Design of Composite Material Chambers for Solid Propellant Missile Motors
NAVAL PLANT BRANCH REPRESENTATIVES OFFICE MAGNA UT
Pagination or Media Count:
A review of the technical research on composite materials used in the manufacture of solid propellant missiles was conducted. Current design methods were compared to the methods given in the literature. Most of the designers of composite structures use empirical relationships based on data compiled from previous designs, to predict the structures characteristics. No universal approach to characterization of material properties of composites has been found, because no one has been able to adequately characterize the material properties of the constituent materials and their interrelationships. Recent analyses have shown that only finite element analysis FEA can adequately represent the material loading within the composite matrix. Accurate material properties, obtained only by detailed analysis of experimental work, are required to be used in the calculations. The properties are deduced from the experimental results by computer analysis by finite elements. Accurate analysis of the total structure of a composite material chamber will also require the use of 3-dimensional FEA. The use of 3-D FE has been limited because of computer time and costs. However, new computers will now handle reasonable sized 3- dimensional problems within acceptable limits of time and cost.
- Laminates and Composite Materials
- Solid Propellant Rocket Engines