May 12 1964
From The Space Library
X-15 No. 3 flown by NASA pilot Jack McKay to speed of 3,000 mph (mach 4.55), the aircraft's skin reaching recorded temperatures of 800°. With sharp leading edge on top portion of vertical tail altering airflow over the tail surfaces, the X-15 was fitted with special sensors to measure effects of this altered airflow on skin friction and heat transfer rates. Also, special microphone mounted on aircraft's side measured noise level of boundary layer flowing over surfaces. (NASA X-15 Proj. Off.; FRC Release)
Soviet physicians" report on behavior of human heart in weightlessness of space said increase in gravity when space traveler re-enters earth's atmosphere and returns to earth would place heart muscle under heavy stress. Through Moscow broadcast from Tass, Drs. Roman Bayevsky and Oleg Gazenko reported cosmonauts" pulse rate slowed as did electrical conductance of the heart. The doctors believed that the "lower level of the functioning of the heart and "readjustment" of the cardiovascular system to a new level should cause a certain weakening of the heart muscle. As far as was known, not one of the Soviet cosmonauts suffered any untoward permanent effects in the state of weightlessness. However, for future prolonged flights, it is extremely important to establish the degree of "weakening" of the heart. . . ." (AP, 5/12/64)
FAA announced Panagra and Aeronaves De Mexico had each re-served two delivery positions for U.S. supersonic transport airliner, bringing total reserved positions for SST to 88 by 19 airlines. (FAA. Release 64 46)
District Judge issued temporary restraining order to halt FAA's sonic boom flight-tests over Oklahoma City. The order was issued in suit filed by Attorney George Miskovsky alleging that sonic boom shock waves were "destroying, damaging and weakening the structures of private homes and business properties." Hearing was set for May 19, after which the District Judge refused to halt the sonic boom tests (see May 21). Sonic booms were said to have cracked 147 windows in downtown office buildings. (Miles, Wash. Post, 5/12/64; AP, Wash. Post, 5/13/64)
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