Main problem here is that it is a floating device. As soon as it unloads 4 tons of cargo it gets pushed up with 4 tons force upwards. And you'd better do not release helium to compensate that - it is quite expensive.
Without solving that problem airships are mostly for travel...
Main problem here is that it is a floating device. As soon as it unloads 4 tons of cargo it gets pushed up with 4 tons force upwards. And you'd better do not release helium to compensate that - it is quite expensive.
Without solving that problem airships are mostly for travel...