Hey, I am not sure if this is the right place to ask but I was wondering if anybody could help me. Basically I have picked a 'solar powered helicopter' (real helicopter, not a toy one) to do a project about at school. I know this is probably impossible but I have to research about it and how I would design it. Some of the things I need to know are: How much power does a helicopter need to take it off the ground? and could this power be made from solar panels? What is the lightest material to make a helicoper from? Any ideas and suggestions about a helicopter that runs on solar power would be brilliant, even if it is not possible all the technical information I can get would be great. Thanks Very Much. Edit: Or any other way to make a more 'eco-friendly' helicopter?