Ryan Chacko is an undergraduate Aerospace Engineering student at Texas A&M University who joined the Optical and Bio-Sensing Laboratory in January 2026. His research focuses on developing advanced testing platforms for wearable biomedical sensing technologies. Ryan is currently working on phantom body systems designed to simulate realistic physiological conditions, including controlled fluid-driven pulsations that replicate cardiovascular signals for device validation and performance evaluation. These systems provide controlled and repeatable environments for testing wearable sensors and improving their reliability. Through his work in the lab, Ryan is developing hands-on experience in microcontroller integration, electronics assembly and PCB soldering, mechanical design using SolidWorks, and wearable device prototyping and testing. His long-term goal is to apply these engineering skills to the development of advanced life support and monitoring technologies, including Portable Life Support Systems (PLSS) for human space exploration.