>>>Promo pic for McLaren P1 (see attached)
>>>
>>>The aircraft in the background has at least 4 turbofan engines, in twin-pod configuration. That configuration is not commonly used. There are some examples such as B-36 and B-47 but those use twin turbojet, not turbofan, engines.
>>>
>>>I'm 99% sure it's not a B-52H, you can Google images for those engines, the inlet looks significantly different.
>>>
>>>It's defeated my Google-fu so far ...
>>
>>I don't see why you think its not a B52. Maybe the photoshopped it a bit to bring the fans forward.
>
>There's another McLaren image taken from a slightly different angle. They might both be Photoshop jobs, but why bother if you can just use an actual aircraft of some kind?
>
>Also a B-52H T33 engine dual pylon looks significantly different, and the nacelles as well (look at the joint between them). Images attached.
>
>Walter: the B-52 TF33 engines have 28 visible blades in the turbines, the engines in the McLaren pics have 32 blades.

I'm not an expert, but are you sure they have 28 blades? I ask that because in the pictures, you are not directly looking at the blades, but rather at some kind of roster placed directly in front of the blades. See http://upload.wikimedia.org/wikipedia/commons/5/56/Pratt_%26_Whitney_J58_Turbojet.jpg

You can see more clearly from http://www.enginehistory.org/G&jJBrossett/English%20Field/P&w%20tf33.jpg, which has 34 blades.

That roster seems to be missing from the mclaren picture, perhaps from an estetic motivation.

Still I think the aircraft is a B52. How many aircrafts are out there with twin pair engines with a fuel tank at the end of the wing?

Walter,