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目的研究以新型囊式抗荷系统、无胸部代偿的抗荷加压呼吸及PHP动作组成的新型综合抗荷措施防护效果;探讨采用该措施进行防护时伴有的疲劳、疼痛等问题。方法6名被试者在载人离心机上进行了5组+Gz暴露试验,分别为:1)基础+Gz耐力试验(relaxed tolerance):测定被试者不使用抗荷装备,不做抗荷动作时的+Gz耐力。2)FLH-x联合救生服配KT-x抗荷调压器试验(FLH-x+KT-x):测定被试者穿FLH-x联合救生服配KT-x抗荷调压器时的+Gz耐力。3)FLH-x+KT-x+PBG试验(PBG):测定被试者穿FLH-x联合救生服配KT-x抗荷调压器,戴TK-x保护头盔、YM-x加压供氧面罩配YTQ-x氧气调节器进行抗荷加压呼吸时的+Gz耐力。4)6.5G持续45s试验(6.5G45s):被试者使用与第3组试验相同的抗荷装备,进行+6.5Gz持续45s的暴露。5)9.0G持续15s试验(9.0G15s):被试者使用与第3组试验相同的抗荷装备,做PHP动作,进行+9.0Gz持续15s的暴露。在每次试验结束后用主观量表记录被试者疲劳及疼痛的程度。结果试验中没有发生G-LOC(G-inducedloseofconsciousness)。FLH-x联合救生服配KT-x抗荷调压器的抗荷效果为2.5G;PBG的抗荷效果为1.67G;被试者均完成了6.5G持续45s及9.0G持续15s试验。试验中被试者的颈、腰、臂及手部在+Gz暴露时均出现过疼痛。结论新型综合抗荷措施可以满足现代高性能战斗机的高G防护需要;该措施还应在高G导致的疼痛及颈部损伤的防护方面加以改进。
Objective To study the protective effect of new comprehensive anti-stress measures consisting of a new cystic anti-charge system, anti-stress-free respiration without chest decompression, and PHP motions. The fatigue, pain and other problems associated with this measure are also discussed. Methods Six subjects underwent 5 + Gz exposures in a manned centrifuge, which were: 1) G + tolerance (relaxed tolerance): The subjects were tested for not using anti-load equipment and not for anti-load operation When + Gz endurance. 2) FLH-x joint rescue suit with KT-x anti-voltage regulator test (FLH-x + KT-x): The subjects were measured when wearing FLH-x joint rescue suit with KT-x anti-load regulator + Gz endurance. 3) The FLH-x + KT-x + PBG test (PBG): The subjects were tested for wearing a FLT-x QL with KT-x anti-voltage regulator, TK-x helmet and YM-x Oxygen mask with YTQ-x oxygen regulator for resistance to pressure breathing + Gz endurance. 4) 6.5G for 45s (6.5G45s): Subjects were exposed to +6.5 Gz for 45s using the same charge-resistant equipment as in Group 3. 5) 9.0G for 15s (9.0G15s): Subjects used the same anti-load equipment as in the third experiment to perform PHP motions and + 9.0Gz for 15s. At the end of each trial, subjective scales were used to record subjects’ degree of fatigue and pain. No G-LOC (G-LOC) was observed in the results of the experiment. The anti-load effect of FLH-x joint rescue suit with KT-x anti-voltage regulator was 2.5G; the anti-charge effect of PBG was 1.67G; subjects completed 6.5G for 45s and 9.0G for 15s. The subjects’ neck, lumbar, arm, and hand experienced pain during + Gz exposure. Conclusions The new integrated anti-load measures meet the high G protection requirements of modern high-performance fighter jets; this measure should also be improved in the protection of pain and neck injuries caused by high G levels.