The Mig-23PD "Faithless

Called "23-01" but also known as the MiG-23PD, was a tailed delta similar to the MiG-21 but with two lift jets in the fuselage. It was created as response to VVS demands for a new aircraft to replace the MiG-21. However, it became apparent very early that this configuration was unsatisfactory, as the lift jets became useless dead weight once airborne. The second prototype, known as "23-11", featured variable-geometry wings which was proved to be much more promising and went on the become the well known Mig-23 "Flogger"

Despite not entering production, the Mig-23PD was nevertheless designated "Faithless" by NATO. Because like its "Faceplate" predecessor, NATO incorrectly assumed that this is the plane that will enter production.

Credit : war machines