Boeing XB-47D experimental bomber - photo

[Altair]

The Boeing XB-47D was an experimental bomber powered by turboprop and turbojet engines. Boeing hoped that this configuration would increase the unrefueled range of the aircraft at high cruise speeds.




Previously:

McDonnell XF-88B Voodoo - photos
Republic XF-91 Thunderceptor - photo
Boeing YC-14 - photos and video

[Toolmaker51]

How do engineers "hope" when it comes to calculating range? Aspiring pilots want to know!
Engine (y) consumes (gph) amount of fuel in (t) period of time X amount of engines. Factor that into drag calculations for the airframe and load capacity.

Assuredly Marv knows, and will correct those algebraic terms...