PDR File:
In Performance Test 1 Part 1, the team objectively evaluated the performance of team’s AEV in many aspects, such as weight, cost, energy consumption, center of gravity, balance, stability, capability of coping with diverse geographical situations. And the team roundly considered about the original design of AEV and decided to make some changes. The intention of PDR is to document the designing process of team’s AEV, evaluate the testing methodology as well as the coding strategies the team implemented in the previous experiments, to give proposals about the improvement of AEV and experiment process.
Figure 1: Pusher Configuration
Figure 2: Puller Configuration
The most prominent design modification was the propeller configuration. The team implemented a puller configuration for the AEV, however, because the L-shape arm would get stuck with the track hanger, the team decided not to change the body structure but reverse the motors at beginning of the test to resolve this problem, therefore,the AEV runs with a pusher configuration system. However, after several performance tests, the team found the system efficiency was not as good a puller configuration. The pusher system could maintain a 18.12% efficiency while the puller configuration could only have 11.11% efficiency. In addition, because the reversing command could cause large amount of energy consumption, therefore, the team decided to change the propeller configuration.
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Preliminary Design Review(PDR)
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