Career
He proposed new compositions of rocket fuel, a number of new designs of rockets - multi-stage, compound, with a tail of various designs, etc. Invented a stabilizer such as "delta".
In 1645 he went to the Netherlands and in the same year took part in the siege of different cities by the troops of Frederick Henry of Oranski. In 1648 he took part in the war with the Cossacks.
Soon after the book was published he died. The causes of death are unknown.