TR-3B Astra · UFOCosmos

Alleged nuclear-powered triangular surveillance aircraft developed under a Special Access Program. Claimed by multiple military and civilian witnesses to have been observed at low altitudes since the early 1990s. The vehicle is described as 200 feet across, using a plasma-filled accelerator ring to reduce mass and resist gravitational forces.

The TR-3B is described by claimed insiders as a platform developed using reverse-engineered technology and conventional US aerospace engineering. The craft is alleged to generate a rotating magnetic field that reduces the vehicle's mass by 89%, dramatically reducing the fuel required for conventional propulsion. Witness accounts of large triangular aircraft have accumulated since the 1980s. The Belgium wave of 1989-1990 produced thousands of reports of low-flying triangular craft, including radar confirmation and photographs taken by police officers. The Belgian Air Force scrambled F-16s to intercept the objects, which were tracked at speeds and acceleration rates exceeding conventional aircraft. Whether the observed triangular craft represent a classified US program, a foreign program, or genuine UAP remains unresolved. Investigative journalist Edgar Fouche claimed in 1998 to have worked on the TR-3B program at Groom Lake. His claims have not been independently verified but remain consistent with multiple other witness accounts.