R&D

Topic Improved coating performance of slot die coater for roll-to-roll system Slot Die Design Details Preliminary design of slot die and coating conditions using slot die coating theory. Optimization of slot die nozzle design by flow analysis of slot die movement conditions Flow visualization and coating performance quantification of slot die nozzle areas . Design […]

Prior research to develop segmented mirror optical system for space application Topics Hinge mechanism for deployable optical system Deployable mirror mount with rough alignment Hold down and release mechanism Details 1. Definition of detailed Design Parameters Design variables : reflector size, weight, arrangement Design conditions : deployment structure, material, weight, alignment function 2. Deployable mount

Topic Computational verification of satellite structural design feasibility under launch environment conditions. Random Vibration Profile 1 minute for each axis Orbit Definition Eccentricity : 0.007217 Semi-major axis : 7028.1km (Altitude 500~600km) Inclination : 1.71 rad (98 deg, TBD) Longitude of the ascending node : 2.88 rad (LTAN 11h-TBC) Argument of periapsis : 3.40 rad Mean

Developed qualification model of cubesat dispenser Features 3U and 6U volume Non-explosive separation Anti-rattling mechanism (US patented) Constant force ejection Aluminum composite panel https://youtu.be/cFKGhAQmB1o Qualification Overview Launch vibration test Thermal vaccum test Separation test Funding Ministry of SMEs and Startups of Korea

Conceptual design of multi-payload adapter for small launch vehicle Design Focus Conceptual design and CAD modeling Mechanical interface design of cubesat dispenser and sequencer Verification of design feasibility using static and dynamic analysis Multi-packaging modeling for small and micro-satellite ConOpts of multiple satellite packaging and separation https://youtu.be/Je6nqKRK0mo Funding KARI (Korea Aerospace Research Institute)

Research Focus Numerical analysis of operational noise of breakwater-linked wave turbine bypass system What is ‘Wave energy converter’? Wave energy converters use surface waves to generate power. For example, one type of wave energy converter generates power by using wave motion as a piston to drive air in and out of a chamber, with the

Developed engineering model of cubesat dispenser Features 3U volume Anti-rattling mechanism (KR patented) Space qualified door lock and release mechanism Explosive separation Environmental Tests Launch vibration test Thermal vaccum test Separation test Shock test Vibration Test Frequency Response Plot Thermal Vacuum Test Test Temperature Plot Multi-body Dynamic Simulation Prediction of cubesat ejection velocity Computational verification

Objectives System-level computational heat transfer analysis of solar inverter Prediction of temperature changes in MOSFET, DIODE, and IGBT devices according to changes in cooling conditions Design verification of active cooling system System Configuration PCB : Dielectric, Conductor MOSFET Diode DC-DC converter SMPS IGBT Power control unit System confuguration Heat Transfer Modeling Two-Resistor modeling for junction

Focus Computational analysis of dynamic friction behavior of gear/belt system Theoretical cause identification of belt tooth overshoot during driving Derivation of design conditions to prevent belt tooth overshoot Simplified CAD and FE Model CAD model of gear-belt system FE model of gear-belt system Nonlinear Material Properties Definition of nonlinear mechanical properties of belts Hyper elastic

Research Focus In order to theoretically verify the strength design feasibility of corrugated panels, the finite element method is used to quantify the stress and deformation that occur in corrugated panels under given load conditions. What is ‘Corrugate Panel’ ? Corrugate panel is a structural lightweight panel that combines the advantages of honeycomb panels, such