Solid Propellant Structural Test Vehicle Techniques For Measuring Stress Strain And Temperature In Solid Propellant Motors PDF Download

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Solid Propellant Structural Test Vehicle. Techniques for Measuring Stress, Strain and Temperature in Solid Propellant Motors

Solid Propellant Structural Test Vehicle. Techniques for Measuring Stress, Strain and Temperature in Solid Propellant Motors
Author:
Publisher:
Total Pages: 134
Release: 1971
Genre:
ISBN:

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The report summarizes experience gained on propellant grain instrumentation during 3 years of effort on the AFRPL-sponsored Structural Test Vehicle (STV) Program. The report discusses the types of stress-, strain-, and temperature-measuring transducers available for use in solid propellant grains, methods of calibrating the transducers, installation techniques, and special handling problems. The report is designed for use as a practical 'how to do' guide in the study of propellant grain structural integrity.


Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures

Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures
Author: Sook-Ying Ho
Publisher: Bentham Science Publishers
Total Pages: 194
Release: 2010
Genre: Technology & Engineering
ISBN: 1608050246

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This book deals with structural failure (induced by mechanical, aerodynamic, acoustic and aero-thermal, loads, etc.) of modern aerospace vehicles, in particular high-speed aircraft, solid propellant rocket systems and hypersonic flight vehicles, where structural integrity, failure prediction and service life assessment are particularly challenging, due to the increasingly more demanding mission requirements and the use of non-traditional materials, such as non-metallic composites, in their construction. Prediction of the complex loading environment seen in high-speed operation and constitutive / fracture models which can adequately describe the non-linear behaviour exhibited by advanced alloys and composite materials are critical in analyzing the non-linear structural response of modern aerospace vehicles and structures. The state-of-the-art of the different structural integrity assessment and prediction methodologies (including non-destructive structural health monitoring techniques) used for the structural design, service life assessment and failure analysis of the different types of aerospace vehicles are presented. The chapters are written by experts from aerospace / defence research organizations and academia in the fields of solid mechanics, and structural mechanics and dynamics of aircraft, rocket and hypersonic systems. The book will serve as a useful reference document containing specialist knowledge on appropriate prediction methodologies for a given circumstance and experimental data acquired from multi-national collaborative programs.


Solid Propellant Structural Test Vehicle Program

Solid Propellant Structural Test Vehicle Program
Author: H. Leeming
Publisher:
Total Pages: 332
Release: 1972
Genre:
ISBN:

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Results of the third year of the Structural Test Vehicle (STV) program conducted by Lockheed Propulsion Company for AFRPL are presented. Improved computer codes were used for viscoelastic analyses of a diaphragm gage in a uniaxial propellant specimen subject to constant stress, constant strain, and cyclic tests. A three-dimensional computer code was used to analyze a shear cube under simple loading conditions and to confirm experimental findings that the interference problem is minimal and that a slight cross sensitivity exists. Experimental data show the performance of shear gages in a biaxial (diametral compression) stress field and under cyclical shear loading. Results of restrained cooling and heating tests are presented and compared with analysis. Dilatational experimental and analytical work suggests an improved approach for the determination of thermal strain in a circular port grain. Improved material characterization techniques are also described. Results of thermal cycling and cooling experiments on 4-point-star, inert-propellant STV No. 6 are given. Gage readings measured during the tests are discussed and compared with analysis. A technique for removal of gages from old motors and STVs by chemical milling is discussed. Finally a modified system is described for coding microfilm data of STV, and inert propellant and gage calibration data.


Solid Propellant Structural Test Vehicle, Cumulative Damage, and Systems Analysis

Solid Propellant Structural Test Vehicle, Cumulative Damage, and Systems Analysis
Author: H. Leeming
Publisher:
Total Pages: 378
Release: 1968
Genre:
ISBN:

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This report covers a one-year program of work concerned with the development of instrumented Structural Test Vehicles (STVs), studies related to damage accumulation with propellants and studies of systems analysis as applied to solid propellant motor design. Section 2 of this report details the experimental propellant characteristization tests. Stress relaxation and failure data are given as well as the effects of storage on the propellant properties. Section 3 considers STV design and the instrumentation problem areas. Section 4 details the analytical work performed for the STV configurations and the gage-grain problem area. Two new computer programs are given and the problems of material nonlinearities are reviewed. Also, experimental STV stress-strain data are compared with the analytical predictions. Section 5 is concerned with two areas related to cumulative damage (1) the use of propellant volumetric dilatation as a damage index and (2) the calculation of transient thermal stresses. Section 6 illustrates the technique for using a systems analysis approach to rocket motor structural design problems by means of a specific example. (Author).


Mechanics and Chemistry of Solid Propellants

Mechanics and Chemistry of Solid Propellants
Author: A. C. Eringen
Publisher: Elsevier
Total Pages: 648
Release: 2014-06-28
Genre: Technology & Engineering
ISBN: 148322340X

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Mechanics and Chemistry of Solid Propellants is a collection of papers presented at the Fourth Symposium on Naval Structural Mechanics, held in Purdue University, Lafayette, Indiana on April 19-21, 1965 under the joint sponsorship of the Office of Naval Research and Purdue University. The contributors consider the development and utilization of solid propellants. This book is composed of 22 chapters that cover the many branches of studies that touch upon the science and technology of solid propellants. Some chapters present the mathematical and physical theories underlying the behavior of solid propellants, such as nonlinear and linear theories of viscoelasticity. Other chapters are devoted to advances in solid propellant binder chemistry; combustion and its effects on the structural integrity of the solid propellant grain; and design and other engineering problems. This book will be of value to scientists, engineers, and researchers who are interested in the diverse applications of solid propellants.


Solid Propellant Structural Test Vehicle and Systems Analysis

Solid Propellant Structural Test Vehicle and Systems Analysis
Author: H. Leeming
Publisher:
Total Pages: 294
Release: 1970
Genre:
ISBN:

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This report covers the second year of a program for the development of instrumented Structural Test Vehicles (STVs) and systems analysi for solid propellant motor design. The work follows that described in AFRPL-TR-68-130. This report supplements and uses data given in that earlier report. Additional data for 0064-61E propellant, Solithane 113 elastomer, and a new inert propellant are detailed. The problems of STV grain analysis, gage-grain interaction, and gage output interpretation, i.e., calibration techniques, also are covered. Nonisothermal grain analysis remains the largest problem area. Failure prediction for STVs and inert analog motors is discussed. Predictions are based on conventional techniques, fracture mechanics, and cumulative damage approaches. STV test data are presented for isothermal pressurization, slow cooling and heating, and transient or temperature cycling conditions. Data include failure tests on STVs and inert analog motors. Details of a new STV also are presented. The data are compared with analytical predictions to show that despite improved analyses and extensive propellant characterization, predictions of grain stresses and failure leave much to be desired. Further work is described on methods of applying systems analysis to motor design. The relation of engineering parameters to propellant chemistry is reviewed, and further work is described on an interaction analysis of material properties, motor design, and mission parameters. (Author).


STAR

STAR
Author:
Publisher:
Total Pages: 1230
Release: 1966
Genre: Aeronautics
ISBN:

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