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Instructions:<br>- Please register to be kept in the loop should a schedule change occur.<br>- Add this to your calendar for a convenient 15-minute reminder.<br>- Slides and confirmation of attendance will be available to download approximately 30 minutes prior to the event. Refresh this page if not yet visible.<br>- Please submit questions as they arise rather than waiting until the end.<br>- Enjoy!<br><br>Abstract: <br>This presentation will provide a very brief introduction to discrete event simulation and then provide detailed examples of how discrete event simulations were used to analyze the concept of operations for crewed lunar, asteroid and Mars exploration missions.<br><br>About the Presenter:<br>Grant Cates is a Senior Project Leader at The Aerospace Corporation. Prior to joining Aerospace in 2014, he was a Chief Scientist at SAIC. He retired from NASA in 2006 after 25 combined years in federal service, including 7 years on active duty in the Air Force. At NASA he served in varying capacities on the Space Shuttle Program, including Space Shuttle Columbia Vehicle Manager and Flow Director. He received a Ph.D. in Industrial Engineering from the University of Central Florida in 2004.

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Instructions:<br>- Please register to be kept in the loop should a schedule change occur.<br>- Add this to your calendar for a convenient 15-minute reminder.<br>- Slides and confirmation of attendance will be available to download approximately 30 minutes prior to the event. Refresh this page if not yet visible.<br>- Please submit questions as they arise rather than waiting until the end.<br>- Enjoy!<br><br>Abstract:<br>This presentation will give an overview of the proof-of-concept approaching being taken to quantify Crew Health and Performance (CHP) risk. By leveraging existing, robust tools for medical risk quantification (MEDPRAT), we present an approach for integrating CHP system capabilities in a manner consistent with other NASA risk characterizations that allows for trades on mass and volume.

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Abstract:<br>Understanding an individual’s metabolic rate is important in a wide range of terrestrial and extraterrestrial applications. For extraterrestrial applications, devices to measure metabolic rate should be compact, low power, and require little maintenance and/or calibration. This presentation discusses the effort to develop a new portable metabolic device (PUMA - Portable Unit for Metabolic Analysis) at the NASA Glenn Research Center. PUMA is a battery-operated, wearable unit to measure metabolic rate (minute ventilation, oxygen uptake, carbon dioxide output and heart rate) in a clinical setting, in the field or in remote, extreme environments. The critical sensors in PUMA that measure oxygen, carbon dioxide and ventilatory flow are located close to the mouth and sampled at 10 Hz to allow intra-breath measurements. The engineering efforts to develop PUMA will be presented, followed by limited validation studies of the final device. Finally, the application of PUMA and the underlying technologies for a range of applications will be presented.

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Instructions:<br>- Please register to be kept in the loop should a schedule change occur.<br>- Add this to your calendar for a convenient 15-minute reminder.<br>- Slides and confirmation of attendance will be available to download approximately 30 minutes prior to the event. Refresh this page if not yet visible.<br>- Please submit questions as they arise rather than waiting until the end.<br>- Enjoy!<br><br>Abstract:<br>“Spacecraft large enough for crew to move around inside them have traditionally used handrails and foot restraints to enable crew mobility. The mass of this hardware can become significant in large spacecraft such as the Common Habitat. Additionally, handrails and foot restraints in a multi-gravity habitat are trip hazards when the habitat is in a gravity environment. Further, ISS crew have noted risks of breaking ankles and wrists when using handrails for translation and have noted places where not enough handrails are present. Robotic gecko-derived grippers developed by JPL to retrieve satellites can be adapted to crew-worn pads that can adhere to surfaces to enable crew translation in microgravity. <br><br>This technology will help to eliminate the need for handrails and foot restraints for mobility in crewed microgravity spacecraft cabins. It has the potential to achieve significant mass reductions in future space habitats, with application to suborbital flight, LEO, cislunar space, interplanetary space, the Moon, and Mars. Additionally, it can prevent crew injury and discomfort. Project goals and objectives are to prepare gecko uniform prototypes for use in multi-gravity testing and conduct initial investigations into human factors of postures and motions needed for intravehicular activity (IVA) translation and restraint in multiple gravity environments, without the use of handrails or foot restraints. Gecko grippers have been tested for use as robotic end effectors terrestrially, on microgravity aircraft, and aboard the ISS.<br><br>Using the grippers as a body-mounted system to achieve IVA crew mobility is a new application that has not been pursued outside of this effort. This work will continue paper studies performed by NASA student interns by developing physical prototypes of spacecraft crew uniforms with gecko-derived body-mounted grippers. Clothing prototypes may include long sleeves, short sleeves, long pants, shorts, gloves, and/or booties equipped with gecko gripper pads. Forward work is to test these uniforms in a 1g environment to verify that the design does not introduce obstructions, trip hazards, or other consequences when used in terrestrial gravity. Based on the 1g test results, the uniform prototypes will be refined, and a test plan developed for testing at 0g, (1/6)g, and (3/8)g.

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• Dr. Robert Howard Biography
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• Lorraine Prokop's Biography
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• Lorraine Prokop's Biography
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Abstract:<br>A rapid mission analysis tool is developed to support the ongoing design of a Lunar Transit trajectory of the Power and Propulsion Element (PPE) between a Medium Earth Orbit (MEO) parking orbit and a lunar L2 southern Near Rectilinear Halo Orbit (NRHO). A parameterization is developed by which the Lunar Transit can be analyzed in the context of varying vehicle mass, solar electric propulsion (SEP) configurations, and solar array power output. A rapid and novel mission analysis tool enables a wide array of these trade analyses to be completed without the need for extensive computing resources or time.

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