Solid Rocket Motor Cutaway and Grain

thingiverse

It appears that you have provided a detailed plan for a lesson on solid rocket motors, specifically focusing on the design and function of the grain inside the motor. Here's a more detailed breakdown of the instructions: **Printable Models:** * Print one set of each component model (Motor Case, Insulation, Ignitor, and Grain) to be used as examples. * Print enough copies of the cross-sections of different grain configurations for students to work individually or in small groups. **Printing Settings:** * Motor Case: Print on paper or cardboard with a weight of 60-80 gsm (depending on your printer). * Insulation and Ignitor: Print on thin, transparent plastic sheets or cardstock. * Grain Cross-sections: Print on thin paper or vellum. **Online Resources:** * NASA website: For information on rockets and rocketry, as well as a pictorial history of rockets. * Bedford Astronomy Club webpage: For a concise explanation of the functions of both liquid rockets and solid rocket motors. * UK Space website: To showcase various designs and sizes for rocket motors from the 1950's and 60's. **Activities and Exercises:** 1. Introduction to Rockets: * Use online resources to introduce students to the basics of rockets and solid rocket motors. 2. Grain Configurations: * Distribute one grain cross-section per student or group. * Ask students to calculate scale, surface area, cross-sectional area, or mass of the grain (depending on the chosen activity). 3. Graphing Thrust v. Time: * Use the graphs provided by NASA or create a new graph using data from other sources. * Have students plot initial thrust vs. surface area as a class. 4. Research and Writing Assignment: * Ask students to hypothesize on the utility of their assigned grain pattern and thrust v. time graph in different situations (e.g., launching a satellite, intercepting an air missile). **Skills Learned:** * MS-PS3-1 Energy * MS-PS3-5 Energy * HS-PS3-1 Energy * HS-PS3-2 Energy * HS-PS1-4 Matter **Assessment and Rubric:** * Use measuring tools with accuracy and precision. * Evaluate mathematical computations, graphing skills, and communication of results. **References:** A list of online resources used in the lesson plan is provided at the end.