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The Determination and Use of the Orbit of Cosmos 347 Rocket (1970-43B).
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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The orbit of Cosmos 347 rocket has been determined, in the form of 23 sets of orbital elements, at intervals during its 8-month life, with the aid of the orbit improvement program PROP, using about 850 observations from 47 observing stations. The values of orbital inclination obtained, which had standard deviations between 0.7 and 10 seconds of arc, were corrected by removing significant perturbations before being used to estimate the mean rotational speed of the Earths atmosphere to be equal to 1.40 plus or minus 0.05 revday, at a mean height of 240 km. This value is higher than those obtained from other satellites. Values of density scale height were obtained, over the height range 208-245 km, which agree within one sd with Jacchias model atmosphere for the appropriate exospheric temperatures.
APPROVED FOR PUBLIC RELEASE