Short Title:
Lander D&C
Responsible HRP Element:
Space Human Factors and Habitability
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Collaborating Org(s):
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| Human Health Countermeasures (HHC) Element |
| National Space Biomedical Research Institute (NSBRI) |
| Other: |
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Funding Status:
Completed - Task completed and produced a deliverable
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Procurement Mechanism(s):
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Aims:
- Examine the nature of anticipated sensorimotor difficulties (e.g., spatial disorientation, limits on terrain perception) as they affect the transition from automatic to manual control;
- Develop and evaluate advanced display countermeasures for enhancing situation and terrain awareness and for overcoming performance limitations caused by reduced visibility associated with lunar lighting, terrain reflectivity and the absence of atmosphere utilizing Draper Laboratory's fixed-base lunar lander cockpit simulator for full human-in-the-loop evaluation;
- Evaluate the effectiveness of the cockpit displays during human-in-the-loop manual control in the NASA Johnson Space Center (JSC) Tilt-Translation Sled (TTS) during "critical" and "hover" tasks testing the tilt-translation and tilt-gain illusions of altered acceleration sensitivity as it applies to lunar gravity following a period of weightlessness; and
- Perform a series of evaluations of the displays using the U.S. Army Aeromedical Research Laboratorys six-degree-of-freedom helicopter simulator as a lunar landing analog for replicating lunar lighting and the various parameters associated with dust "brownout" conditions.
This project will contribute to a better understanding of visual and vestibular conditions contributing to spatial disorientation during landing and the resulting effects on human manual control. We will have demonstrated display and control system interfaces to reduce pilot workload, improve situation awareness and mitigate spatial disorientation to ensure a safe crewed lunar landing. Finally, the work may also have terrestrial applications in mitigating the risk of helicopter accidents by suggesting new techniques to address problems associated with brownout during landing.
Other Resources
| Other Resources Needed?
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Yes
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Category:
Risk Characterization, Quantification
Subcategory:
Evidence or Risk Characterization
Description:
Final report detailing data obtained from research study shared with SHFH and HHC Element
Internal Customers:
Space Human Factors and Habitability
External Customers:
None
Category:
Risk Characterization, Quantification
Subcategory:
Evidence or Risk Characterization
Description:
This task contributed to closure of gap SM6.1 by providing evidence that computer modeling using proposed lunar landing profiles shows the potential for spatial disorientation during vehicle deceleration during landing on the lunar surface.
Internal Customers:
Human Health Countermeasures
External Customers:
None
Category:
Technology or Tool
Subcategory:
Computational Models or Simulations
Description:
This task contributed to closure of gap SM6.1 by providing the following tools:
1. Completed development of new cockpit display concepts. This included an Energy Contour Display System that shows the geographical area that can be reached using available fuel. The display system shows different perspectives for landing and options for landing sites.
2. Completed development of new vehicle control concepts that included integration of a translational velocity control mode to improve planetary lander hover dynamics.
Internal Customers:
Human Health Countermeasures
External Customers:
None