**E178: Assignment 6** |[home](../index.md.html)|[syllabus](../syllabus.md.html)|[assignments](../assignments.md.html)|[labs](../labs.md.html)|[final project](../finalproject.md.html)|[flight data](../FlightData.md.html)|[getting certified](../RocketryCertification.md.html)| # Open Rocket Open Rocket is a Java app, but a group of dedicated volunteers have created installers for it. Go to [Open Rocket](https://openrocket.info/) to get a version that is appropriate for your computer and OS. There are some outdated hints for usage at [Some Hints for Open Rocket](../PDF/OpenRocketHints.pdf). Create an Open Rocket model of your DD Vulcanite. You may use either measurements of your parts or measurement of the Example Rocket. Measure either the sample avionics assemblies or your actual avionics assemblies, and include them as masses in your model. Record and report the model mass and center of mass as either measured by you or calculated by Open Rocket. Compare your measurements with the given values in the [Flight Data](../FlightData.md.html) for the [LOC Prercision Vulcanite](../FlightData.md.html#flightdatafiles/locprecisionvulcanite). # I140W-14A Flight Simulate a flight of your DD Vulcanite with an Aerotech [I140W-14A](https://www.thrustcurve.org/motors/AeroTech/HP-I140W/) two different ways: 1. Use Open Rocket and your measured mass and CM. 2. Use the model from Assignment 2 and approximate the I140W-14A thrust curve as you think appropriate. Compare your results with the actual flight data from the test flight on 11 February 2023 in the Flight Data page. # J270W-14A Flight Simulate a flight of your DD Vulcanite with an Aerotech J270W-14A two different ways: 1. Use Open Rocket and your measured mass and CM. 2. Use the model from Assignment 2 and approximate the J270W-14A thrust curve as you think appropriate. For ground conditions, use the likely weather conditions at 9 am in Lucerne Valley on Saturday, 9 March 2024. Compare your results from the two models with the GPS altitude data from the DD Vulcanite J270W-14A flight on 07/08/2023 in [2023-07-08-LogExcel.xlsx](../FlightData/DDVulcanite/2023-07-08_DDVulcanite_J270_14-37-34.xlsx). # Deliverables Your deliverables are: 1. A written report describing your process and results that must include: 1. A comparison of the rocket mass and center of mass as determined by you, with the given values in the flight data. 2. A graph plotting the results of your two models and actual data for _acceleration_ for the I140W-14A motor from liftoff past ejection. 3. A graph plotting the results of your two models and actual data for _velocity_ for the I140W-14A motor from liftoff past ejection. 4. A graph plotting the results of your two models and actual data for _altitude_ for the I140W-14A motor from liftoff past ejection. 5. A graph plotting the results of your two models and the GPS data for _altitude_ for the J270W-14A motor from liftoff past ejection. 2. The model file from Open Rocket that includes your runs. Standard report components, such as introduction, conclusions, and recommendations would be nice, but aren't required.