Build & Test Prep
Table of Contents
Team Vision for Build & Test Prep Phase
The intent of this phase was to perform all tasks necessary to be ready to start manufacturing and perform tests after week two. In order to achieve this readiness, members of the team came back to RIT during winter break to optimize and address issues related to structural design. The main focus of this was to better locate the center of gravity to the designed location, and to justify the integrity of the main gear during landing impact. To this point, the team is ahead of schedule, looking at the proposed schedule. All materials have been ordered, aluminum parts have been sent to the Brinkman Lab for water jet cutting, the static thrust test fixture has been repaired, and test plans have been created.
This document summarizes all of the work done during winter break and through Week 1 of MSD II: P16121 MSD II Winter Break - Week 1 Summary
This document summarizes all of the work done during Week 2 of MSD II: P16121 MSD II Week 2 Summary
The following images display the aircraft after structural design and center of gravity optimization.
Here is the resultant Bill of Materials:
Test Plan Summary
The following link leads to test plans the team will utilize when performing tests, during, and at the end of, the manufacturing process. Note that these test plans are developed to ensure all engineering requirements are met, which have been based off of the SAE Aero Design rules.
Risk and Problem Tracking
Ensuring the structural integrity of the main landing gear during landing impact has been an ongoing problem that has been addressed by performing Explicit Dynamics impact simulation using ANSYS Workbench. This has resulted in a moderate risk when it comes to the structural integrity of the entire aircraft, as simulation shows stresses past the yield strength of materials used. The landing gear have been redesigned to accommodate larger bearing areas through bearing plates and to ensure no bearing surfaces are in contact with bolt threads. We have also refined the simulation parameters. Previous worse case scenario testing did not represent an achievable situation. The new parameters, while relaxed, represent a more reasonable understanding of what a 'worst case' might be. Below are documents and images displaying current problem tracking and risk analysis.
Plans for next phase
Observing the schedule, by the next phase, the team will have completed the thrust and electrical systems test, all remaining components will be ordered, and the fuselage, wing box, and wings, will be midway in their build.
Individual contributions are as follows: