Oleksandr Dmytrovych or Alexander Dmitrievich Zasyadko (1779 — ), was a Russian-Ukrainian gunner and specialist in rocketry

Rocket

A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction...

, Lieutenant General

Lieutenant General

Lieutenant General is a military rank used in many countries. The rank traces its origins to the Middle Ages where the title of Lieutenant General was held by the second in command on the battlefield, who was normally subordinate to a Captain General....

 (1829).

In 1797, Zasyadko graduated from the Artillery

Artillery

Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

 and Engineering

Engineering

Engineering is the discipline, art, skill and profession of acquiring and applying scientific, mathematical, economic, social, and practical knowledge, in order to design and build structures, machines, devices, systems, materials and processes that safely realize improvements to the lives of...

 School in Saint Petersburg

Saint Petersburg

Saint Petersburg is a city and a federal subject of Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea...

 (currently Mozhaysky Military Engineering-Space University). In 1799, he participated in the Italian campaign of the Russian army under the command of Aleksandr Suvorov, Russo-Turkish War

Russo-Turkish War, 1806-1812

The Russo-Turkish War was one of many wars fought between Imperial Russia and the Ottoman Empire.- Background :The war broke out in 1805–1806 against the background of the Napoleonic Wars...

 of 1806-1812 and Patriotic War of 1812.

In 1815, Zasyadko began his work on creating military

Military

A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...

 gunpowder

Gunpowder

Gunpowder, also known since in the late 19th century as black powder, was the first chemical explosive and the only one known until the mid 1800s. It is a mixture of sulfur, charcoal, and potassium nitrate - with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer...

 rocket

Rocket

A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction...

s. He constructed rocket-launching platforms

Multiple rocket launcher

A multiple rocket launcher is a type of unguided rocket artillery system. Like other rocket artillery, multiple rocket launchers are less accurate and have a much lower rate of fire than batteries of traditional artillery guns...

, which allowed to fire in salvos (6 rockets at a time), and gun-laying

Gun laying

Gun laying is the process of aiming an artillery piece, such as a gun, howitzer or mortar on land or at sea against surface or air targets. It may be laying for direct fire, where the gun is aimed similarly to a rifle, or indirect fire, where firing data is calculated and applied to the sights...

 devices. Zasyadko elaborated a tactics

Military tactics

Military tactics, the science and art of organizing an army or an air force, are the techniques for using weapons or military units in combination for engaging and defeating an enemy in battle. Changes in philosophy and technology over time have been reflected in changes to military tactics. In...

 for military use of rocket weaponry. In 1820, Zasyadko was appointed head of the Petersburg Armory

Armory (military)

An armory or armoury is a place where arms and ammunition are made, maintained and repaired, stored, issued to authorized users, or any combination of those...

, Okhtensky Powder Factory, pyrotechnic laboratory

Laboratory

A laboratory is a facility that provides controlled conditions in which scientific research, experiments, and measurement may be performed. The title of laboratory is also used for certain other facilities where the processes or equipment used are similar to those in scientific laboratories...

 and the first Higher Artillery School in Russia. In 1827, Zasyadko was in charge of Artillery Headquarters

Headquarters

Headquarters denotes the location where most, if not all, of the important functions of an organization are coordinated. In the United States, the corporate headquarters represents the entity at the center or the top of a corporation taking full responsibility managing all business activities...

 of the Russian army and took part in the Russo-Turkish War

Russo-Turkish War, 1828-1829

The Russo–Turkish War of 1828–1829 was sparked by the Greek War of Independence. The war broke out after the Sultan, incensed by the Russian participation in the Battle of Navarino, closed the Dardanelles for Russian ships and revoked the Akkerman Convention....

 of 1828-1829. He organized rocket production in a special rocket workshop and created the first rocket sub-unit in the Russian army.

In 1834, Zasyadko retired due to his illness. The crater Zasyadko

Zasyadko (crater)

Zasyadko is a small lunar crater located to the northeast of Mare Smythii. It lies beyond the eastern lunar limb in an area that is only visible during favorable librations. It is located entirely within the crater Babcock. To the southwest is McAdie. Zasyadko is a bowl-shaped formation with a...

 on the far side of the Moon is named after him.