Research on influence of diameter ratio and length-diameter ratio on structural integrity of solid propellant under temperature loading;
温度载荷下装药内外径比和长径比对结构完整性影响的规律研究
Five different mixing chamber geometries are tested experimentally with the stoichiometric gasoline-compressed air at frequency of 6 Hz and the effect of screw-pitch and inner diameter ratio on the performances of PDE is investigated.
实验针对爆震频率为6Hz、当量比为1的汽油和压缩空气混合气,实验研究了脉冲爆震发动机模型混合室内5种不同扰流螺纹螺距内径比对其性能的影响。
Effects of inner-radius-to-thickness ratio of composite pipes on velocity of guided waves;
复合管内径壁厚比对导波速度的影响
The relationship between the wave-packet duration of ultrasonic longitudinal guided waves with lower order and the inner-radius-thickness ratio(IRTR)of free pipes was analyzed at various propagation distances, various frequency-thickness products and various cycle numbers of the input pulse signal.
在自由管材的情况下,在各传播距离、各频厚积和各激发脉冲周数上,分析了内径-壁厚比和管材中较低阶纵向导波模式波包宽度的关系。