Design and Analysis of Subsystems for a CubeSat Mission

The project addresses the science payload and performs thermal and spacecraft charging analysis of a three-unit CubeSat under design. An infrared spectrometer and a magnetometer are selected for the circular 680-km polar CubeSat mission. Thermal analysis using SolidWorks provides the CubeSat temperature distribution under anticipated ambient and internal heat fluxes. To achieve the design temperatures thermal control is recommended with coatings and internal insulation. Charging analysis is performed using the Spacecraft Plasma Interaction System (SPIS) software under anticipated ambient plasma conditions and shows no adverse impacts. Electromagnetic interference due to the onboard propulsion solenoids is assessed using COMSOL. The analysis guides the design of a 10-cm magnetometer boom

The Watershed Sustainability Index for the Reventazón River Watershed

This report, prepared for COMCURE, the Commission for the Preservation and Management of the Watershed of the Reventazon River, of Cartago, Costa Rica, examines the deterioration of the health of the Reventazon River watershed by means of the Watershed Sustainability Index. The watershed was divided into three regions based on altitude and environmental aspects, and the index was applied to the three regions individually. With the final results of the index for each region in mind, the report contains recommendations on ways to improve the sustainability of the watershed