its also not a fighter. at all.
this submission/summary is horrible.
this plane was a RACER. not a fighter. it would make a VERY BAD fighter, and be meaningless at the battle of britian.
also wasnt Bugatti a French company??
Even as a racer this plane is fairly poorly designed, even if it is pretty cool looking. and as a fighter? uh uh. no way. even if it flew (which it never did!), pilots and mechanics alike would hate this thing. maintenance nightmare.
-too small, no reasonable armament payload or range, or both.
-midplaced engines are notorious for overheating. the space is also extremely constrained, and it's very difficult to upgrade later on: they couldnt add super charging to the P39, limiting it to low altitudes. and to keep it cool they had to add enormous air scoops, which is rather counterproductive for a streamlined design, and offsets the aerodynamic gains from mid mounting.
-this thing has at least 3 and probably 4 gearboxes between the engines and the props. both engines are at an angle. the rear engine output has to be turned twice before its inline with the prop. and both outputs but we combined for the contrarotating props, even if its just two shafts, one inside the other.
-all this complexity is rather wasted effort if it's simply so it can drive contrarotating props with 2 blades. too much compelxity for too little gain. better to have a single powerful engine, and either drive a single large prop, or have it drive a gear box that then drives contrarotating props...and one that gets a better bite of air that this tiny things blades. using two engines to drive cotnrarotationg props has been done before, and the results were nearly always subpar. overheating and fires, complexity, underpowered, excessively heavy. if they must have two engines, go for a push pull design, ala the DO335 and a few others. it's quite effective, and much less mechanically complex (and lighter and more reliable).
it's easy to claim 500mph and "turn the tide of battle" for a plane the never flew. overall, this is interesting, but way overhyped.