[Tolerance of +Gz acceleration by pilots with tendencies to hypotensive reactions in hot climate conditions].

During acrobatic flying the acceleration tolerance of healthy and hypotensive pilots was studied under hot climate conditions. From the professional point of view pilots were very similar. The tolerance was determined on the basis of indirect indices derived from flight accelerograms (maximum and median acceleration values, number of peaks over 4 g. time of flying). The maximum value and the number of peaks of acceleration (+Gz) over 4 g can be recommended as practically indicative of the tolerance. The observations showed an adverse effect of initial hypotension occurring in hot climate on the acceleration tolerance. As compared with the controls, the tolerance decline in 12 hypotensive pilots was I.I. g and 0.6 g of the maximum and median values, respectively.