Early in the LHX program (gave birth to the late lamented RAH-66 Comanche) the Army’s requirements were sufficiently aggressive and vague that Bell Aerospace held out hope that a tiltrotor might be chosen. So Bell designed a few single-seat “scout” tiltrotors under the BAT (Bell Advanced Tiltrotor) moniker. Most were more or less similar in configuration to the Bell XV-15, but one design – which I know solely from this one piece of art, published in 1983 – went a little further. The fuselage and tail surfaces were shaped to reduce the radar cross section, making the vehicle hopefully somewhat stealthier. Sadly, no diagrams or technical information for this configuration. If someone knows more, or has a better version of this artwork, by all mean let me know.
