I've recently become interested in r/c modeling. I'm trying to build an airship from scratch and need to find out how to caculate the size of ship needed to lift the weight of itself. Obviously I'm not an engineer but I enjoy building things just to see if I can make them work. Help from anyone who can and don't mind helping would be greatly appreciated. I'm also interested in suggestions as to the use of different gases which may be available besides helium. Thanks alot for any help given.
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