 | United States. National Aeronautics and Space Administration - 1968 - 1030 pages
...to terminate the X-15 program no later than December 31, 1968. The three X-15 aircraft (Fig. 4-16) made a total of 199 flights, from the first flight on June 8, 1959, to the last on October 24, 1968. Of these, 154 exceeded Mach 4, 109 exceeded Mach 5, and four exceeded Mach 6.... | |
 | United States. National Aeronautics and Space Administration - 258 pages
...to terminate the X-15 program no later than December 31, 1968. The three X-15 aircraft (Fig. 4-16) made a total of 199 flights, from the first flight on June 8, 1959, to the last on October 24, 1968. Of these, 154 exceeded Mach 4, 109 exceeded Mach 5, and four exceeded Mach 6.... | |
 | United States. Congress. House. Committee on Science and Astronautics - 1971 - 1222 pages
...point whether composites would be applied to that vehicle. We need 2 or 3 years to j udge. .-,9-311 O— 71— No. 2, pt. 4 5 Mr. WELLS. Thank you. Mr....speed and altitude attained during the program were 4.520 miles per hour and 354,200 feet, respectively. A total of 700 technical reports and papers had... | |
 | United States. National Aeronautics and Space Administration - 1968 - 1712 pages
...to terminate the X-15 program no later than December 31, 1968. The three X-15 aircraft (Fig. 4-16) made a total of 199 flights, from the first flight on June 8, 1959, to the last on October 24, 1S68. Of these, 154 exceeded Mach 4, 109 exceeded Mach 5, and four exceeded Mach 6.... | |
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... however, from the fixed-sphere flow direction sensor and the fluidic temperature measurement equipment. Following a joint USAF/NASA review of the current status of the X-15 flight program, it was decided to terminate the X-15 program no later than... 