Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
LOW COST REAL TIME ROCKET TELEMETRY SYSTEM DESIGN
Submission Author:
Gabriel de Almeida Souza , MG
Co-Authors:
Gabriel de Almeida Souza, Larissa Barbosa, Glênio Ramalho, Alexandre Zuquete Guarato
Presenter: Larissa Barbosa
doi://10.26678/ABCM.COBEM2019.COB2019-1585
Abstract
This paper is concerned with embedded avionics and telemetry design for a model rocket. The authors approach aiming to build a low cost, reliable and efficient system capable of satisfying EPTA (Propulsion and Aerospace Technology Team) mission requirements. Furthermore, to perform safely under diverse constraints, redundant mechanisms were designed, the system has redundant function sensors for controlling the recovery system and two ways for storing data. Also, operational protocols were developed in order to test the components and integration robustness, to assure reliability. In the launch and recovery protocols special care is given to safety and integrity of the systems and personnel. Aboard the rocket, based on centralized processing, the avionics unit is responsible for managing sensory data, more precisely velocity and rotation rates, GPS position, pressure, temperature, tactile and time coming from many peripherals. The flight management system must process, store and send information to the ground control. Included in the processing there is control of peripherals and recovery system status. The embedded manager actuates the recovery system when one of many thresholds is triggered, including displacement, pressure drop and attitude angle. The in-land control must capture and process in real time the received data, applying sensory fusion and filter algorithms, generating reliable tracking. A command may be sent from ground in case the mission supervisor perceives danger, to activate the parachute. After mission termination it is necessary to analyze the model rocket performance, evaluating flight data, this information can help further develop the systems.
Keywords
Avionics, data processing, real-time systems, Rocket Design
