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Preliminary Metallographic Studies Of Ball Fatigue Under Rolling Contact Conditions
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Book Synopsis Preliminary Metallographic Studies of Ball Fatigue Under Rolling-contact Conditions by : H. Robert Bear
Download or read book Preliminary Metallographic Studies of Ball Fatigue Under Rolling-contact Conditions written by H. Robert Bear and published by . This book was released on 1957 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The metallurgical results produced on balls tested in the rolling-contact fatigue spin rig were studied by metallographic examination. Origin and progression of fatigue failures were observed. These evaluations were made on SAE 52100 and AISI M-1 balls fatigue tested at room temperature (80 F) and 200 to 250 F. Most failures originated subsurface in shear; inclusions, structure changes, and directionalism adversely affected ball fatigue life. Structures in the maximum-shear-stress region of the balls of both materials were stable at room temperature and unstable at 200 to 250 F. Failures were of the same type as those found in full-scale bearings.
Book Synopsis Technical Note by : United States. National Advisory Committee for Aeronautics
Download or read book Technical Note written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1957 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Note - National Advisory Committee for Aeronautics by : United States. National Advisory Committee for Aeronautics
Download or read book Technical Note - National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1958 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Propeller Location and Flap Deflection on the Aerodynamic Characteristics of a Wing-propeller Combination for Angles of Attack from 0 to 80 Degrees by : William A. Newsom
Download or read book Effect of Propeller Location and Flap Deflection on the Aerodynamic Characteristics of a Wing-propeller Combination for Angles of Attack from 0 to 80 Degrees written by William A. Newsom and published by . This book was released on 1957 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made to determine the effect of propeller location and flap deflection on the lift, drag, and pitching-moment characteristics of a wing-propeller combination over an angle-of-attack range from 0 to 80 degrees. The model had four propellers, the slipstream from which covered practically the entire span of the wing. The wing had a 30-percent-chord slotted flap and an 8.5-percent-chord slat. Data were obtained for flap deflections of 0, 20, 40, and 60 degrees with the slat off and on. For one propeller position the power input to the model was measured and tuft studies of the flow on the wing were made. The data are analyzed to assess the feasibility, from consideration of stability and control, of a tilting-wing vertical-take-off-and-landing airplane with the wing pivoted behind the primary wing structure to provide a desirable structural configuration. The main object of the investigation was to determine whether advantage might be taken of the forward shift of the center of gravity of the airplane, as the wing is tilted from an angle of attack of 90 to 0 degrees, to minimize the change in trim pitching moment throughout the transition speed range for such a configuration. The results indicate that with proper propeller position and programming of flap deflection, it is possible to design a configuration of this type in which essentially no change in trim is required throughout the transition from hovering to normal unstalled forward flight.
Book Synopsis Tension, Compression, and Fatigue Properties of Several SAE 52100 and Tool Steels Used for Ball Bearings by : G. Sachs
Download or read book Tension, Compression, and Fatigue Properties of Several SAE 52100 and Tool Steels Used for Ball Bearings written by G. Sachs and published by . This book was released on 1960 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1965 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index of NACA Technical Publications by : United States. National Advisory Committee for Aeronautics
Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1956 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Selected Listing of NASA Scientific and Technical Reports for ... by :
Download or read book A Selected Listing of NASA Scientific and Technical Reports for ... written by and published by . This book was released on 1954 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by and published by . This book was released on 1953 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report by : United States. National Advisory Committee for Aeronautics
Download or read book Annual Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1953 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report - National Advisory Committee for Aeronautics by : United States. National Advisory Committee for Aeronautics
Download or read book Annual Report - National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1957 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.
Book Synopsis Investigation of Some Mechanical Properties of Thermenol Compressor Blades by : Donald F. Johnson
Download or read book Investigation of Some Mechanical Properties of Thermenol Compressor Blades written by Donald F. Johnson and published by . This book was released on 1957 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparison in bending and torsional deflection tests showed thermenol to have a modulus of elasticity of about 26,000,000 and a modulus of rigidity of abot 9,000,000.
Book Synopsis Bibliography on the Fatigue of Materials, Components and Structures by : J. Y. Mann
Download or read book Bibliography on the Fatigue of Materials, Components and Structures written by J. Y. Mann and published by Elsevier. This book was released on 2013-10-22 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bibliography on the Fatigue of Materials, Components and Structures, Volume 2 is a list of references on the above subject spanning the years 1951-1960. The list of references is arranged chronologically according to the book's or paper's publication year. The Bibliography then lists the surname of the first author alphabetically in the respective year. When a paper gives no authors, it is listed at the end of the alphabetical listing of that year, in order of the publication date. The Bibliography also provides a subject and author index. The description that the volume uses is based on the titles of the paper or book. The text also lists the title in the original language of the paper, followed by an English translation. The volume contains more than 1,000 published materials from 30 countries. The topics these references cover are on the fundamental research made in the fatigue of materials; the determination of fatigue properties; the utilization of a different manufacturing methods; the various formulations to overcome occurrence of problems; and the development of design techniques. The style of numbering followed in this volume is a continuation of the numbering system used in Volume 1. The Bibliography can be used by physicists, scientists, and materials engineers to gain access to a wide variety of books, papers, and research on the above subject.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1960 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1957 with total page 1548 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Book Synopsis Qualitative Aspects of Fatigue of Materials by : Harold N. Cummings
Download or read book Qualitative Aspects of Fatigue of Materials written by Harold N. Cummings and published by . This book was released on 1959 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approximations for the Thermodynamic and Transport Properties of High-temperature Air by : C. Frederick Hansen
Download or read book Approximations for the Thermodynamic and Transport Properties of High-temperature Air written by C. Frederick Hansen and published by . This book was released on 1958 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thermodynamic and transport prorerties of high-temperature air are found in closed form starting from approximate partition functions for the major components in air and neglecting all minor components. The compressibility, energy, entropy, the specific heats, the speed of sound, the coefficients of viscosity and of thermal conductivity, and the Prandtl numbers for air are tabulated from 500 degrees to 15,000 degrees K over a range of pressure from 0.0001 to 100 atmospheres. The enthalpy of air and the mol fractions of the major components of air can easily be found from the tabulated values for compressibility and energy. It is predicted that the Prandtl number for fully ionized air will become small compared to unity, the order of 0.01, and this implies that boundary layers in such flow will be very transparent to heat flux.
