航空兵器
航空兵器
항공병기
Aero Weaponry
2015年
5期
69-72
,共4页
李记威%李世鹏%商慧增%职世君
李記威%李世鵬%商慧增%職世君
리기위%리세붕%상혜증%직세군
微型脉冲推力器%内弹道%耦合传热%数值模拟
微型脈遲推力器%內彈道%耦閤傳熱%數值模擬
미형맥충추력기%내탄도%우합전열%수치모의
solid impulsive microthruster%interior ballistics process%coupled heat transfer%numeri-cal simulation
微型脉冲推力器工作过程瞬态性强, 传热过程具有高耦合性的特点. 本文利用移动网格模型对推力器整个工作过程进行了二维非稳态模拟.分别计算了不同点火药量下以及不同喷管打开控制压力下的内弹道过程,分析了点火药量等参数对内弹道的影响. 通过计算壳体绝热和耦合传热两种状态下的流动,分析了不同传热条件对推力器性能的影响. 最后,将仿真结果与推力器试车数据进行对比,指出影响推力器内弹道预估准确性的因素.
微型脈遲推力器工作過程瞬態性彊, 傳熱過程具有高耦閤性的特點. 本文利用移動網格模型對推力器整箇工作過程進行瞭二維非穩態模擬.分彆計算瞭不同點火藥量下以及不同噴管打開控製壓力下的內彈道過程,分析瞭點火藥量等參數對內彈道的影響. 通過計算殼體絕熱和耦閤傳熱兩種狀態下的流動,分析瞭不同傳熱條件對推力器性能的影響. 最後,將倣真結果與推力器試車數據進行對比,指齣影響推力器內彈道預估準確性的因素.
미형맥충추력기공작과정순태성강, 전열과정구유고우합성적특점. 본문이용이동망격모형대추력기정개공작과정진행료이유비은태모의.분별계산료불동점화약량하이급불동분관타개공제압력하적내탄도과정,분석료점화약량등삼수대내탄도적영향. 통과계산각체절열화우합전열량충상태하적류동,분석료불동전열조건대추력기성능적영향. 최후,장방진결과여추력기시차수거진행대비,지출영향추력기내탄도예고준학성적인소.
Solid impulsive microthruster bears transient property on the working process, and has coupled character on heat transfer.In the paper, 2-D transient simulation is carried on the working process of microthruster by dynamic mesh model.Interior ballistics process is calculated with different a-morce quantity and different unbolted pressure of nozzle, and the influence of amorce quantity on interior ballistics is analysed.Through calculating the flow in the conditions of shell heat insulation and coupled heat transfer, the influences of different heat transfer conditions on microthruster performance are ana-lyzed.At last, the result of simulation is contrasted with experimental data, and the matter of accuracy to forecast interior ballistics is pointed out.
