Firstly, there are so many variables in the first case that it doesn't help much more to have various parameters that are editable because it is never going to be accurate. I am going to use the chart I posted previously as a guide to aim for:
I've decided that my best option is to ensure that Lifeline is operable within a couple of minutes and that it's ergonomics and geometry are well suited to the conditions and the physiological effects they cause.
The other model, of Lifeline's electrical power requirements has also died a death. I have calculated the power requirements for a certain speed, but I do not know enough about prop geometry (I also haven't been unable to find clear information online) to be able to then translate this into a motor speed and hence current drawn which would allow me to spec a battery.
I've sunk a fair bit of time into it so I'm going to call it quits there and spec the motor and battery by comparing with RC models that deal with comparable loads.
A more successful foray into excel allowed me to calculate the space required for a set amount of line. It turns out spirals take a huge length to create relatively small diameters. I used an online tool (http://deepfriedneon.com/tesla_f_calcspiral.html) to calculate the length of line for a given diameter and then used excel to calculate what volume I would need to fit this in.
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