> For the complete documentation index, see [llms.txt](https://wiki.kscucf.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.kscucf.org/projects/knights-air-observation-satellite/kaos-0.md). # KAOS-0 KAOS-0, the first KAOS build, which flew inside a student rocket at the FAR competition in June 2022. KAOS-0 was the first build of the KAOS program and the only KAOS mission launched on a rocket instead of a high-altitude balloon. It flew as a payload inside Knights Experimental Rocketry (KXR) Team 2's rocket at the FAR competition in early June 2022. The rocket's recovery system, including its parachute, failed and the rocket crashed. The payload was destroyed and no data was recovered. ## Background KAOS started in summer 2021 as a remote-sensing CubeSat that would collect and transmit data on a high-altitude balloon flight. In spring 2022, KXR (UCF's student rocketry organization) offered to carry the club's CubeSat in Team 2's rocket at FAR, so the balloon plan was postponed to meet KXR's deadline. The build was named KAOS-0 days before delivery, as a dry run separate from the main project, which became [KAOS-1](/projects/knights-air-observation-satellite/kaos-1.md). ## Design * **Structure:** a 2U-class envelope sized to fit the rocket's 4 in avionics bay, built from screw-together 3D-printed PETG panels after a first snap-fit design failed. * **Electronics:** an Arduino Uno on a custom two-board PCB stack, with an SCD30 CO2, temperature, and humidity sensor, a BMP388 barometer, and SD card storage. GPS was dropped because the Uno ran out of memory, and a planned camera and neural network payload did not fit. * **Power:** supplied by the rocket's avionics.

## Flight On the final soldered PCB, the SD card and both sensors failed to initialize, and the cause was never found before delivery, so the payload most likely recorded no data. The rocket reached its target altitude, but its deployment mechanism and parachute failed and it came down without recovery. The crushed payload, still inside a section of the rocket airframe, was returned to the club in August 2022.

Even without data, the build was a useful dry run for KAOS-1. See [Post Flight Results](/projects/knights-air-observation-satellite/kaos-0/post-flight-results.md) for the lessons the team recorded.