Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

2020 ◽  
Vol 138 (9) ◽  
pp. 49934 ◽  
Author(s):  
Kesiya George ◽  
Smita Mohanty ◽  
Manoranjan Biswal ◽  
Sanjay K. Nayak
Keyword(s):  
Thermal Insulation ◽  
Hybrid Composites ◽  
Rocket Motor ◽  
Ethylene Propylene Diene Monomer ◽  
Solid Rocket Motor ◽  
Ethylene Propylene ◽  
Kevlar Fiber ◽  
Solid Rocket

Thermal insulation by heat resistant polymers for solid rocket motor insulation

2011 ◽  
Vol 46 (13) ◽  
pp. 1549-1559 ◽  
Author(s):  
Ashraf Fathy Ahmed ◽  
Suong V Hoa
Keyword(s):  
Carbon Fiber ◽  
Flame Retardant ◽  
Rocket Motor ◽  
New Method ◽  
Ethylene Propylene Diene Monomer ◽  
Solid Rocket Motor ◽  
Fabrication And Characterization ◽  
Solid Rocket ◽  
Master Batch

A new method for the development (design, fabrication, and characterization) of asbestos-free rubbers for use as rocket motor insulators is presented. Such insulation is based on chopped carbon fiber (CCF) and aramid fiber in pulp form asreinforcement for ethylene propylene diene monomer (EPDM) along with ammonium polyphosphate (AP) flame retardant agent. Six millimeters long CCFs and/or Kevlar pulp (KP) are dispersed in the EPDM polymeric matrix to obtain a homogenous master batch for curing. The new method involves the development of two types of prepregs andthe lamination of these types of prepregs. The first one consists of CCF/EPDM/AP (50 phr CCF) and the second type of prepreg KP/EPDM/AP (30 phr KP). Laminates composed of six alternative layers of these prepregs have been shown to exhibit better thermal, mechanical, physical, and ablative properties than their non-laminated counterparts.

Effects of aramid fibers and colloidal particle fillers in composite ethylene propylene diene monomer rubber thermal insulators for rocket motor insulation

2017 ◽  
Vol 52 (15) ◽  
pp. 1989-1995 ◽  
Author(s):  
AM El-Dakhakhny ◽  
AF Ahmed ◽  
M Rutkevičius ◽  
S El-Marsafy ◽  
E Abadeer
Keyword(s):  
Thermal Properties ◽  
Rocket Motor ◽  
Mechanical And Thermal Properties ◽  
Insulation Material ◽  
Ethylene Propylene Diene Monomer ◽  
Rocket Motors ◽  
Ethylene Propylene ◽  
Ablation Resistance ◽  
Solid Rocket ◽  
Hybrid Reinforcement

In this study, we develop and characterize an asbestos-free rubber composite for potential use as a rocket motor insulator. The insulator is based on ethylene propylene diene monomer blended with aramid fiber (Kevlar) in the pulp form (KP), together with alumina and/or silica as reinforcement. Different formulations based on these fillers were prepared. The fillers were dispersed in the ethylene propylene diene monomer polymeric matrix to obtain a homogenous master batch for curing. We analyzed and compared physical, mechanical and thermal properties of different compositions (density, hardness, tensile strength, elongation, ablation resistance and mass loss on heating). Reinforcement of ethylene propylene diene monomer with Kevlar improves the performance of the material with respect to mechanical and thermal properties, while not improving well the performance with respect to ablation resistance. Using hybrid reinforcement (KP + alumina + silica) within ethylene propylene diene monomer improves the performance of ethylene propylene diene monomer with respect to mechanical properties, thermal properties, ablation resistance and thermal decomposition resistance. The optimum performance of the insulation material was achieved when the formulation consisted of 10 part per hundred ratio KP with even amounts of alumina and silica. A novel composite engineered for improved insulation of solid rocket motors using the hybrid reinforcements was developed for the first time, which can be applied in future space missions.

Structural behavior of solid rocket motor field joints

1987 ◽  
Author(s):  
MICHAEL CARD ◽  
ROBERT WINGATE
Keyword(s):  
Rocket Motor ◽  
Structural Behavior ◽  
Solid Rocket Motor ◽  
Solid Rocket

Debond defect detection in shell of solid rocket motor by thermal wave nondestructive testing

2012 ◽  
Vol 29 (3) ◽  
pp. 252-257
Author(s):  
Yuan-jia SONG ◽  
Wei ZHANG ◽  
Zheng-wei YANG ◽  
Gan TIAN
Keyword(s):  
Nondestructive Testing ◽  
Defect Detection ◽  
Thermal Wave ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Solid Rocket

Experimental and Numerical Characterization of Polymer Nanocomposites for Solid Rocket Motor Internal Insulation

2009 ◽  
Author(s):  
J. H. Koo ◽  
O. A. Ezekoye ◽  
M. C. Bruns ◽  
J. C. Lee
Keyword(s):  
Polymer Nanocomposites ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Numerical Characterization ◽  
Solid Rocket

Analysis of measured stress data in a solid rocket motor

2000 ◽  
Vol 42 ◽  
pp. 1305 ◽  
Author(s):  
D.H. Smith ◽  
S.Y. Ho
Keyword(s):  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Measured Stress ◽  
Solid Rocket
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