 The
MP91 still retains the MP84's side NACA cooling duct though it has increased
in size and extends much further forward. Air management at the front
end is revised with the addition of the large duct exiting at the trailing
edge of front wheel well. The duct primarily functions to pull diffuser
air from the underbody though it would appear that wheel well air is siphoned
off as well. |
 The
underside of the front diffuser is of interest. Three NACA ducts
adorn each side of the bottom with at least one providing cooling air for
the front brakes. The function of the other two is somewhat of a
mystery, though the duct furthest inboard (and probably the one next to
it as well) clearly works in conjunction with the diffuser kick. |
 Air
taken into the NACA duct blows over the top of the diffuser kick enhancing
its action. |
