CAJ | 학술논문

目的研究以新型氧气系统、囊式抗荷装备和PHP动作组成的双人综合抗荷措施的防护性能. 方法 2具假人和7名健康志愿者在载人离心机上进行6组试验:①抗荷装备的动态物理性能试验;②静态人体生理试验;③服装配抗调器的抗荷性能试验;④抗荷正压呼吸性能试验;⑤受试者采取综合抗荷措施进行6.5G持续45 s试验;⑥受试者采取综合抗荷措施进行8.5G持续15 s试验.动态性能试验时+Gz增长率为3 G/s. 结果氧气浓缩器入口压力0.25 MPa和0.20 MPa时的吸气相面罩压最低值(Pmi)均显著大于0.16 MPa时(P＜0.05).服装配抗调器的抗荷性能为(2.11±0.12)G,抗荷正压呼吸性能为(2.07±0.11)G,受试者使用综合抗荷措施均完成了6.5G持续45 s和8.5G持续15 s试验. 结论新型氧气系统的氧气浓缩器采用0.20 MPa入口压力,可以满足抗荷正压呼吸时双人同时做抗荷动作的需求.综合抗荷措施可以提供6.5G持续45 s和8.5G持续15s的防护.该综合抗荷措施采用的抗荷正压呼吸有助于预防发生呼吸不适反应.需要进一步研究确定同时满足装备抗荷性能和舒适性要求的预充压值.
목적 연구이신형양기계통、낭식항하장비화PHP동작조성적쌍인종합항하조시적방호성능. 방법 2구가인화7명건강지원자재재인리심궤상진행6조시험:①항하장비적동태물이성능시험;②정태인체생리시험;③복장배항조기적항하성능시험;④항하정압호흡성능시험;⑤수시자채취종합항하조시진행6.5G지속45 s시험;⑥수시자채취종합항하조시진행8.5G지속15 s시험.동태성능시험시+Gz증장솔위3 G/s. 결과 양기농축기입구압력0.25 MPa화0.20 MPa시적흡기상면조압최저치(Pmi)균현저대우0.16 MPa시(P＜0.05).복장배항조기적항하성능위(2.11±0.12)G,항하정압호흡성능위(2.07±0.11)G,수시자사용종합항하조시균완성료6.5G지속45 s화8.5G지속15 s시험. 결론 신형양기계통적양기농축기채용0.20 MPa입구압력,가이만족항하정압호흡시쌍인동시주항하동작적수구.종합항하조시가이제공6.5G지속45 s화8.5G지속15s적방호.해종합항하조시채용적항하정압호흡유조우예방발생호흡불괄반응.수요진일보연구학정동시만족장비항하성능화서괄성요구적예충압치.
Objective To evaluate the protection effect of combined anti-G prevention for two seater pilots which was composed of a new type oxygen supply system,bladder type anti-G suit and PHP maneuver.Methods Six sets of experiments were carried out on human centrifuge.Two dummies and seven healthy volunteers with individual protection equipment underwent the experiments of:①The dynamic physical performance of anti G equipment.② The static physiological test of combined anti-G prevention.③The +Gz tolerance test when using KT-x anti-G valve and protection suits.④+Gz protection test afforded by pressure breathing for G (PBG).⑤6.5 G for 45 s centrifuge exposure with combined prevention.⑥8.5 G for 15 s centrifuge exposure with combined prevention.The +Gz onset rate was 3 G/s in dynamic performance studies.Results The minimal mask pressure when respectively inspiring (Pmi) under 0.25 MPa and 0.20 MPa air inlet pressure supply was significantly greater than that under 0.16 MPa inlet pressure(P＜0.05).The protection effect of antiG valve and protection suits was (2.11±0.12) G and it was (2.07±0.11) G as with PBG.All subjects completed 6.5 G for 45 s and 8.5 G for 15 s exposures with the combined anti-G prevention.Conclusions The 0.20 MPa air inlet pressure would be adequate for two pilots performing PHP maneuver simultaneously when using PBG.The combined anti-G prevention could provide protection at 6.5 G for 45 s and at 8.5 G for 15 s.The PBG adopted in this combined anti-G prevention would be helpful to prevent the occurrence of discomfort respiratory symptom.Further investigation would be concentrate on determining the proper pre-pressure value which would meet the anti-G as well as comfort requirements.