[Characteristics of the G-loads in sports stunt flying]

Thirty well-qualified flying sportsmen, aged 22-42, who performer 210 aerobatic flights onboard a sporting airplane Yak-50, were examined, using an automatic monitoring system. The flyers were exposed to +9 Gz and -6 Gz as a maximum the duration of which was 10 s and 5 s, respectively. The onset rate varied from 0.5 to 2.5 G/s (with the mean rate 1 G/s), reaching 4.2 G/s as a maximum. On the average, the training flight lasts 25 min, 45-50% of which the pilot experiences acceleration of various values and different sign. The most common acceleration values are: +6 and +7 Gz or -4 and -5 Gz.