March 1953
From The Space Library
Research on 1-million-pound thrust plus engine begun at Rocketdyne, the feasibility of which was established in March 1955.
Boeing delivered last propeller-driven bomber, a RB-50H,, to the USAF. More than 4,250 B-29 and B-50 Superforts were dellvered to the AF in the last decade ; more than 17,000 four-engined Boeing bombers since the first B-17 in 1935.
Lt. Col. John P. Stapp traveled at 421 mph on 3,500-feet track in rocket-powered sled.
