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THE FEASIBILITY OF THE USE OF MINIMUM TIME TRACK DATA IN AIRWAYS DESIGN
STANFORD RESEARCH INST MENLO PARK CALIF
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Five U. S. air routes San Francisco - New York, Los Angeles - Chicago, New York - Miami, Chicago - Miami, and Denver - Chicago are considered. A total of 2,000 minimum time tracks taken from five winter seasons were analyzed. From this data sample, characteristic distributions, configurations, and frequencies are delineated, using two altitude-airspeed combinations 18,000 ft - 250 knots and 30,000 ft 500 knots. Minimum time track data at 53,000 ft using an airspeed of 1750 knots are presented for the San Francisco - New York route. Results indicate that networks of fixed tracks can be derived that preserve the major benefits of minimum time track usage. The complexity of the network required varies with the length and orientation of the route. Effects of severe weather can be minimized through inclusion of sufficient route options within the derived network. Author
APPROVED FOR PUBLIC RELEASE