Rotary engine

ROTARY engine also known as gnome engine, is a multi cylinder rotary internal combustion engine. It is also known as V-type engine
THIS type of rotary engine was used in the past as an Aero engine, but now it has been replaced by turbines...
IN a rotary, as image the silder is replaced by a piston and link 1by a cylinder pivoted at o. Moreover, instead of one cylinder, odd number of cylinder eg: five or seven cylinder.....