The Mikoyan-Gurevich MiG-105 part of a programme known as the Spiral (aerospace system), was a manned test vehicle to explore low-speed handling and landing. It was a visible result of a Soviet project to create an orbital spaceplane. This was originally conceived in response to the American Boeing X-20 Dyna-Soar military space project and may have been influenced by contemporary manned lifting body research being conducted by NASA's Flight Research Center in California, USA. The MiG 105 was nicknamed Lapot Russian: лапоть, or bast shoe (the word is also used as a slang for shoe), for the shape of its nose.