sentences:  Since their formation in 1934, they had also performed experiments involving model, black powder motor-propelled multistage rockets.In a research paper submitted to the American Institute of Aeronautics and Astronautics (AIAA), Parsons reported these rockets reaching velocities of 4,875 miles per hour, thereby demonstrating the potential of solid fuels to be more effective than the liquid types primarily preferred by researchers such as Goddard.In light of this progress, Caltech and the GALCIT Group received an additional $10,000 rocketry research grant from the AIAA.