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** Description:** The article considers the method of calculating weights of individual sources errors from meteorological factors which affect to the accuracy when it is firing feathered jet-propelled projectiles. The definition of different factors weights based on the result of calculation middle errors of complete preparation for range and direction. The recommendations for accounting to main of disturbing factors and the use of instrumentation for averaging was based on the developed method.

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Keywords:
** preparation errors, the coefficient of correlation, probability, mathematical expectation, active part of the trajectory, the passive part of the trajectory, weights of errors

Zhytnyk, V.Ye., Petrenko, V.M., Trofymenko, P.Ye. and Hridin, V.I. (2012), “Metodyka rozrakhunku «vahy» okremykh dzherel pomylok pid chas strilby reaktyvnymy snariadamy”,