Traditional prostheses are incapable of fully aiding in human locomotion, resulting in amputees with asymmetric gait patterns, and small stride lengths. Powered prostheses can improve mobility, comfort, and quality of life for amputees of the lower extremities. This project focuses on the design and benchtop validation of a prototype of a powered ankle foot prosthesis. The PAFP utilizes a belt-pulley transmission, driven by an AK-60-6 actuator, and integrates an STM-32 micro-controller to facilitate communication among sensors which includes IMU, encoder, and motor controller in real time. A series of benchtop tests were conducted on the setup to validate the transmission efficiency, control and structural functionality. Experimental validation included backdrivability tests to assess compliance and loading tests to evaluate the motor's torque response to external load. Finally, position tracking was performed to replicate the natural ankle pitch angle profile observed in human gait.

Links and Results:
• GitHub Code of mathematical Modelling : Modelling
• Result : Report

PocketQubes are picosatellites with a form factor of 5 cm × 5 cm × 5 cm and a mass not exceeding 250 g. They are designed for specialized missions with limited time periods and typically contain only small volumes of payloads. Due to constraints in size and mass, the design process of PocketQubes can be challenging. This paper focuses on the cost-effectiveness of the design and development of Sanosat-2 for a Low Earth Orbit (LEO) mission using commercial off-the-shelf (COTS) components to provide a comprehensive understanding of the design process and applications. Following the de-orbit of Sanosat-1 on the Feb-7,2024 March, Sanosat-2 is designed with significantly improved sensing capabilities, primarily using optical payloads such as cameras and Sun sensors developed using COTS components at ORION Space Lab. The satellite is equipped with a camera for imaging, an Inertial Measurement Unit (IMU) for navigation, and Sun sensors as the primary payloads. Sanosat-2 aims to acquire orbital data through Sun sensors and the IMU for more advanced Attitude Determination and Control System (ADCS) missions. The satellite also functions as a digital amateur radio repeater. Furthermore, Sanosat-2 demonstrates the transmission of images captured from orbit via SSDV packets using GFSK modulation with a dipole antenna, and showcases deployable solar panels and passive ADCS control using magnets to highlight low-cost PocketQube fabrication. The PocketQube is expected to switch between different data rates for various payload data and imaging requirements. The data collected by Sanosat-2 will benefit researchers and industries in areas such as orbit modeling, network design for IoT applications, satellite constellation design, and the reliability assessment of COTS components for advanced satellite missions. The satellite data and behavior transmitted to the Earth station will enable the creation of digital twins for various LEO missions.