"the vehicle can travel at a speed of 9 Mach [9 times the sound speed: approx. 10,000 km / h], both vertically and horizontally.
Sources say that performance is limited only by the biological limitations of pilots – which are many, given that the gravitational force is reduced by 89%. The propulsion of the TR-3B is provided by three multimodal propellers mounted in each corner at the bottom of the triangular platform (see Fig. …). TR-3B moves at a speed of up to 9 Mach (Mach is a unit of measurement used in aerodynamics to express the speed of a body moving in a fluid: projectile, aeroplane, rocket, etc. The Mach 1 speed is equal to the sound velocity in that fluid; Under standard conditions, Mach 1 is equal to 1224 km / h (or 340 m / s) until it rises to 120,000 meters (120 Km), then God knows how fast it can move"
https://matrixdisclosure.com/tr-3b-black-triangle/
"It is funded and operationally tasked by the National Reconnaissance Office, the NSA, and the CIA. The TR-3B flying triangle is not fiction and was built with technology available in the mid-80s. Not every UFO spotted is one of theirs."
https://theeventchronicle.com/secret-plane-tr-3b-patent/
"According to testimonies offered by military pilots involved in the project, “these spacecraft can incredibly reach lunar orbit in less than an hour.”"
https://news156media.com/archives/32353