First Soviet liquid-propellant rocket successfully fired. References: 17 .

A grant from the Daniel and Florence Guggenheim Foundation allows Goddard to conduct a more extended laboratory program of rocket engine tests through 1934. Studies were made in these two years of insulators, welding methods for light metals, gyroscopic balancers, reciprocating and centrifugal pumps, jet pumps, and rocket chambers utilising atmospheric air, similar to the later V-l 'buzz bomb'. References: 482 .