新型抗荷调压器动态物理与人体生理试验研究

Experiments on the dynamic physical performance and physiological protection of a new type anti-G valve

目的 观察新型(F型、S型)抗荷调压器(抗调器)在离心机上的动态物理性能与生理防护性能.方法 试验在载人离心机上进行.①动态物理性能试验:3台F型和1台S型抗调器,将抗调器高压级与KH-6抗荷服配套,低压级与KH-7抗荷服配套;对1号F型抗调器和S型抗调器在正常、倾斜22°及加湿后进行+Gz暴露试验.②人体生理试验:受试者为12名男性健康志愿者,先测定受试者的基础+Gz耐力,然后测定穿抗荷服充气时的最大+Gz耐力.其中5名受试者分别采用两台F型抗调器(2号、3号)的高压级配KH-6抗荷服、低压级配KH-7抗荷服;另7名受试者采用1台S型抗调器的高压级配KH-6抗荷服、低压级配KH-7抗荷服.结果 ①F型抗调器和S型抗调器的低压级与高压级的输出压力均在相应要求的上限或略高于上限.1号F型抗调器在倾斜22°时低压级和高压级的输出压力到达平稳工作阶段压力值时相对于+Gz曲线到达峰值时的延迟时间多大于0.5 s,在加湿后低压级的延迟时间多大于0.5 s,且高压级的输出压有明显波动.S型抗调器在倾斜22°和加湿后低压级与高压级的输出压力到达平稳工作阶段压力值时相对于+Gz曲线到达峰值时的延迟时间均小于0.5 s,且该时间加上输出压力开始上升时相对于+Gz曲线开始上升时的延迟时间也均小于2 s.②受试者采用2号F型抗调器配KH-6、KH-7抗荷服时的抗荷耐力分别提高2.10 G(t=14.00,P＜0.01)、2.15 G(t=21.50,P＜0.01),采用3号F型抗调器配KH-6、KH-7抗荷服的抗荷耐力分别提高2.20 G(t=23.52,P＜0.01)、2.20 G(t=44.00,P＜0.01).受试者采用S型抗调器配KH-6、KH-7抗荷服的抗荷耐力分别提高2.36 G(f=46.67,P＜0.01)、2.21 G(f=28.74,P＜0.01).结论 新型抗调器与抗荷服配套具有较高的抗荷性能,其结构的改进对提高倾斜安装、加湿后等环境的适应性有明显作用.

Objective To evaluate the dynamic physical performance and physiological protection of a new type anti-G valve.Methods The experiments were carried out on human centrifuge.① The dynamic physical performance of No.1 F-type and S-type anti-G valve in wellbalanced state, 22° lean state and humidifying state were evaluated respectively in two configurations which anti-G valve at high-pressure class worked with KH-6 anti-G suit and at low-pressure class worked with KH-7 suit.② Twelve healthy male volunteers served as subjects for the human physiological protection experiments.The relaxed + Gz tolerance was measured first, then the +Gztolerance with anti-G suit.Two F-type anti-G valves were evaluated by 5 subjects using the above mentioned two configurations.One S-type anti-G valve was evaluated by the rest 7 subjects using the same two configurations.Results ① The outlet pressure of both F-type and S-type anti-G valve was in accordance with or slightly higher than the required upper limit.The delay between the reaching time of G plateau and stable peak pressure of 22° tilted No.1 F-type anti-G valve was mostly longer than 0.5 s both at low-pressure and high-pressure class.When in humidifying state, the delay was longer than 0.5 at low-pressure class and an obvious fluctuation of outlet pressure at high-pressure class was observed.For the S-type anti-G valve, under 22° lean state and humidifying state both at low-pressure and high-pressure class, the delay between the reaching time of G plateau and stable peak pressure was shorter than 0.5 s.And the time added the delay between G climbing and the starting time of outlet pressure ascending was shorter than 2 s.② +Gz tolerance increment provided by the No.2 F-type anti-G valve combined with KH-6 and KH-7 anti-G valve was 2.10 G (t= 14.00, P＜0.01 and 2.15 G (t=21.50, P＜0.01) respectively, and 2.20 G (t=23.52, P＜0.01) and 2.20 G (t=44.00, P＜0.01) for the No.3.+Gz tolerance increment provided by the S-type anti-G valve with KH-6 and KH-7 anti-G valve was 2.36 G (t=46.67, P＜0.01) and 2.21 G (t=28.74, P＜0.01) respectively.Conclusions The new type anti-G valve combined with anti-G suit could provide enhanced anti-G capability.The modification and enhancement to the structure of valve have a distinct positive effect on its adaptability to special states like lean or in humidification.