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The Variation of Radiative Heat Loss as a Function of Position for an Isothermal Square Twist Origami Radiator
- Publication Year :
- 2024
-
Abstract
- This research introduces an Origami-inspired dynamic spacecraft radiator,capable of adjusting heat rejection in response to orbital variations and extremetemperature fluctuations in lunar environments. The research centers around thesquare twist origami tessellation, an adaptable geometric structure withsignificant potential for revolutionizing radiative heat control in space.The investigative involves simulations of square twist origami tessellation panelsusing vector math and algebra. This study examines both a two-dimensional (2-D), infinitely thin tessellation, and a three-dimensional (3-D), rigidly-foldabletessellation, each characterized by an adjustable closure or actuation angle “φ”.Meticulously analyzed the heat loss characteristics of both the 2D and 3Dradiators over a 180-degree range of actuation.Utilizing Monte Carlo Ray Tracing and the concept of “view factors”, the studyquantifies radiative heat loss, exploring the interplay of emitted, interrupted, andescaped rays as the geometry adapts to various positions. This method allowedfor an in-depth understanding of the changing radiative heat loss behavior asthe tessellation actuates from fully closed to fully deployed. The findings reveal asignificant divergence between the 2D and 3D square twist origami radiators.With an emissivity of 1, the 3D model demonstrated a slower decrease in theratio of escaped to emitted rays (Ψ) as the closure/actuation angle increased,while the 2D model exhibited a more linear decline. This divergence underscoresthe superior radiative heat loss control capabilities of the 2D square twist origamigeometry, offering a promising turndown ratio of 4.42, validating the model’sefficiency and practicality for radiative heat loss control.Further exploration involved both non-rigidly and rigidly foldable radiator models.The non-rigidly foldable geometry, initially a theoretical concept, is realizedthrough 3D modeling and physical prototyping, demonstrating effective foldabilityand radiative heat loss control. The rigidly foldable model, enhanced withsophisticated techniques for increasing 3D height, showed full actuationcapabilities in a physical prototype, confirming its practical application potential.The research also extends to derivative geometries such as “Star Twist”,“Sloped-Edge Twist”, “Octa Twist”, and “Min-core Square Twist”. Extensivesimulations for these geometries are conducted, exploring their potential foradvanced thermal management systems.In conclusion, this research significantly advances the understanding of squaretwist origami geometry in radiative heat loss control. The study highlights thedistinct behavior and advantages of origami-based designs over conventionalradiators, demonstrating efficient thermal management capabilities andadaptability for space exploration. These findings illuminate the path towarddynamic heat rejection in future space missions, powered by origami radiatortechnology, and open avenues for further optimization and enhanced thermalefficiency.
- Subjects :
- Aerospace Engineering
Aerospace Materials
Acoustics
Alternative Energy
Aquatic Sciences
Artificial Intelligence
Astronomy
Astrophysics
Atmosphere
Automotive Engineering
Automotive Materials
Atmospheric Sciences
Biomechanics
Biophysics
Civil Engineering
Cinematography
Communication
Computer Engineering
Design
Earth
Educational Technology
Educational Software
Educational Tests and Measurements
Educational Theory
Electrical Engineering
Engineering
Environmental Engineering
Environmental Science
Experiments
Fluid Dynamics
Geophysics
Geotechnology
High Temperature Physics
Industrial Engineering
Information Systems
Information Technology
Instructional Design
Materials Science
Marine Geology
Mathematics
Mechanical Engineering
Mechanics
Mathematics Education
Mining Engineering
Mineralogy
Naval Engineering
Nuclear Engineering
Nuclear Physics
Ocean Engineering
Petroleum Engineering
Quantum Physics
Range Management
Radiology
Radiation
Robotics
Remote Sensing
Solid State Physics
Sustainability
Systems Design
Theoretical Physics
Origami-inspired radiators
Spacecraft thermal management
Radiative heat loss control
Lunar environment thermal regulation
Adaptive thermal control systems
Square twist origami tessellation
Monte Carlo Ray Tracing
Deployable radiator systems
Thermal management in space exploration
Emissivity and thermal emission
Vector math in thermal simulations
Subjects
Details
- Language :
- English
- Database :
- OpenDissertations
- Publication Type :
- Dissertation/ Thesis
- Accession number :
- ddu.oai.etd.ohiolink.edu.dayton1708794831198931