Li Jing, Tian Yinsheng, Ding Li, Zou Huijuan, Ren Zhaosheng, Shi Liyong, Feathers David, Wang Ning
School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
Department of Integrated Systems Engineering, The Ohio State University, Columbus, OH, USA.
Work. 2015 Jun 5;51(2):215-22. doi: 10.3233/WOR-141842.
High-temperatures in the cockpit environment can adversely influence pilot behavior and performance.
To investigate the impact of high thermal environments on Chinese pilot performance in a simulated cockpit environment.
Ten subjects volunteered to participate in the tests under 40°C and 45°C high-temperature simulations in an environmentally controlled chamber. Measures such as grip strength, perception, dexterity, somatic sense reaction, and analytical reasoning were taken. The results were compared to the Combined Index of Heat Stress (CIHS).
CIHS exceeded the heat stress safety limit after 45 min under 40°C, grip strength decreased by 12% and somatic perception became 2.89 times larger than the initial value. In the case of 45°C, CIHS exceeded the safety limit after only 20 min, while the grip strength decreased just by 3.2% and somatic perception increased to 4.36 times larger than the initial value. Reaction and finger dexterity were not statistically different from baseline measurements, but the error rate of analytical reasoning test rose remarkably.
Somatic perception was the most sensitive index to high-temperature, followed by grip strength. Results of this paper may help to improve environmental control design of new fighter cockpit and for pilot physiology and cockpit environment ergonomics research for Chinese pilots.
驾驶舱环境中的高温会对飞行员的行为和表现产生不利影响。
在模拟驾驶舱环境中研究高温环境对中国飞行员表现的影响。
10名受试者自愿在环境控制舱内40°C和45°C的高温模拟条件下参加测试。测量了握力、感知、敏捷性、躯体感觉反应和分析推理等指标。并将结果与热应激综合指数（CIHS）进行比较。
在40°C条件下，45分钟后CIHS超过热应激安全限值，握力下降12%，躯体感觉比初始值增大2.89倍。在45°C条件下，仅20分钟后CIHS就超过安全限值，而握力仅下降3.2%，躯体感觉增大到初始值的4.36倍。反应和手指敏捷性与基线测量值无统计学差异，但分析推理测试的错误率显著上升。
躯体感觉是对高温最敏感的指标，其次是握力。本文结果可能有助于改进新型战斗机驾驶舱的环境控制设计，并为中国飞行员的生理和驾驶舱环境人机工程学研究提供帮助。
