Word: cahn
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...LEGEND OF ROBIN HOOD (NBC, 7:30-9 p.m.). Sherwood Forest comes to life again as Robin Hood (David Watson) and his band (Noel Harrison, Walter Slezak, Bruce Yarnell) make merrie to the music of Sammy Cahn and James Van Heusen. Cast includes Roddy McDowall, Steve Forrest, Victor Buono, and Douglas Fairbanks Jr., singing and swashbuckling through 12th century England...
...supersonic transports may have a happier choice. On the basis of preliminary experiments, two scientists at California's Northrop Corp. believe that the sonic boom may not after all be a necessary evil. Last week, at a meeting of the American Institute of Aeronautics and Astronautics, Aerodynamicists Maurice Cahn and Gustav Andrew suggested that an electric field projected in front of a supersonic plane might eliminate the boom, and lessen drag as well...
...exerts a pressure disturbance that travels forward at the speed of sound, parting the air ahead so that it will flow relatively smoothly around the plane. Supersonic planes produce the same kind of pressure wave but actually outrace it, causing the air molecules to pile up. This effect, says Cahn, "produces a shock wave like cars slamming into each other on the freeway." To eliminate or reduce the booms caused by these shock waves, the Northrop scientists decided, SSTs would have to be provided with an artificial forward-moving "pressure wave" that they could not outrace...
Visual Dividend. Aerodynamicist Cahn admits that he does not have the answer to one objection raised to his paper at the A.I.A.A. meeting: the creation of a sufficiently strong electrical field might require too much power to be economical. But he points out that there would be less drag or air friction on a charged SST, reducing the power necessary to fly it at a given speed and altitude. He suggests that only further tests with larger models and wind tunnels-now being considered by Northrop, Boeing and NASA-can determine if the system is practical...
Electrically charged SSTs would actually provide a visual dividend. Ionization of the air in front of the planes would produce a corona discharge that would be seen as a bright blue glow in the dark. "When supersonic traffic gets heavy," says Cahn, "this could provide observers on the ground with a spectacular view at night...