The Mendeleev Tank was a proposed early tank design by Russian naval engineer Vasiliy Mendeleev, son of Russian scientist Dimitri Mendeleev, who created the modern periodic table. The vehicle was envisioned by Mendeleev during his time working at the Kronshtadt Marine Engineering School in Saint Petersburg, Russia, from 1911 to 1915. Its purported purpose was to be an ultra-heavy "landship" immune to all enemy fire and able to cross large battlefields while providing heavy artillery support to troops using a 120 mm gun. The proposed tank was one of the heaviest tanks of all time, at 173.2 tons, it would have been just a dozen tons lighter than the German Maus superheavy tank of World War II.

Controls
Button 1+roll and pitch = Gun movement
Button 2+trim = turret movement
Button 3 = Gun activation
Button 3+VTOL up = Retracts Machine gun
Button 4+VTOL up = Retracts turret
Button 5 = Engine activation

You'll know the rest

Note: don't go berserk on gun and turret activation, nasty things will happen. Anyways cheers!

Edit: Wonder why I'm gone too long? Well S* happens, depression and stuff. Now I'm well to post once again in this community, thanks for the few followers that appreciates my not so good yet full of effort creations, your downloads comments and upvotes brings a lot of happiness to this devastated heart, I'm glad to be back from this community again.