Blog #4 Spring 23

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In terms of completing the proposed project work, Team 7 has completed manufacturing and assembly of the CCS design. Team 7 has also completed thermal oven validation testing. Six tests were conducted in total, with two tests each at 100°F, 110°F, and 120°F. These tests were run for 60 minutes in total, with effectiveness measured at both the 40 and 60 minute marks. The goal of the project is to keep the internal CCS temperature between 32-77°F for a period of 40 minutes at an external temperature of 110°F. The graphed results of temperature data recorded for the second run of thermal oven tests conducted at 110°F and 120°F can be found in Figures 1-2.

Figure 1: Thermal Oven Test at 110F (Run 2)


Figure 2: Thermal Oven Test at 120F (Run 2)

Team 7 has yet to complete shake table (vibrations) testing. The team has begun analysis of flight data gathered from SCR’s most recent competition rocket, Zenith. Team 7 will provide Iron Ring Technologies with a Frequency vs ASD (acceleration spectral density) graph in order to perform a random vibration analysis. The data provided will account for a FOS of 2, proving that the CCS will be able to withstand double the acceleration present throughout flight. Additionally, following the completion of testing, the CCS will be visually inspected for any deformation or signs that the device cannot reasonably be re-used.

In order to constrain the CCS to the shake table during testing, an adapter plate was designed (Figure 3) and is currently in the process of being machined. Once manufacturing is complete within the next week, Team 7 is set to meet with a vibrations table technologist at Iron Ring Technologies to carry out testing. The team is confident that shake table validation testing will be complete in time for inclusion of an analysis of the results on the final technical report.

Figure 3: CAD of Shake Table Adapter Plate


Team 7 learned that the CCS design is capable of meeting the team's thermal goals. The project execution was carried out effectively, as the current validation results provide evidence that the device can maintain temperatures lower than the set target, for a longer amount of time than necessary. 


As shown in the thermal oven tests, the CCS maintained temperatures <=77°F when tested at 100°F and 110°F after 60 minutes. This performance well surpassed the team’s initial goal of maintaining a temperature <77°F after 40 minutes. At 120°F, the CCS was able to maintain 92.2% effectiveness after 40 minutes which is still close to the goal at a higher temperature than anticipated in a real world scenario. Team 7 is still in the process of doing validation for structural integrity with the shake table. The key takeaway about the team’s solution is that it can withstand higher temperatures than required, and keep the GoPro recording for a much longer duration than when recording at competition.



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