The TR-3B Black Manta is linked to decades of black triangle sightings and claims of an advanced propulsion system using pressurized mercury, nuclear energy, and plasma to reduce mass and signature.

The TR-3B Black Manta is framed as a black triangle aircraft surrounded by sightings, denials, and speculation similar to other alleged US black projects. The claimed propulsion relies on pressurized ...

The Bird of Prey was actively flying while plane spotters and UFO junkies were collecting reports of other alleged secret aircraft like the TR-3B and the hypersonic reconnaissance platform many called ...