of reference environments for lunar surface and Mars surface (Constellation Design Specification for Natural Environments –DSNE) for vehicle assessment and design. Provides radiation community access to physics and transport research improvements.  Under configuration management with IV&V. Current customers include ESMD's Directorate Integration Office studies (i.e. LAT, MAT, LSOS); Lunar Surface Systems as well as Constellation's Orion and Vehicle Integration Office, Universities, industry, and SBIRs.  Partner with JSC for independent verification and validation.  Designed for utilization by future commercial customers concerned about transfer of proprietary data and results.

Deliverables and access to the Integrated Radiation Design Tools fills identified gaps documented in the HRP Integrated Research Plan (HRP-47065, Rev. A) to support the evaluation of effective shielding options by the engineering community:

  • Cancer - 11: What are the most effective shielding approaches to mitigate cancer risks?
  • Cancer - 13: What are the most effective approaches to integrate radiation shielding analysis codes with collaborative engineering design environments used by spacecraft and planetary habitat design efforts?
  • Acute - 6: What are the most effective shielding approaches to mitigate acute radiation risks, how do we know, and implement?

The design tools methods will specifically address the limitations associated with simplified geometry description (equivalent aluminum, three-layer transport interpolation, random orientation) and straight ahead transport.  The design tools increases fidelity by incorporating common spacecraft and user specified materials in the geometry description with ray-by-ray transport to minimize the uncertainties due to range-scaling of material thicknesses and material ordering.   Ray-by ray transport also establishes the basis to calculate the forward/backward neutron generation within vehicle/lunar surface geometries.  The back-scattered neutron environment will be calculated from the opposite sides of the vehicle for a crew member’s specific orientation at specific tissue locations.  This will increase our ability to evaluate the effectiveness of shielding systems.  In supporting the closure of these gaps, the Design Tool Project tools and models will support specification, implementation, verification, and monitoring of Spaceflight Human Systems Standard, Vol. 2 (NASA STD 3001, Vol. 2) radiation design and operational requirements with improved uncertainty quantification:



Funding Source:  Intra-mural competitive proposal (ICP) in response to ESMD’s Human Systems Research and Technology (HSRT) supplemental POP 2006 Guidance (POP 07 031105-GF document)

Resources (None Listed)
RiskRisk of Acute (In-flight) and Late Central Nervous System Effects from Radiation Exposure
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RiskRisk of Acute Radiation Syndromes Due to Solar Particle Events (SPEs)
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RiskRisk of Cardiovascular Disease and Other Degenerative Tissue Effects From Radiation Exposure and Secondary Spaceflight Stressors
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RiskRisk of Radiation Carcinogenesis
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