What fuel was used in the first liquid propelled rocket flown by Goddard?

The first liquid propelled rocket flown by Robert H. Goddard utilized a mixture of liquid oxygen and gasoline as its propellants. This selection was critical for early rocket propulsion because liquid oxygen acted as the oxidizer, while gasoline served as the fuel. The combination of these propellants allowed for greater efficiency and power than solid fuels of the time.

Goddard's successful experiments with this mix paved the way for future developments in rocketry, demonstrating fundamental principles of propulsion that are still relevant today. His pioneering work using this specific fuel combination highlighted the importance of finding suitable propellant mixtures to achieve significant altitude and velocity gains necessary for space exploration. Other choices, while important in different contexts, either were not used by Goddard in this historic launch or represent advancements that came later in the field of rocketry.