Hello everyone, As you might know, Carleton University InSpace <https://www.cuinspace.ca/> is a rocketry design team based out of Ottawa, Canada and we are adopting the use of NuttX for both our telemetry system and our hybrid rocket motor control system this year. We would like to invite you to our preliminary design review (PDR), which is an opportunity for our team to showcase our initial designs and seek feedback from industry professionals, alumni and academics. We know that the NuttX community is international, so you will be able to join us virtually using Microsoft Teams. This event will be 3 hours long on *November 15th* from *6:00PM - 9:00PM EST. *There will be several student presenters, including myself, who will present the avionics systems designs for the 2024-2025 academic year. We aim to leave lots of time for questions and feedback about our designs. Feedback given during these PDRs are critical for making our designs flight-ready for competition in the summer. We have a very limited timeline because of our academic responsibilities, and manufacturing of our electronics will take place before the end of December, hence the need for lots of feedback.
Our aim with this invitation is to have several attendees from the NuttX community who can provide feedback on both our software and hardware designs. We want to make sure that we are leveraging all of NuttX's features and not overlooking any support or lack of support for certain devices and features. *Project descriptions:* Our first project is a flight computer telemetry system. It will use an STM32H743 MCU on a single board with several peripheral sensors including a GPS, IMU, barometric pressure sensor, temperature sensor and current/voltage sensors for battery monitoring. The system will transmit flight state data over LoRa radio at 433MHz by interfacing with a student designed radio board. It will also log this flight data to a power-fail safe filesystem on an SD card in flight, then copy all logs to a FAT partition for easy extraction upon landing. The system is designed to have 72 hours of battery life and provide reliable downlink data transmission to our ground station systems. Our second project is a control system for our student designed hybrid rocket motor. A hybrid rocket motor is a motor which makes use of both solid fuel (paraffin wax) and a gaseous oxidizer (nitrous) as a propellant. Our team has historically only flown solid propellant motors which are commercially obtained, so it will be a huge first for the team. Nitrous is quite unstable when left for long periods of time inside an oxidizer tank, so we require stringent control mechanisms to be able to safely operate our plumbing system from several thousand feet away from the rocket. This is done via network control over a network bridge composed of Ubiquity liteBeam hardware. The control system on the rocket side and remote control side will be running NuttX. *How you can attend:* If you would like to attend our PDR virtually, please RSVP avion...@cuinspace.ca so we can track attendance. We will send everyone who RSVPed an email with the Microsoft Teams joining details a few days prior to the PDR. You can find the detailed schedule below. If you plan on attending the PDR, please take some time a few days in advance of the 15th to review our detailed design document <https://github.com/CarletonURocketry/avionics-design-2024-2025/blob/gh-pages/CUInSpace%20Avionics%20Systems%202024%202025.pdf>. This document's purpose is to serve as written documentation of our systems' designs in as much detail as possible. You can refer to this during our PDR, and also use it to come up with any questions you may want to pose in advance. If you can't attend the PDR, you are still most welcome to read our design document and provide us with written feedback. I don't want to clutter the NuttX forums with our design review outside of this initial invitation, so please provide your feedback to avion...@cuinspace.ca. Note that the document is still a work in progress because of our limited student schedules, and will receive a large number of updates in the next few days leading up to our PDR. I would recommend checking on it around the 11th or 12th. Any information added to the document beyond that date will be equally presented at our PDR, so you will not miss anything. *Avionics PDR Schedule (November 15th, 6:00 - 9:00PM EST)* - 6:00PM - Admin Intro - 6:10PM - Avionics Deployment Electronics - 6:20PM - Telemetry System - 7:50PM - Hybrid Rocket Motor Control System Thank you for your consideration and InSpace hopes to see some of you there! We're very excited to be using NuttX! -- Matteo Golin Avionics Lead Carleton University InSpace
