Heat strain during at-sea helicopter operations and the effect of passive microclimate cooling.
Heat strain during at-sea helicopter operations and the effect of passive microclimate cooling.
复制标题
海上直升机作业期间的热应变和被动微气候冷却的影响。
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
D. E. Braun
中科院分区：
文献类型：
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作者：
G. Banta;D. E. Braun
在波斯湾高温环境下的海上作业期间，12 名海军 H-3 直升机机组人员在微气候冷却（冰）背心和非背心条件下接受了监测（心率、皮肤和直肠温度）。在所有飞行和飞行阶段，环境干球温度范围为 31.0 摄氏度（飞行中）至 48.6 摄氏度（悬停）。在不穿冰背心的情况下，悬停和在甲板上时心率最高（范围：89.9 至 145.0 次/分钟），但佩戴冰后心率显着降低（范围：79.7 至 86.0 次/分钟）（p 小于 0.05）。未发现背心和非背心条件下的直肠温度存在差异；然而，两种情况下飞行阶段的变化都很显着（p 小于 0.05）。方差分析表明，穿着冰背心时，平均加权皮肤温度显着降低（p 小于 0.05）。这些数据表明，穿着防护冷却背心可以减少与直升机在高温环境中飞行相关的热应变。
Twelve Navy H-3 helicopter aircrew members were monitored (heart rate, skin and rectal temperatures) in both microclimate cooling (ice) vest and non-vest conditions during at-sea operations in the high heat environment of the Persian Gulf. During all flights and flight phases, ambient dry bulb temperatures ranged from 31.0 degrees C (in-flight) to 48.6 degrees C (hover). Heart rate was greatest during hover and on-deck (range: 89.9 to 145.0 beats/min) without an ice vest, yet was significantly reduced with ice (range: 79.7 to 86.0 beats/min) (p less than 0.05). Rectal temperature was not found to be different between vest and non-vest conditions; however, change across flight phases in both conditions was significant (p less than 0.05). Analysis of variance demonstrated significantly lower mean weighted skin temperatures (p less than 0.05) when wearing the ice vest. These data suggest that wearing a protective cooling vest can reduce the heat strain associated with helicopter flight in high heat environments.