lake khasan and the khalkhin gol river in the soviet-finnish and great patriotic war until 1942, moren 10,000 units were built. aviation there are about 120 such steel hearts in the museum's collection without an engine. this hall houses some of the very first experimental aircraft engines. ufimtsev and nesterov caleb and kastovich foreign engines that were installed on russian aircraft, followed by antoinette and watermelon kljazhe nyuport and ryan one of the unique exhibits of the forman 4 hall before the first world war. he was one of the most popular airplanes in 1907. a well-known french cyclist and racecar driver, a nascent aviation enthusiast had several aircraft, which in fact turned out to be a new aircraft. soon, together with his brother henri forman , he founded his own aircraft in russia. forman 4 appeared in 1910 and was actively used as a flying desk, becoming one of the most massive aircraft in our country , over 1500 copies were built at domestic factories. it is interesting that this exhibit is a full-size flight copy machine made by order of the film studio helen fi