| 1. | Curves of constant specific impulse are traced inside the triangle .
比冲为常数的曲线则画在三角形内部。 |
| 2. | The internal structure has been optimized to reduce the heat loss and increase the specific impulse
本文通过优化发动机其内部结构,减小了热损失,提高了比冲。 |
| 3. | Electric propulsion ( ep ) has many advantages of high specific impulse , long lifetime and high controlling precision
电推进系统具有比冲高、寿命长、可完成多种空间任务而日益受到国内外高度重视。 |
| 4. | The results showed that the thrust - weight ratio reached 1 . 04 for the launch weight 5400kg in the condition of specific impulse near 600s
结果表明:在发动机工作比冲接近600s的情况下,对于起飞质量为5400kg的飞行器而言,推重比为1 . 04左右。 |
| 5. | Electric propulsion ( ep ) has many advantages of high specific impulse , long lifetime , high controlling precision . it can perform many kinds of space mission
电推进( ep )具有比冲高、寿命长、控制精度高等优点，可完成多种空间任务。 |
| 6. | The results are compared with old ones . it is clear that arc voltage , thrust , specific impulse , efficiency and stability are all improved remarkably
结构改进后,发动机的弧电压、推力、比冲等性能以及各工况下的工作稳定性都得到了显著改善。 |
| 7. | To optimize specific impulse to 700s or 800s , the thrust - weight ratio could be improved to 1 . 23 or 1 . 41 , it is enough to achieve the launch requirement for this vehicle
进一步将比冲优化至700s或800s ,可以将推重比提高至1 . 23或1 . 41 ,这样就完全能够保证发射任务的完成。 |
| 8. | The research indicates that mpt shows many advantages , such as moderate specific impulse , high efficiency , long lifetime , low plume contamination , simple structure , low weight , and so on
通过研究表明， mpt具有比冲适中、效率高、寿命长、羽流污染小、结构简单和重量轻的特点。 |
| 9. | With the development of rocket technique and increasing requirement of large - power launch vehicle , the cryogenic propellant with higher specific impulse is applied more and more widely
随着国际运载火箭朝着大功率和多样化的两极方向发展，大比推力的液氢液氧推进剂成为大功率运载火箭的主要推进剂。 |
| 10. | Performance research on new designed arcjet was carried out when argon was used as propellant . the specific impulse and efficiency of the new designed arcjet were compared to the same of the original one
采用氩为推进剂,对电弧加热发动机进行性能研究,并将新发动机的比冲和效率与原电弧加热发动机进行对比。 |
