| 1. | There is a range of applied force over which the regression rate remains constant .
施加的力有一个范围，在这个范围内递减率保持不变。 |
| 2. | The plateau domain is defined as a pressure regime in which the regression rate is insensitive of pressure .
平台区是定义为这样一个压力区，即其中压力对速度没有影响。 |
| 3. | Model about regression rate of hybrid rocket motors was studied
研究了固液发动机固体燃料退移速率预示模型。 |
| 4. | The reasons for higher oxidizer flow rate , lower fuel regression rate and lower motor performance in both hot firings are discussed . several necessary improvements for the test system are suggested . 6
通过对两台发动机试验结果的分析，找出了试验中氧化剂流量偏高、燃料退移速率和发动机性能偏低的原因，并提出了具体的改进措施。 |
| 5. | The results of research indicate that the pressure , the thrust and the fuel regression rate of the motor decrease while the o / f ratio increasing with the burning time lasting . the special impulse reduces when throttling
研究结果表明：压强、推力和燃料退移速率随发动机工作时间增加而降低，氧化剂和燃料的配比升高；节流时，发动机比冲降低。 |
| 6. | The result of analysis shows that the convective heat flux has main effect on fuel pyrolyzing and vaporizing , the liquid layer of pe fuel can increase the regression rate but also can cause unstable burning . 4
研究结果表明：对流热流是引起燃料热解气化的主要因素， pe熔化产生的液体层提高了燃料热解退移速率，但液体层厚度增加到一定程度时，对发动机工作稳定性有负面影响。 |
| 7. | Through malfunction of the tests of 810 research institute , the combustion performance of the hybrid motor and model about regression rate have been studied in the dissertation . the main aspects are as follows : the performance of the hno3 + n2o4 - htpb hybrid rocket motor were all discussed
本文结合航天科技集团公司810研究所正在研制的ak - 20l / htpb + al组合固液火箭发动机,开展了固液火箭发动机混合燃烧特性的数值模拟工作,在此基础上给出固体燃料退移速率预示模型及预示结果。 |
| 8. | Combining with the energy fluxes balance above fuel surface , the simulation and calculation of transient heat conduction of the pe fuel with liquid layer while melting and pyrolyzing are considered by use of the moving coordinates . the calculated regression rate of the pe fuel approximately tallies with the same kind of hybrid rocket motor test data from the abroad
建立了pe燃料的熔化、热解、导热模型，应用动坐标系，结合燃料表面热环境，对具有液体层的pe燃料的熔化、热解和内部瞬态导热过程进行了模拟计算，计算的pe燃料退移速率与国外同类试验的测量结果符合较好。 |
