The Sukhoi T-4, also known as "Aircraft 100", "Project 100", or "Sotka" is a Soviet high-speed reconnaissance, anti-ship and strategic bomber aircraft that did not proceed beyond the prototype stage.
The Mikoyan-Gurevich MiG-105, part of the Spiral program, was a crewed test vehicle to explore low-speed handling and landing. It was a visible result of a Soviet project to create an orbital spacepla
MiG 105-11 test vehicle at the Central Air Force Museum.