Ary Sternfeld and cosmonautics

The Paper gives a brief review of the creative legacy of the Soviet scientist A. A. Sternfeld (1905–1980) who is one of the Cosmonautics' pioneers. A contribution of A. A. Sternfeld to the theoretical Cosmonautics is analyzed. The Sternfeld studies in optimal space flights of spacecraft (S/C) are shown. There are considered the connections of Sternfeld's results with the modern theory of space maneuvers and with some modern space projects. The Paper is prepared according to the proposal of the Polytechnic Museum in Moscow to the 100th anniversary of the Sternfeld birthday.