Abstract: Estimates of the root mean square change in density at 1, 7, 12, 18, and 25 km are presented for lags of one through 24 hours. The lag variability at all of the heights considered increased with an increase in time. The ...

Abstract: Temperature measurements within 200 mi of the airport, and for altitudes up to 60,000 ft, will be necessary for calculating the fuel requirements of supersonic transports. In order to determine an adequate time and space ...