Word: shippings
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
Earth-Angled. In inertial navigation, every motion of a ship in any direction is accounted for and automatically computed to give precise distance traveled. The key instrument is an accelerometer -a container holding a weight that can move, against springs, toward one end or the other. The weight acts like a man's head that is jerked back because a cab driver starts suddenly. The weight thus measures a vehicle's thrust (acceleration), and from this information, an electronic computer can determine the vehicle's velocity. Inertial navigation uses two accelerometers, one to measure all north-south...
...Arctic's 24-hour-a-day sunlight, like a translucent cloud racing by. In his cabin, a slim U.S. Navy commander wrote out in longhand a couple of messages-one addressed to President Dwight D. Eisenhower, the White House, Washington, the other to his crew. His ship, he wrote in the crew's message, was about to achieve "goals long sought by those who sail the seas...
...beneath the peaceful, sunlit icecap, the 116 U.S. Navymen were making more pages for the history books than anybody else. They were setting a new sea tradition for their countrymen, to rate alongside Jones, Farragut, Peary, Byrd. The submarine was blunt-bowed Nautilus, world's first nuclear-powered ship. Nautilus' position: under the ice at the North Pole...
...Americans knew Nautilus' secret mission-an 8,146-mile voyage from Pearl Harbor to Portland, England, via the North Pole. Last August and September Nautilus had probed under the ice pack in a little-noticed voyage, got within 180 miles of the Pole and closer than any ship had gone before. Last December Nautilus' developer, Rear Admiral Hyman Rickover, predicted that Nautilus would go to the Pole "in the not too distant future," added, "I venture to say that it will go down as one of history's greatest feats of exploration...
Nautilus now headed directly toward the North Pole, the place that had drawn Nansen, Amundsen, Wilkins, Peary, now flown over by scheduled airlines but never yet reached by ship. Its speed was rapid, probably in excess of 20 knots. Its depth was below 400 ft. Its reactor was functioning perfectly. Its ship's inertial navigational system-an amazing complex of gyroscopes, accelerometers, depth finders, integrators, trackers, etc. (TIME, April 29, 1957) taken over in a rare salvage from the Air Force's defunct Navaho missile program-kept Nautilus on course and on depth, gave its captain instant readings...