Hrebien L
Air Vehicle and Crew Systems Technology Department, Naval Air Development Center, Warminster, PA 18974-5000.
Aviat Space Environ Med. 1988 Jan;59(1):29-31.
We have found that pulse wave delay increases linearly with +Gz experienced by conscious subjects and that G-tolerance limits, as measured using conventional light bars, occur repeatedly at the same pulse wave delays or delta delay. When protective modalities such as anti-G suits or supinating seats are used, the delta delays increase at a slower rate as a function of +Gz. G-tolerance thresholds occur at higher +Gz levels with protection but the delta pulse wave delays reach the same value for all tolerance levels. This parameter can be used to warn expert systems of the approach of G-LOC during actual flight and/or provides an objective measure of G protection provided by new or modified anti-G equipment. Therefore, this tool can be used in the research setting to evaluate the efficacy of G-protective equipment in an objective manner.
我们发现，在清醒受试者中，脉搏波延迟随 +Gz呈线性增加，并且使用传统光条测量的G耐力极限在相同的脉搏波延迟或延迟增量时反复出现。当使用抗荷服或仰卧座椅等防护方式时，延迟增量随 +Gz的函数增加速度较慢。使用防护措施时，G耐力阈值在更高的 +Gz水平出现，但所有耐力水平下的脉搏波延迟增量达到相同值。该参数可用于在实际飞行期间向专家系统警告G-LOC的临近，和/或提供由新型或改良抗荷装备提供的G防护的客观测量。因此，该工具可用于研究环境中以客观方式评估G防护装备的功效。
