High Altitude Liquid Engine Test Stand Data Availability System

This project is a collaboration between Taylor Griffin, and Duncan Hunter. It is a system that allows for members of the OSU American Institute of Aeronautics and Astronautics (AIAA) club to view initially closed-circuit video footage from the population lab at any location and also allow the transfer of data collected from the liquid engine testing apparatus. The issue that our client, the OSU AIAA High Altitude Liquid Engine (HALE) team, brought to us is that though the HALE team is large and its success is the culmination of many team-members efforts, due to safety restraints only two members were allowed on-site to view engine test-fire video and data. Our task was to make these two things viewable remotely. As such we broke the project into two parts, the engine test footage would be transferred via a Capture and Stream system, and the sensor data which we transferred with our Data Transfer system. For the Capture and Stream System, on-site at the OSU propulsion lab the engine test will be captured by a series of IP-Addressed CCTV Cameras which feed in through an NVR. Our machine is designed to record or “capture” the video from the cameras and then transmit or “stream” the video to a viewing platform. The “Capture Rig” is the hardware that the capture and broadcast software will run off of. We are first using a Blackmagic Design Intensity Shuttle USB 3.0 to intercept the video signal from the NVR which collects the CCTV Camera feed and then passes that video out via the Open Broadcasting Software (OBS) to YouTube. We chose YouTube as our viewing platform because of its dependability and ease of setup in the future. Youtube has built-in features to receive live video from OBS, as such, it is ideal for easy set up in the future other HALE club members. For the Data Transfer system, while engine test operations are being conducted, data is collected from various sensors affixed to the test apparatus. The data consists of readings from temperature, pressure, and flow-rate sensors. This data goes through the following pipeline in order to be stored in an API-accessible database: The sensor data interface is a program that acquires sensor data from the LabView control system via a shared network drive. The API is a NODE.js RESTful web service that acts as an interface to the database. It allows programs to send GET and POST requests to fetch and store sensor data respectively. The endpoints are as follows: GET /readings/:startDate?/:endDate? POST /readings. The database is an instance of a MongoDB database. It contains a singular collection that stores the sensor data called “Readings”

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Artifacts

Name Description
Expo Poster A pdf of our original project poster describing our project and mission.   Download
Demonstration Video A Beta functionality demonstration video. Unfortunately due to COVID 19 we were unable to show the video capture on-site.   Link