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Motor calculator: https://www.ecalc.ch/xcoptercalc.php
Number of rotors - http://www.dronefromchina.com/new/how-to-choose-the-UAV-from-4-rotor-6-rotor-8-rotor.html
4 rotors:
Cheapest/lightest
Can be smaller - min size around 362mm/14.25” frame size if using 10” props
If one rotor breaks then you will most likely crash
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Can carry more weight
Larger - min size around 525mm/20.5” frame size if using 10” props
More redundant so should survive if 1 rotor breaks
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break
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What other teams have done:
Toronto's Drone (https://www.dronefromchina.com/new/how-to-choose-the-UAV-from-4-rotor-6-rotor-8-rotor.htmlutat.ca/uas ):
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UBC (https://www.ubco-aerospace.ca/ ):
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