This is the standard design of Dr. Goddard's A-series rockets. This series consisted of 14 tests between January 15, 1935 and October 29, 1935. The A-series rockets were about 15 feet in length. It was the A-4 which took off March 8, 1935 that was the first rocket to travel at the speed of sound.

This is a diagram of the L-13, one of the L-series rockets that Dr. Goddard designed. The L-13 reached an altitude of 9000 feet which was the highest any of Dr. Goddard's rockets reached. As seen in the diagram the L-13 used stabilizing vanes which Dr. Goddard invented for use with keeping his rocket flying straight and was granted the patents for. The L-series rockets were launched between 1936 and 1938 and consisted of 30 tests. These rockets were about 18 feet long.

Aside form the A and L-series rockets, Dr. Goddard designed and created the P-series rockets. The 36 tests for this series of rockets were conducted between 1938 and 1941. These were some of Dr. Goddard's longest rockets measuring in at about 22 feet long. The P-series rockets were the last of his flight rockets.