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  • PROPULSION SYSTEMS  (323)
  • STRUCTURAL MECHANICS  (323)
  • 1970-1974  (646)
  • 1960-1964
  • 1971  (646)
Collection
Keywords
Years
  • 1970-1974  (646)
  • 1960-1964
Year
  • 1
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    Design of Liquid Propellant Rocket Engines Second Edition (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Liquid propellant rocket engine conference proceedings and parameters for design of rocket engines and systems
    Keywords: PROPULSION SYSTEMS
    Type: NASA-SP-125
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    NASTRAN - A summary of the functions and capabilities of the NASA structural analysis computer system (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Description of general purpose digital computer program /NASTRAN/ for analysis of elastic structures under various loading conditions using finite element method approach
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-SP-260
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Buckling strength of structural plates (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: Designs for determining buckling strength of structural plates for spacecraft
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-SP-8068
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Testing methods and techniques: Strength of materials and components. A compilation (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: The methods, techniques, and devices used in testing the mechanical properties of various materials are presented. Although metals and metal alloys are featured prominently, some of the items describe tests on a variety of other materials, from concrete to plastics. Many of the tests described are modifications of standard testing procedures, intended either to adapt them to different materials and conditions, or to make them more rapid and accurate. In either case, the approaches presented can result in considerable cost savings and improved quality control. The compilation is presented in two sections. The first deals specifically with material strength testing; the second treats the special category of fracture and fatigue testing.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-SP-5944(01)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Solid Rocket Motor Performance Analysis and Prediction (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: Current design practices are reviewed and assessed, and guidance is established for achieving greater consistency in design, reliability in the end product, and efficiency in the design effort. The total problem is discussed, and design elements involved in successful design are identified. Design criteria are described, and the rule, guide, limitation, or standard which must be imposed on each essential design element is given. Recommended practices are presented for satisfying each of the criteria.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-SP-8039
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    A Stability Analysis of Cylindrical Panels Using a Finite Element Formulation (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: A cylindrical finite element suitable for the linear stability analysis of cylindrical shells is developed. Energy principles and variational methods lead to a problem formulation which lends itself to physical interpretations of the governing matrices of the finite element. By properly grouping the terms which result from taking the second variation of the potential energy of the element, it is possible to identify three distinct types of matrices. The first matrix is the conventional stiffness matrix; the second is an initial stress stiffness matrix; and the third is an initial displacement stiffness matrix. With the assumption of linearity, the buckling problem is stated in terms of the classical linear real eigenvalue equation. This problem formulation was programmed on the CDC 6600 series computer. The computer program is used to analyze the buckling of a variety of structures. Columns, arches, flat plates and curved panels with and without cutouts are considered.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-TM-X-69998
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Fundamental Mechanisms of Tensile Fracture in Aluminum Sheet Unidirectionally Reinforced with Boron Filament (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: Results are presented from an experimental research effort to gain a more complete understanding of the physics of tensile fracture in unidirectionally reinforced B-Al composite sheet. By varying the degree of filament degradation resulting from fabrication, composite specimens were produced which failed in tension by the cumulative mode, the noncumulative mode, or by any desired combination of the two modes. Radiographic and acoustic emission techniques were combined to identify and physically describe a previously unrecognized fundamental fracture mechanism which was responsible for the noncumulative mode. The tensile strength of the composite was found to be severely limited by the noncumulative mechanism which involved the initiation and sustenance of a chain reaction of filament fractures at a relatively low stress level followed by ductile fracture of the matrix. The minimum average filament stress required for initiation of the fracture mechanism was shown to be approximately 170 ksi, and appeared to be independent of filament diameter, number of filament layers, and the identity of the matrix alloy.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-TM-X-67577
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Mechanics of Fracture in Adhesive Joints (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: Interdependence of continuum mechanics and physical chemistry in failure analysis of adhesives
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-CR-121857 , UTEC-DO-71-155
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Advanced injector concepts investigation Final summary report (1971)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: Evaluation of throttling injector concepts applicable to advanced cryogenic engines
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-103183 , REPT-21052-3FS
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Installation and integration of transonic transport propulsion systems. (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-07-27
    Description: Initial work indicates that a viable aircraft family can be designed for higher subsonic cruise speeds. Studies to date suggest that the propulsion system/nacelle design and the incorporation of noise attenuation into this design will have more influence on the choice of an optimum engine than engine weight and fuel consumption. These studies also suggest the payoff resulting from the incorporation of new technology items such as the internal engine generator and new structural cowl concepts because of the greater sensitivity to drag. These factors, plus the greater interdependency of the transonic aircraft and its propulsion system, point up the importance of a total system approach to propulsion system optimization and design.
    Keywords: PROPULSION SYSTEMS
    Type: SAE PAPER 710762 , Society of Automotive Engineers, National Aeronautic and Space Engineering and Manufacturing Meeting; Sept. 28-30, 1971; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
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