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Launch report: Clear FTCs 1 and 2 as BackglidersHere you find the construction of the CFTC2 rocket.
Comparison: plain bottle cap vs. selfmade
ogive nose cone
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HSEAM |
H rel |
tapogee |
tdown |
plain bottle cap as nosecone |
84 m |
100 % |
3.7 s |
15.1 s |
styrodur nose cone on cap |
90 m |
107 % |
3.85 s |
17 s |
The result is not very safe: these values are averages from the 2 closest values in each group - one outlier per group was left out, because of the somewhat high variations. Eventually I redo these measurements with higher pressures and more samples.
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