[I just lost a long post due to a computer glitch, so this will have to be short.]
There is a lot going on with electric and alternative propulsion I don''t have time to research, but a few things to consider:
The amount of energy you can store by compressing gas is minimal compared to many other methods. You would need an enormous rack of tanks and an expensive compressor to charge them all at high pressure. Even then, you would have very little operating capacity.
Using an electric motor and battery bank, you would similarly have to use an extremely large and heavy set of batteries to operate for very long. Recharging the batteries would take a good while and require either shore power, or a huge array of solar panels (assuming there''s adequate sunlight), or several high-output wind generators (assuming there''s adequate wind).
There is a reason why liquid hydrocarbon fuels
are so popular; they are very efficient for storing energy. Plus, the fuel
mixture you burn in the engine is getting around 93% of its mass from the atmosphere. That''s about 15 pounds of air for every pound of fuel
that you don''t have to carry around or pay for.
I''m not saying that something better won''t come along someday, but there is still no free lunch.