Of course it won't fly! For your question about putting the helli inside a vacuum glass container: The electrical energy will turn into kinetic (rotor) and this by friction (only mechanical friction between the static and spinning components, since there is no air to cause some friction) will turn into thermal energy that will contact to the rest of the helli's body and then to the glass container (although glass is not the best thermal conductor). Don't forget that thermal energy can also be transfered by radiation.