NASA Technology Area 07 Human Exploration Destination Systems Roadmap

Abstract

This paper gives an overview of the National Aeronautics and Space Administration (NASA) Office of Chief Technologist (OCT) led Space Technology Roadmap definition efforts. This paper will given an executive summary of the technology area 07 (TA07) Human Exploration Destination Systems (HEDS). These are draft roadmaps being reviewed and updated by the National Research Council.

Systems Analysis of In-Space Manufacturing Applications for the International Space Station and the Evolvable Mars Campaign

“…The lack of abort and resupply options for deep space missions presents a very significant logistics and risk challenge for future missions, and creates a situation that has never before been encountered in human spaceflight. [1][2][3]10 A. Duration vs. Endurance…”

Limitations of Reliability for Long-Endurance Human Spaceflight

“…Given the high cost associated with transporting materials from Earth to destinations beyond LEO, this high level of confidence must be achieved while minimizing the total mass of the system. [1][2][3][4] The concept of increasing the reliability of systems is commonly discussed as a means to reduce risk and mass by decreasing the probability that components or subsystems will fail during a mission and therefore reducing the number of redundant elements or spare parts that need to be carried in order to achieve a desired probability of success. 3 While increased reliability can have a positive impact on the supportability of a mission, the scale of reliability growth required for long-duration missions can be extreme, and increases exponentially as higher levels of mission confidence are desired.…”

“…New approaches must be developed and implemented to mitigate risk and enable Earth-independent human spaceflight. [1][2][3][4] Figure 1. Ratio of MTBF to mission endurance required to achieve a given POS, for a total number of units n ranging from 1 (i.e.…”

Supportability Challenges, Metrics, and Key Decisions for Future Human Spaceflight

“…Under these conditions, supportability will be a much more significant driver of space system lifecycle propertiesespecially cost and risk -than it has been in the past. [1][2][3][4][5][6][7][8] This paper presents an overview of supportability, including a discussion of the challenges presented by future missions and the relationship of supportability metrics to mission-level cost, performance, schedule, and risk. In addition, the set of decisions that must be made to determine a system's supportability strategy are discussed, along with their potential impacts on supportability metrics and various couplings between them.…”