DSpace at TTU: Recent submissions
Now showing items 1-20 of 45524
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Lubbock County Year Book 1936
(Lubbock County Teachers Association, 1936)Shallowater Yearbook, 1936 begins on page 89 -
Shallowater ISD Yearbook, 2016
(Shallowater, Texas: Shallowater Independent School District, 2016) -
Shallowater ISD Yearbook, 2013
(Shallowater, Texas: Shallowater Independent School District, 2013) -
Set of Ring Sizers
(2019-07-08) -
object 1
(2019-07-03) -
Membrane Distillation Bags for Water Recovery in Trash Compaction and Processing Systems
(49th International Conference on Environmental Systems, 2019-07-07)The National Aeronautics and Space Administration’s (NASA) crewed spacecraft use containers to store waste derived from food, water, and other supplies. The trash bags occupy a large volume and present a significant ... -
Characterization of Laptop Fires in Spacecraft
(49th International Conference on Environmental Systems, 2019-07-07)An accidental fire involving the Lithium-Ion (Li-ion) battery in a laptop computer is one of the most likely fire scenarios on-board a spacecraft. These fires can occur from a defect in the battery that worsens with time, ... -
A Supported Liquid Membrane System for Steady State CO2 Control in a Spacecraft Cabin
(49th International Conference on Environmental Systems, 2019-07-07)Reducing the allowable concentration of carbon dioxide (CO2) in spacecraft is a critical need for NASA. The system now used on the International Space Station (ISS) is the carbon dioxide removal assembly (CDRA). While ... -
Risk Analysis Associated with Loss of Toxic Gases during Orion Landing and Recovery Operations
(49th International Conference on Environmental Systems, 2019-07-07)Mission, landing and recovery operations for the Orion crew module involve reentry into the Earth’s atmosphere and the deployment of three Nomex parachutes to slow the descent before landing along the west coast of the ... -
NASA Advanced Space Suit Pressure Garment System Status and Development Priorities 2019
(49th International Conference on Environmental Systems, 2019-07-07)This paper discusses the current focus of NASA’s Advanced Space Suit Pressure Garment Technology Development team’s efforts, the status of that work, and a summary of longer term technology development priorities and ... -
SPEXone polarimeter instrument thermal design
(49th International Conference on Environmental Systems, 2019-07-07)SPEXone is a 6u narrow angle, compact spectropolarimeter used to measure the characteristics of aerosols in the earth’s atmosphere. SPEXone is developed in a partnership between SRON Netherlands Institute for Space Research ... -
Chemical Lidar Science Payload for the Lunar Volatile and Mineralogy Mapping Orbiter
(49th International Conference on Environmental Systems, 2019-07-07)Understanding the lunar near-surface distribution of in-situ resources, such as ilmenite (FeTiO3), and volatiles, such as water/ice, is vital to future sustained manned bases. However, there is a large uncertainty in the ... -
The Mars Global Dust Storm of 2018
(49th International Conference on Environmental Systems, 2019-07-07)Mars is a dusty planet. Wind often lifts dust from the surface into the air forming clouds of dust at different locations across Mars. These dust storms typically last up to a couple days and grow to a few hundred km in ... -
Development and Validation of a Model to Account for Gaseous HCl and Aluminum Surface Interactions for Spacecraft Fire Safety Applications
(49th International Conference on Environmental Systems, 2019-07-07)Experiments and modeling were performed to determine the surface kinetics of gaseous hydrogen chloride (HCl) with aluminum surfaces subjected to various treatments. HCl and other acid gases are a spacecraft fire safety ... -
Development of a Custom Space Suit for Orion
(49th International Conference on Environmental Systems, 2019-07-07)This paper describes the most recent design and development activities of an IVA space suit designed for NASA’s Orion spacecraft. The suit is designed to be worn during launch, ascent, and entry, to protect crewmembers ... -
Optimized Phase Change Material Module for Thermal Regulation of Cycled Dissipative Units
(49th International Conference on Environmental Systems, 2019-07-07)Phase Change Materials are very good candidates to smooth temperature variations of units which undergo thermal cycling dissipations or external cycling thermal loads. They can also be used to damped fast but short thermal ... -
High Heat Flux Two-Phase Thermal Control System using Non-Uniform Capillary Evaporator
(49th International Conference on Environmental Systems, 2019-07-07)A two-phase flow with an external forced fluid flow, i.e., flow boiling, offers a high heat flux thermal control system. However, a technical barrier of a conventional flow boiling system, i.e., a plain surface, is a ... -
Advanced Liquid Cooling and Ventilation Garment Using Thermally Conductive Tubing
(49th International Conference on Environmental Systems, 2019-07-07)The Liquid Cooling and Ventilation Garment (LCVG) is a critical component of the space suit Portable Life Support System (PLSS). Improving the overall heat transfer coefficient (UA) of the LCVG without compromising astronaut ... -
A Thermally-Regenerated Solid Amine CO2 Removal System Incorporating Water Vapor Recovery and Ullage Air Recovery
(49th International Conference on Environmental Systems, 2019-07-07)The Thermal Amine Scrubber (TAS) flight experiment was developed under contract with NASA/JSC with the goal to demonstrate a TRL5 prototype advanced carbon dioxide (CO2) removal system based on a thermally-regenerated solid ... -
The “Space Activity Suit” – A Historical Perspective and A Primer On The Physiology of Mechanical Counter-Pressure
(49th International Conference on Environmental Systems, 2019-07-07)Since the 1950s, mechanical counter-pressure [MCP] has been investigated as a possible alternative design concept to traditional extra-vehicular activity [EVA] space suits. While traditional gas-pressurized EVA suits ...