Download or read book Ball Motion and Sliding Friction in an Arched Outer race Ball Bearing written by Bernard J. Hamrock and published by . This book was released on 1974 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 1976 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arched outer race Ball bearing Analysis Considering Centrifugal Forces written by Bernard J. Hamrock and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A first-order thrust load analysis that considers centrifugal forces but which neglects gyroscopics, elastohydrodynamics, and thermal effects was performed. The analysis was applied to a 150-mm-bore angular-contact ball bearing. Fatigue life, contact loads, and contact angles are shown for conventional and arched bearings. The results indicate that an arched bearing is highly desirable for high-speed applications. In particular, at an applied load of 4448 n (1000 lb) and a DN value of 3 million (20,000 rpm) the arched bearing shows an improvement in life of 306 percent over that of a conventional bearing.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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 1974 with total page 1446 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
Download or read book The Indian and Eastern Engineer written by and published by . This book was released on 1926 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Machinist written by and published by . This book was released on 1914 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Apparatus for Studying Ball Spinning Friction written by Steven T. Miller and published by . This book was released on 1965 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental apparatus was designed and constructed at the NASA Lewis Research Center to study one aspect of spinning friction based on interfacial slip over the entire ball-race contact area. The apparatus is capable of measuring spinning moments of less than 0. Ol inch-pound at maximum Hertz contact stresses to over 400 000 psi, speeds to 3500 rpm, and under varying contact configurations and conditions. From the torque measurement, a coefficient of spinning friction can be calculated. The apparatus comprises a drive assembly, a dead-weight load assembly, a spherical upper test specimen, a cylindrically grooved lower test specimen of varying conformity, a lower test specimen housing assembly incorporating a hydrostatic air-bearing assembly, and a torque-measuring system. In operation, the upper test specimen is loaded against the lower test specimen through the drive shaft assembly by the dead- weight load assembly. As the drive assembly is rotated, the upper test specimen rotates against the stationary lower test specimen actuating the torque-measuring system. Preliminary tests were conducted under varying Hertz stress to 136 000-psi maximum Hertz stress at a spinning speed of 950 rpm, with a 51 percent ball-groove conformity using a polyphenyl ether (5P4E), a highly purified naphthenic mineral oil, and a di-2-ethylhexyl sebacate (MIL-7808). It was found that the coefficient of spinning friction decreased with increasing maximum Hertz stress to an intermediate stress level and had a minimum value of 0. 122, 0. 089, and 0. 050, respectively, for the lubricants listed previously.
Download or read book Electrical World written by and published by . This book was released on 1914 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mechanical Engineer written by William Henry Fowler and published by . This book was released on 1914 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wisconsin Engineer written by and published by . This book was released on 1921 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Wisconsin Engineer written by and published by . This book was released on 1921 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FUNDAMENTALS OF MACHINE DRAWING written by SADHU SINGH and published by PHI Learning Pvt. Ltd.. This book was released on 2012-11-18 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This richly illustrated textbook, now in its Second Edition, continues to provide a solid fundamental treatment of the essential concepts of machine drawing. The book is suitable for students pursuing courses in mechanical engineering (and its related branches) both at the undergraduate degree and diploma levels. The students are first introduced to the standards and conventions of basic engineering drawing. The machine elements such as fasteners, bearings, couplings, shafts and pulleys, pipes and pipe joints are discussed in depth before moving on to detailed drawings of components of steam engines, IC engines, boilers, and machine tools. Gears are covered in a separate chapter. Finally, the book introduces the students to the principles of computer-aided drafting and designing (CADD) to prepare them to use software tools effectively for the production of computerised accurate drawings. This Second Edition includes three new chapters, namely Fits and Tolerances, Assembly Drawings, and Freehand Sketching, anda revamped chapter on Gears. Besides,all the earlier chapters have been revised and enlarged with numerous new topics and worked-out examples. Key Features Provides first and third angle projections Follows the standards set by the Bureau of Indian Standards as per IS:696–1972/SP:46–1988 Contains multiple-choice questions and practice exercises
Download or read book Opticalman 3 2 written by United States. Bureau of Naval Personnel and published by . This book was released on 1970 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theories and practical skills for use in optical shops are presented in this rate training manual, prepared for regular navy and naval reserve personnel. Light theories are analyzed in connection with mirrors, prisms, lenses, and basic optical systems. Following fundamentals of mechanical design and construction, maintenance procedures are studied to give a general knowledge of optical repair. Special descriptions are made of such instruments as spyglasses, telescopes, magnetic compasses, azimuth and bearing circles, sextants, stadimeters, telescopic alidades, binoculars, submarine periscopes, and night vision sights. To give enough background for readers, operations of lathes, grinders, milling machines, and drill presses are also discussed. Besides illustrations for explanation purposes, information on the opticalman rating structure is also provided.
Download or read book Paper written by and published by . This book was released on 1976 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Centrifugal Pumps written by Igor Karassik and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 991 pages. Available in PDF, EPUB and Kindle. Book excerpt: This last, the education of pump users, is precisely what this book was intended to do. To what extent we must have achieved our purpose, our readers must decide. My good friend and associate, J. T. (Terry) McGuire, and I have been working very closely together for a long time. Our view of engineering problems and of their solutions coincide to an astonishing degree. When I was asked to prepare a second edition of my book Centrifugal Pumps, it was logical that I turned to Terry and suggested that he be my coauthor on this project. He agreed to do so, and his cooperation has been most valuable, both in improving the resultant work and in easing my burden. It would be presumptuous on my part to pretend that nothing has changed in the technology of centrifugal pumps during the 30 years since I prepared the manuscript for the first edition of this book. Let me, then, speak of some of these changes.
Download or read book South African Automotive Light Vehicle Level 2 written by CDX Automotive and published by Jones & Bartlett Learning. This book was released on 2013-03-28 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt:
