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定量地研究膛内火药气体向炮管传导的总热量,是内弹道学中的经典问题之一。多年来,尽管热电偶的材料和结构装置有了不少改进,但它的响应速度一直满足不了炮管测温的需求。测量炮管内膛面温度时,热电偶的量程应从常温到1700°K,并能承受大约3500公斤/厘米~2的膛压,而且必须在微秒量级的时间内作出响应。对热电偶的这些要求是严格的。从一定程度上说,是相互矛盾的。为了使热电偶能经受多次重复性膛压,它的外壳必须粗大而坚固。考虑到内弹道过程只持续3—4毫秒,在这么短暂的时间内要保证有十分迅速的信号响
It is one of the classic problems in the interior ballistics to study quantitatively the total heat transfer from the gunpowder gas to the barrel. Over the years, although the thermocouple materials and structural devices have been greatly improved, but its response speed has been unable to meet the barrel temperature measurement needs. When measuring the barrel bore temperature, the thermocouple should measure from room temperature to 1700 ° K and withstand a bore pressure of about 3500 kg / cm² and must respond in microseconds. These requirements for thermocouples are strict. To some extent, it is contradictory. In order for the thermocouple to withstand multiple repetitive bore pressures, its housing must be thick and strong. Taking into account the internal ballistic process lasts only 3-4 milliseconds, in such a short period of time to ensure a very rapid signal