a Russian artillery officer and scientist in the fields of artillery, rocketry and instrument making. He completed his military career at the rank of Lieutenant General. Konstantinov is known to have created structurally perfect missiles (for the 19th century) with a range of 4 to 5 km, launch pads, and rocket-making machines. He authored a number of works on rocket science, artillery, firearms, pyrotechnics, and aeronautics. A crater on the far side of the Moon is named after him.
