X-15 number 3 pulls away from its B-52 launch aircraft during one of its 65 flights during the program, attaining a top speed of Mach 5.65 and a maximum altitude of 354,200 feet. (NASA)
NASA
X-15 number 3 pulls away from its B-52 launch aircraft during one of its 65 flights during the program, attaining a top speed of Mach 5.65 and a maximum altitude of 354,200 feet. (NASA)
NASA