Investigation on metal diaphragm of pulse separation device in dual-pulse solid rocket motor

2016 ◽  
Vol 231 (3) ◽  
pp. 444-451 ◽  
Author(s):  
Wang Chunguang ◽  
Chen Cong ◽  
Ren Quanbin ◽  
Chen Ke
Keyword(s):  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Separation Device ◽  
Pulse Separation ◽  
Single Term ◽  
Solid Rocket ◽  
Relationship Of ◽  
The Relationship ◽  
Metal Diaphragm ◽  
Physical Dimensions

The theories of circular plates with large deflection and fracture mechanics were employed to investigate the calculating formula of stress intensity factor on prefab gap. The relationship of the opening pressure with physical dimensions of hard pulse separation device (PSD) was analyzed to achieve the feasible configuration of metal diaphragm, which could play a very important role in dual-pulse solid rocket motor. Moreover, six specific single-term tests of the metal diaphragm were conducted to validate the computing precision of designing formula. In addition, three kinds of scale experiments, e.g. the bearing test, opening test, and associated test were performed to explore the working characters of hard pulse separation device. The results indicate that the error between the experimental results and designing results is 4.4%, and the method can be applied to design the physical dimensions of metal diaphragm. The performances of bearing ability, sealability, opening and melt of PSD have been demonstrated. The results show that this kind of PSD can satisfy the requirements of dual-pulse solid rocket motor very well.

Numerical Analysis and Test Research on Work Process of PSD in Pulse Solid Rocket Motor

2012 ◽  
Vol 490-495 ◽  
pp. 2290-2294
Author(s):  
Wei Ping Tian ◽  
Chun Guang Wang ◽  
Cong Chen ◽  
De Min Yang
Keyword(s):  
Numerical Analysis ◽  
Engineering Application ◽  
Rocket Motor ◽  
Test Method ◽  
Solid Rocket Motor ◽  
Work Process ◽  
Separation Device ◽  
Pulse Separation ◽  
Design Requirements ◽  
Solid Rocket

To achieve engineering application of pulse motor as soon as possible,designed a soft pulse separation device(PSD), numerical simulated its process of bearing pressure and turning on,used the XFEM to simulate its failure form,got strain and stress distribution,found the bearing capability and failure form of the structure of soft PSD was reliable;Designed a few of verification monomial tests,verified the accuracy of simulation,proved that its bearing capability and failure form satisfied with design requirements,could be applied to pulse motor.The simulation technique,test method and conclusion are useful for designing pulse solid rocket motor configuration.

Numerical study of the internal flow field of a dual pulse solid rocket motor including conjugate heat transfer

2016 ◽  
Vol 231 (8) ◽  
pp. 1535-1549 ◽  
Author(s):  
Ying-kun Li ◽  
Jun-li Han ◽  
Xiong Chen ◽  
Rui Liu ◽  
Jin-sheng Xu
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Local Heat Transfer Coefficient ◽  
Solid Rocket Motor ◽  
Separation Device ◽  
Pulse Separation ◽  
Solid Rocket

Numerical simulations were performed to study the influence of the inside diameter of the pulse separation device port on the flow features and the local heat transfer characteristics in a dual pulse solid rocket motor. A lower–upper symmetric Gauss–Seidel implicit dual time-stepping method was applied to address the problem of unsteady flow. A high-resolution upwind scheme (AUSMPW+) and Menter’s shear stress transport turbulence model were employed to solve the Reynolds-averaged Navier–Stokes equations. The conjugate heat transfer strategy was realized by enforcing a common temperature and heat flux at the fluid–solid interface. After validating the accuracy and reliability of the numerical algorithm by comparison with experimental cases, the internal flow of a dual pulse solid rocket motor was simulated. The results show that the magnitude of the velocity, the wall shear stress, and the turbulent kinetic energy downstream of the pulse separation device port decrease with increasing pulse separation device port diameter. The local heat transfer coefficient increases sharply downstream of the pulse separation device port, reaching a maximum within 1–2 diameters downstream of the pulse separation device port, before relaxing back to the fully developed pipe flow value. The peak value of the local heat transfer coefficient reduces as the pulse separation device port diameter increases. Meanwhile with an increasing pulse separation device port diameter, the position of the peak local heat transfer coefficient moves upstream to the head of the first pulse chamber, and appears upstream of the position of the reattachment point by an average of about 28.6%.

Review of the Influence of Poisson's Ratio on the Solid Propellant’s Structure and Properties

2014 ◽  
Vol 1030-1032 ◽  
pp. 268-271
Author(s):  
Xiao Zhang ◽  
Jian Zheng ◽  
Wei Peng ◽  
Zhi Xu Gu
Keyword(s):  
Poisson’S Ratio ◽  
Structural Integrity ◽  
Rocket Motor ◽  
Poisson's Ratio ◽  
Research Progress ◽  
Structure And Properties ◽  
Solid Rocket Motor ◽  
Solid Rocket ◽  
The Relationship

In this paper, the influence of Poisson's ratio on the solid propellant’s structure and properties was summarized. Methods and important results were introduced, which indicated the research progress in the relationship between Poisson’s ratio and structural integrity of solid rocket motor (SRM).

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