Design Considerations in Selecting Materials for Large Solid-propellant Rocket-motor Cases PDF Download
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Author: Charles Wesley Bert
Publisher:
ISBN:
Category : Heat resistant alloys
Languages : en
Pages : 80
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Book Description
Author: Charles Wesley Bert
Publisher:
ISBN:
Category : Heat resistant alloys
Languages : en
Pages : 80
Get Book Here
Book Description
Author: H. Badham
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
When considering the initial design of the case or load bearing components for a solid propellant rocket motor a number of possible solutions may be apparent and many factors need consideration before the design of the individual components can be finalised. The process of optimisation involves consideration of material properties, methods of manufacture, inspection and proof as well as interactions with other rocket motor and missile components. The various factors are considered and indications are given of the interactions to be taken into account. This paper concentrates primarily on the design of metallic motor cases. Both homogeneous and nonhomogeneous body structures are considered, the latter being fibre overwound metallic and strip laminates. A relatively recent requirements is that for insensitive munitions and this factor is also discussed relative to body construction.
Author: Carlton L. Horine
Publisher:
ISBN:
Category : Solid propellant rockets
Languages : en
Pages : 96
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Book Description
Author: James S. Noel
Publisher:
ISBN:
Category : Solid propellant rockets
Languages : en
Pages : 124
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Book Description
Author: Durwood I. Thrasher
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
This paper begins with a brief discussion of the basic ground rules and overall considerations in solid rocket motor design. This discussion includes ballistic design considerations, grain features related to ballistic design and their purposes, primary factors which determine stress and strain levels, and design approaches for avoiding structural weak points. The major section of the paper deals with solid rocket motor propellant grain structural integrity assurance, including materials characterization, structural analysis, and structural capability verification. The topics addressed include viscoelastic material behavior and the requisite thermomechanical characterization testing and analysis approaches; failure criteria and the appropriate testing approaches; experimental structural methods, including in-situ stress and strain measurement technology; and service life considerations.
Author: A. Davenas
Publisher: Newnes
ISBN: 0080984754
Category : Technology & Engineering
Languages : en
Pages : 623
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Book Description
This book, a translation of the French title Technologie des Propergols Solides, offers otherwise unavailable information on the subject of solid propellants and their use in rocket propulsion. The fundamentals of rocket propulsion are developed in chapter one and detailed descriptions of concepts are covered in the following chapters. Specific design methods and the theoretical physics underlying them are presented, and finally the industrial production of the propellant itself is explained. The material used in the book has been collected from different countries, as the development of this field has occurred separately due to the classified nature of the subject. Thus the reader not only has an overall picture of solid rocket propulsion technology but a comprehensive view of its different developmental permutations worldwide.
Author: Robert Melvin Evans
Publisher:
ISBN:
Category : Nickel alloys
Languages : en
Pages : 30
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Book Description
Because of a special interest in Alloy 718, the Defense Metals Information Center has summarized information on the welding and brazing of the alloy. Two principal resons for the interest in this alloy are its good formability and its good weldability, expecially under restraint. The greater portion of the fusion welding of Alloy 718 has been done by the gas tungsten-arc (TIG) process. A discussion of welding atmosphere, filler metals, heat treatment of welds, welding under restraint, and weld toughness is presented in the section on fusion welding. Information is also presented on resistance welding and electron-beam welding of Alloy 718. The final section of this report deals with the brazing of Alloy 718.
Author: J. E. Campbell
Publisher:
ISBN:
Category : Maraging steel
Languages : en
Pages : 136
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Book Description
Since the combination of tensile properties and toughness that can be obtained with the maraging steels is higher than can be achieved with other steels by simple heat treatments, there is considerable interest in using the maraging steels for critical components such as rocket motor cases, pressure vessels, and aircraft forgings. This report includes information on the tensile, compressive, shear, bearing, dynamic modulus, impact, bend, fatigue, creep, and rupture properties of the 18 per cent nickel maraging steels and on the effect of temperature on these properties. Data for the properties of sheet, bar, and forgings, as well as data illustrating the effect of cold rolling, variation in the heat treatment, and elevated-temperature exposure also are presented. Data on the effect of specimen orientation, which are also included, indicate that the ductility and toughness of specimens designed to evaluate the properties in the short transverse direction are somewhat lower than in the other directions. The high strength and toughness that can be obtained in the 18 per cent nickel maraging steels make them attractive for certain critical applications that require these properties. The fabrication characteristics, weldability, and simple heat treatment are other advantages of these steels. (Author).
Author: Albert G. Imgram
Publisher:
ISBN:
Category : Heat resistant alloys
Languages : en
Pages : 80
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Book Description
This report summarizes the present knowledge concerning the relationship among fabrication history, metallurgical structure, and the mechanical properites of the refractory metals columbium, tantalum, bolybdenum, and tungsten, and their alloys. These are the refractory metals currently reveiveing the most attention for aerospace applications, and are therefore the materials considered in this survey. The report is organized into three main sections, titled ''Fabrication'', ''Microstructure and Alloying'', and ''Interstitial Impurities''. The data presented were selected as those which best illustrate the topics discussed. Descriptions of the metaljurgical principles involved are included. Suggestions for optimizing mechanical properties by controlling metallurgical structure are made where possible. (Author).
Author: P. A. Kammer
Publisher:
ISBN:
Category : Martensitic stainless steel
Languages : en
Pages : 68
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Book Description
Recent studies of the developments in welding steels with yield strengths greater than 150 ksi have included low-alloy martensitic steels, medium-alloy martensitic steels, nickel maraging steels, and bainitic steels. Only weldments from medium-alloy martensitic steels and nickel maraging steels have mechanical properties approaching those of the base plate without a complete postweld heat treatment. The most serious problem with the other steel is low toughness in the weld fusion zone. Adequate weld metal toughness under conditions of elastic strain can be obtarined over the entire 150 to 225 ksi yield-strength range only if the tungsten-arc welding process is used. Processes with higher deposition rates can produce comparable weld deposits only in the lower portion of the range. Above a yield strength of 200 ksi, 18Ni maraging steel weldments have the best combination of strength and toughness. Below 200 ksi, the HP 9-4-25 medium-alloy martensitic steel and 12Ni maraging steel weldments have nearly equal properties.
