In this section, we will go through all of the steps we found necessary in our quadcopter design. Be aware that quadcopter design can be a cyclic process. That is, a change in any parameter 1 could necessitate a response in parameter 2 which drives parameter 3 and so on ulitmately changing parameter 1. A simple example: You want to double your flight time. You double your battery capacity. This increases your weight by 15%. This requires a new calculation for flight time and a battery that actually has more than double the capacity.
Don't worry though. We will do our best to help it all make sense. So get your thinking cap on but don't sweat it. It's not rocket science after all, just aeroscience!