Fatigue, defects, wear and tear , and skipping required maintenance, would be my guesses. Not sure anything will completely mitigate, but use of...
A 35 + year old Troll Motor may not have much life left if it has been used pretty often. So you might take it to a repair man for evaluation...
If it gets to be too complex to calculate reliably, perhaps find out what the smallest scalable size is, build it, and use a water testing tank to...
This: Yes, that's the way I approach it also! Some other factors, some of which can make a significant negative implication in efficiency some...
There's helium balloons and surface balloons that can be used, or a combination of both, at least in theory.. If someone is surface balloon...
Fisherman have been doing something like that with kites and balloons for many years. I think they even sell kits, which might be considerably...
If the maximum rating of your gen set is 8 kilowatt hours, and the application is always drawing that 8 KW hours, sounds pretty impressive...
Pure Lithium metal is so reactive that essentially doesn't exist in the Earth's crust, so that's 0%, it is ranked number 32 out of 78 most common...
Electric motor power driven platforms are being developed based on little or no Rare Minerals and can adjust to a large variety of energy inputs....
Dopamine depletion? Give-up-itis: when people just give up and die https://www.yahoo.com/news/itis-people-just-die-091023463.html
The water doesn't have to be that cold, for those that are unaccustomed to cold water, Know Lake Tahoe before you jump in: The facts of Cold...
Would that ring help much if somebody is already wearing a PFD, and hypothermia is a big consideration? Maybe the Drone could drop a fast tiny...
If you are just beginning, the first thing you need is experience! Maybe spend a few months or whenever time you can working on a fishing boat,...
Yes, where solar Electric vehicles are concerned, most of the time specifications are listed under absolutely perfect conditions, and the reality...
Thanks for your patience and link, your previous statement makes complete sense to me now!