The real v-22 uses helicoter swash plate with cyclic controls to hover and then locks them out somewhere between heli and airplane mode.

It actually does use LARGE airplane props. They are as long and wide as a heli blade ,BUT are twisted (47 degs) and tappered just like an airplane blade so as to deal with the forward flight drag that philly mentioned .

I have tried twin vectored ( differential tilting ) engines on the wing of a light airplane and can tell any one that wants to try ,that it will not hover in ground effect good enough to take off and land like a true VTOL.Balance is a big problem on it between hover and forward flight .Now if you just want to jump into the air and thump back down into a landing then you have a cheap VTOL.

I don't consider it a vertical take off and landing aircraft unless it can hover in ground effect for several minutes with out touching the ground and then be able to convert to airplane flight and back to a serveral min. hover and then land gently.

I think that a true VTOl is what Noah is trying to build not just a funfly twin engine plane.