Browsing by Author "Mansour, Kamjou"
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Item Orion LAMS Laser Absorption Spectrometer for Human Spaceflight – Artemis 3 Flight Unit Build and Test Results(2023 International Conference on Environmental Systems, 2023-07-16) Pohly, Jason; Christensen, Lance; Mansour, Kamjou; Roe, David; Vaughan, John; Erb, CodyThe Orion Laser Air Monitor System (LAMS) is a tunable laser spectrometer that will monitor oxygen, carbon dioxide, and water vapor levels in the Orion Multipurpose Crew Vehicle (MCPV) cabin and in the space suit loop. LAMS, designed to be small, lightweight, and low power, can nonetheless accurately measure a wide dynamic range of analyte concentrations over relatively wide pressure and temperature ranges despite not using gas pumps, flow, or pressure controllers. Additionally, the LAMS hardware and electronics are capable of meeting stringent Crit-1R requirements for human life support. This paper is a follow-up to the 2020 ICES paper which covered flight unit build and testing results for the Artemis 2 mission. This paper covers design updates, flight unit build, and test results of the LAMS units for the Artemis 3 mission.Item Orion LAMS Laser Absorption Spectrometer for Human Spaceflight – Artemis 4 and 5 Design Updates and Flight Builds(2024 International Conference on Environmnetal Systems, 2024-07-21) Pohly, Jason; Roe, David; Erb, Cody; Mansour, Kamjou; Christensen, LanceThe Orion Laser Air Monitor System (LAMS) is a tunable laser spectrometer that will monitor oxygen, carbon dioxide, and water vapor levels in the Orion Multipurpose Crew Vehicle (MCPV) cabin and in the space suit loop. LAMS, designed to be small, lightweight, and low power, can nonetheless accurately measure a wide dynamic range of analyte concentrations over relatively wide pressure and temperature ranges despite not using gas pumps, flow, or pressure controllers. Additionally, the LAMS hardware and electronics are capable of meeting stringent Crit-1R requirements for human life support. This paper is a follow-up to the 2020 and 2023 ICES papers which covered flight unit build and testing results for Artemis missions 2 and 3. This paper covers design updates, flight unit build, and test results for the Artemis missions 4 and 5.Item Orion LAMS Laser Absorption Spectrometer for Human Spaceflight – Flight Unit Build and Test Results(2020 International Conference on Environmental Systems, 2020-07-31) Pohly, Jason; Christensen, Lance; Skow, Mary; Mansour, KamjouThe Orion Laser Air Monitor System (LAMS) is a tunable laser spectrometer that will monitor oxygen, carbon dioxide, and water vapor levels in the Orion Multipurpose Crew Vehicle (MCPV) cabin and in the space suit loop. LAMS, designed to be small, lightweight, and low power, can nonetheless accurately measure a wide dynamic range of analyte concentrations over relatively wide pressure and temperature ranges despite not using gas pumps, flow, or pressure controllers. Additionally, the LAMS hardware and electronics are capable of meeting stringent Crit-1R requirements for human life support. This is the first time a tunable laser spectrometer is being used for atmosphere monitoring and feedback control for ECLSS hardware in a manned spaceflight environment.Item Portable Tunable Laser Spectrometer (PTLS) for Human Exploration: Status of Flight Quality Lasers, Underlying Wireless Mesh Network, and Sensor Testing(50th International Conference on Environmental Systems, 7/12/2021) Christensen, Lance; Mansour, Kamjou; Fonseca, Benedito; Ning, Yuebin; Gupta, James; Gehant, Joseph; Eschbach, Susanna; Abbas, ZahraWe describe advancements toward a portable tunable laser spectrometer (PTLS) wireless mesh network that can be applied for human exploration. These include mid-infrared diode lasers with the requisite reliability and traceability to be used for critical applications, a wireless mesh network of PTLS instruments capable of near real-time monitoring of environmental gases over the spatial domain of a space station, and tests of prototype PTLS systems demonstrating their capability for gas-phase measurements using the new high reliability lasers.Item Portable Tunable Laser Spectrometer (PTLS) for Human Exploration: Update on Lasers and Mesh Networking(2023 International Conference on Environmental Systems, 2023-07-16) Christensen, Lance; Mansour, Kamjou; Hart, Alexander; Fonseca, Benedito; Ning, Yuebin; Wingar, Simon; Ponnampalam, Nakeeran; Tran, Tran; Rae, Rachel; McKinnon, Graham; Gupta, James; Razavipour, Ghasem; Jiang, Weihong; Barrios, PedroWe report on the development of a wireless network of sensors that measure spatial and temporal distributions of carbon dioxide, oxygen, and water vapor in human habitable vehicles for NASA exploration needs. Each sensor is a hand-held, portable tunable laser spectrometer (PTLS). Toward this goal, we report on realization of first-ever, high-reliability mid-infrared tunable diode lasers emitting at 2683 nm for measurement of carbon dioxide and water vapor. These lasers are a critical component of PTLS. We describe the development, verification, and validation of these lasers which demonstrate achievement of requisite reliability and traceability needed for critical applications. We also describe advancement of wireless network system software enabling individual PTLS sensors to be incorporated into a network distributed throughout a human habitation vehicle like ISS for monitoring trace gases oxygen, carbon dioxide, and water vapor.