Gap 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? (closed: transferred to NASA AES).
Last Published:  07/30/21 01:05:31 PM (Central)
Responsible Element: Space Radiation (SR)
Status: Closed
Closure Rationale
Domain transferred to NASA's Advanced Exploration Systems - Space Radiation Analysis Group.
Closure Documentation:
No Closure Documentation Available
Description

Initial State of Gap:

Radiation vehicle analyses and shielding design are labor intensive processes and are currently performed utilizing a non-standardized collection of various independent codes (and versions) and data bases tailored to meet specific needs.  Various levels of integration, verification, and validation exist.  With new exploration vehicles and habitats being designed for outside of low Earth orbit, shield optimization is essential in meeting vehicle radiation requirements to minimize crew exposure to both galactic cosmic radiation and solar particle events.   

In order to optimize vehicle and planetary habitat designs, engineers must be able to easily access and utilize computational models across a variety of disciplines throughout the design process as part of a systems approach to improve safety and performance. Tool development directly enables the validation of system design limits and monitoring requirements as specified in the Spaceflight Human Systems Standard, Vol. 2.

Much progress has been made in recent years under the Design Tool Project to provide an integrated and configuration managed tool set to the radiation community for the design and optimization of shield configurations and the verification of design requirements.


Approach:

Technology development supports the integration of current best practices utilized in vehicle radiation shielding analyses into a modular code platform with access provided to the engineering community through a maintained website. Inputs (e.g. environmental models and vehicle geometries) and outputs (e.g. mSv, mGy-eq, %REID) of the tool set must be directly relatable to NASA radiation requirements. Software development will follow NASA STD 7009 including help documents for website usage as well as links to publications describing the physics and mathematics behind the underlying theoretical and computational models. A description of model inputs, outputs, development status, verification, validation, uncertainty quantification, and region(s) of applicability will be provided in accordance with NASA STD 7009. The system will follow rigorous configuration management and undergo extensive and regular software testing. Independent verification and validation of models and design methodologies will be performed using operational dosimetry and science measurements. Development efforts will include enhancing computational efficiency to enable a rapid-analysis capability for trade studies evaluating a broad parameter space. Methodologies developed under Cancer gap 11 and 12 will be integrated into the framework supporting the analysis and optimization of design solutions and verification vehicle requirements. Once the “Targets for Closure” are complete, the framework will be maintained to provide state-of-the-art models and best practices in support of NASA mission requirements.

Target for Closure
  • Development of an integrated radiation design and analysis tool compliant with and relatable to NASA Standards, and accessible to the engineering community.  

  • Integration of optimization methodologies (Cancer 11), updated environmental models, and improvements in transport methods and databases (Cancer 12) into framework.

Mappings
Risk Risk of Radiation Carcinogenesis
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Multi-Disciplinary Research Plans

Documentation:
No Documentation Available