Word: nitrogenating
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...engineers termed the idea of using TRIP-processed materials to prevent metal fatigue "pure speculation" at this point, it is not beyond the realm of possibility. Other conceivable uses of TRIP steel: storage tanks to withstand the super-coolness (as much as -450° F.) of liquid helium, hydrogen, nitrogen and oxygen; chemical-processing equipment; roller and ball bearings. TRIP, in the estimate of its discoverers, is capable of being produced commercially at prices competitive with other high-strength steels. It may some day be used in the manufacture of deep-diving descendants of such undersea vessels as the bathyscaphe...
...have a point. Turbines are notoriously affected by weather. On a hot day, a turbine engine may op erate at only 80% of its normal ef- ficiency. In cool weather, on the other hand, it may be 120% efficient, be cause cool air is richer in oxygen and nitrogen. And the temperature at Indy was an unseasonable...
...secret is liquid air-a mixture of oxygen and nitrogen supercooled to - 318°F. It is pumped into vacuum-insulated Dewar tanks, sophisticated thermos bottles that protect the icy liquid from the warmth of the surrounding water and at the same time keep the diver's back and shoulders from freezing. From the tanks, the liquid air is piped through warming coils that heat it until it expands into breathable gas. Only hazard: since liquid air allows the diver to stay under far longer, he must surface slowly, in stages, to avoid the bends...
Demonstrating its versatility in last week's test, the SV-5D fired nitrogen jets in response to commands radioed from the ground, changing its attitude as it soared through space over the Pacific. Then, as it followed its trajectory back into the atmosphere, the craft moved its control flaps, turned, and detoured 500 miles before returning to its original course and splashing down in the ocean near Kwajalein Island. Though the SV-5D sank, and was lost when heavy seas ripped away its flotation gear, its otherwise successful flight brought closer the day when man can first steer...
...employed a two-gas system from the beginning of their manned-space program. It has proved awkward in at least one of their space missions. Before Cosmonaut Aleksei Leonov could leave Voskhod II for his space walk, he had to breathe pure oxygen (to rid his body of dissolved nitrogen and avoid the possibility of bends). He then entered an air lock, sealed his suit, gradually lowered its pressure to about 3 lbs. per sq. in. (so that it would be less inflated and more flexible) and only then was able to open the outer hatch and step into space...