CAJ | 학술논문

实验研究了收敛喷管在高温（约913 K）、高速（超临界）流动状态下，加装小突片后对热排气的红外辐射抑制特性，并探讨了小突片安装片数、后倾角度、堵塞比等因素对红外辐射抑制特性的影响。结果表明，小突片对热排气的红外辐射具有明显的抑制作用，与不装小突片时相比，不仅使热排气的核心区长度大为缩短，而且使热排气的总体红外辐射信号大幅度下降（在实验范围内，最大可下降约73%）。
실험연구료수렴분관재고온（약913 K）、고속（초림계）류동상태하，가장소돌편후대열배기적홍외복사억제특성，병탐토료소돌편안장편수、후경각도、도새비등인소대홍외복사억제특성적영향。결과표명，소돌편대열배기적홍외복사구유명현적억제작용，여불장소돌편시상비，불부사열배기적핵심구장도대위축단，이차사열배기적총체홍외복사신호대폭도하강（재실험범위내，최대가하강약73%）。
Investigated the effect of tabs fixed on a convergent nozzle to the infrared radiation of the exhausting high speed (supersonic) hot (about 640 ℃) jets, and studied the influence of tab block ratio and inclined angle on the suppression of infrared radiation. The results show that tabs can greatly shorten the length of hot core region and dramatically suppress the infrared radiation up to about 73% from the hot jet, under the test range .