Approach of HP and PHP maneuver training on human centrifuge

Objective To investigate the effects of HP and PHP maneuver training on human centrifuge for the purpose of establishing a scientific training approach on centrifuge. Methods According to the maneuverability of high performance fighter aircrafts,a 3-day centrifuge training program was constituted.The highest training G level was 6.0,7.0,9.0 G respectively for 3 training days.On the 1st day,preprogrammed acceleration profiles were adopted.After relaxed G tolerance test,pilots who wore anti-G suit or compensatory suit underwent HP maneuver training.On the 2nd and 3rd day,trainings of HP breathing were carried out during 3.0 G exposures.The close-loop controlled trainings were conducted during 5.0,7.0,8.0 and 9.0 G runs where pilots were performing HP and PHP maneuver.Fifty-five pilots went through the centrifuge trainings.Changes of +Gz tolerance,HR,breathing rate (BR),and muscular force of legs (Flegs) during the training were observed and analyzed. Results Fifty-two of the 55 pilots (94.55％) completed the training of 8.0 G for 10 s with the elevated G tolerance ranging from 2.0 G to 3.0 G.Flegs and HR raised significantly with the increment of G level (F =111.95-1253.21,P＜ 0.01).BR was controlled between 20-26 times/min.The trainees reported that the close-loop controlled training was more comfortable and preferred than passive controlled training. Conclusions The HP and PHP maneuver training approach on centrifuge could enhance pilots anti-G capability greatly,and thus the aerial combat performance of pilots. Key words: Acceleration;  Hypergravity;  Methods;  Anti-G maneuver;  Centrifuge training