The rule of automatic stop of design of values of the controlled parameter is examined at prognostication of the technical state of elements of side equipment of aerotechics during its exploitation on the technical state with control of parameters. A rule is utillized by a twostage approach at planning of experiment. On the first stage utillizing inequality of Chebyshev the estimation of sample size is carried out during the leadthrough of the trial driving away. On the second stage Val'dovskiy is utillized going near determination minimum of necessary volume of the designed realization.
prognostication of the technical state, design of realization, sample size, planning of experiment