The control of heat exchange is vital for plant life in off-world, low pressure,
greenhouses. The ability to control this process was limited by methodology and
technology. Mathematical models, based on classical mechanics are created to enhance
our control capabilities. Data is collected using various sensors placed inside the Low
Pressure Test Bed (LPTB) Chamber at Kennedy Space Center. Data from those sensors
became non-linear at various pressures below 25 kPa. We introduced mathematical
calibration corrections and found that sensor data linearity could be extended to a greater
range of pressures. These calibration corrections allow for sensor calibration corrections
in operational environments that differ from the environment of calibration (normal Earth
atmospheric pressure).
","abstract_html":"<p>The control of heat exchange is vital for plant life in off-world, low pressure,</p> <p>greenhouses. The ability to control this process was limited by methodology and</p> <p>technology. Mathematical models, based on classical mechanics are created to enhance</p> <p>our control capabilities. Data is collected using various sensors placed inside the Low</p> <p>Pressure Test Bed (LPTB) Chamber at Kennedy Space Center. Data from those sensors</p> <p>became non-linear at various pressures below 25 kPa. We introduced mathematical</p> <p>calibration corrections and found that sensor data linearity could be extended to a greater</p> <p>range of pressures. These calibration corrections allow for sensor calibration corrections</p> <p>in operational environments that differ from the environment of calibration (normal Earth</p> <p>atmospheric pressure).</p>","abstract_has_math":false,"creators":["Hillhouse, Lendell E."],"institution":null,"degree_name":"Master of Science (MS)","degree_level":"Thesis","degree_discipline":"Space Studies","degree_department":null,"school":null,"contributors":["Vadim Y. Rygalov"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-01-01T08:00:00Z","date_published":"2013-01-01T08:00:00Z","updated_at":"2026-07-24T03:26:30Z","subjects":["Greenhouse, Mars, Thermal Control"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://commons.und.edu/theses/1547","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Vadim Y. Rygalov"]},{"key":"dc:creator","label":"Author","values":["Hillhouse, Lendell E."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Space Studies"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Greenhouse, Mars, Thermal Control"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://commons.und.edu/theses/1547"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The control of heat exchange is vital for plant life in off-world, low pressure,
greenhouses. The ability to control this process was limited by methodology and
technology. Mathematical models, based on classical mechanics are created to enhance
our control capabilities. Data is collected using various sensors placed inside the Low
Pressure Test Bed (LPTB) Chamber at Kennedy Space Center. Data from those sensors
became non-linear at various pressures below 25 kPa. We introduced mathematical
calibration corrections and found that sensor data linearity could be extended to a greater
range of pressures. These calibration corrections allow for sensor calibration corrections
in operational environments that differ from the environment of calibration (normal Earth
atmospheric pressure).
"]},{"key":"dc:title","label":"Title","values":["Air Circulation Under Reduced Atmospheric Pressures"]}]}],"canonical_facts":{"dc:contributor":["Vadim Y. Rygalov"],"dc:creator":["Hillhouse, Lendell E."],"dc:description.abstract":["The control of heat exchange is vital for plant life in off-world, low pressure,
greenhouses. The ability to control this process was limited by methodology and
technology. Mathematical models, based on classical mechanics are created to enhance
our control capabilities. Data is collected using various sensors placed inside the Low
Pressure Test Bed (LPTB) Chamber at Kennedy Space Center. Data from those sensors
became non-linear at various pressures below 25 kPa. We introduced mathematical
calibration corrections and found that sensor data linearity could be extended to a greater
range of pressures. These calibration corrections allow for sensor calibration corrections
in operational environments that differ from the environment of calibration (normal Earth
atmospheric pressure).
"],"dc:identifier":["https://commons.und.edu/theses/1547"],"dc:subject":["Greenhouse, Mars, Thermal Control"],"dc:title":["Air Circulation Under Reduced Atmospheric Pressures"],"thesis:degree_discipline":["Space Studies"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T03:26:30Z"}