CAJ | 학술논문

考虑影响固体发动机低温点火适应性的推进剂低温力学性能、药柱固化降温应变以及药柱在发动机点火升压条件下应变等3个关键因素，设计了可用于全尺寸发动机低温点火适应性研究的?202 mm模拟试验发动机。通过选取合适的药柱设计参数和发动机初始压强，可对全尺寸发动机在低温点火下药柱应变状态进行模拟。模拟发动机已成功应用于A、B和C等全尺寸发动机低温-40℃或-50℃点火适应性研究中，获得了各发动机低温点火试车时的结构安全余量，可在类似发动机低温点火适应性研究中推广应用。
고필영향고체발동궤저온점화괄응성적추진제저온역학성능、약주고화강온응변이급약주재발동궤점화승압조건하응변등3개관건인소，설계료가용우전척촌발동궤저온점화괄응성연구적?202 mm모의시험발동궤。통과선취합괄적약주설계삼수화발동궤초시압강，가대전척촌발동궤재저온점화하약주응변상태진행모의。모의발동궤이성공응용우A、B화C등전척촌발동궤저온-40℃혹-50℃점화괄응성연구중，획득료각발동궤저온점화시차시적결구안전여량，가재유사발동궤저온점화괄응성연구중추엄응용。
Considering three key factors influencing solid rocket motor low temperature ignition adaptability,including low tem-perature mechanical property of solid propellant,grain strain induced by curing cooling down process,grain strain induced by ignition pressurization,the ?202 mm simulation solid motors were devised to investigate low temperature ignition adaptability of full-scale solid rocket motor.By choosing appropriate designing parameters of grain and initial operation pressure of simulation motors,the grain strain situation of full-scale solid rocket motors at low temperature ignition was simulated.The simulation motors were used to investi-gate low temperature ignition adaptability for A,B and C full-scale solid rocket motors at -40 ℃ or -50 ℃.The structure safety margin of each full-scale solid motor at low temperature ignition was gotten.The results can be widely used to investigate low temper-ature ignition adaptability for more solid motors.