| A Microscopic Study of the Friction Process. |
FEB 1970 |
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| Authors:
C. D. Stuber; AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH
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| MEASUREMENTS OF TURBULENT HEAT TRANSFER AND SKIN FRICTION REDUCTION ON A POROUS CONE WITH AIR INJECTION AT HIGH MACH NUMBERS |
22 DEC 1964 |
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| Authors:
R. P. Fogaroli; GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV
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 | Measurements of turbulent heat transfer and skin friction reduction on a large slender porous cone were obtained at cone Mach numbers of 5.3 and 8.1 using air as the injected coolant. The test model had a 7.5 degree half-angle and a 12 inch base diameter. The test extended the available published data to very high mass injection rates and confirmed that the heat transfer reduction due to mass injection is ... |
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| NON-NEWTONIAN PIPE FRICTION STUDIES WITH VARIOUS DILUTE POLYMER WATER SOLUTIONS. |
JUN 1964 |
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| Authors:
John F. Ripken; Meir Pilch; MINNESOTA UNIV MINNEAPOLIS ST ANTHONY FALLS HYDRAULIC LAB
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| The study extends existing data on the frictional drag reducing influence of long-chain polymers in dilute water solutions. Studies were conducted with both fresh and sea water in capillary tubes and pipes with a size range of 100 diameters and covering the laminar, transition, and turbulent regimes with N'(Re) up to 800,000. Fifteen types of test additives were used, including Polyhall, Polyox, Westco Guar, and fish slime. Test temperatures ranged ... |
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| LOW FRICTION MATERIALS FOR UNLUBRICATED PLAIN BEARINGS IN ULTRA HIGH VACUUM, |
MAR 1964 |
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| Authors:
A. B. Osborn; ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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| Chosen pairs of materials were tested in a bearing assembly comprising a vertical shaft, held by a pair of journal bearings, with its lower, pointed end supported on a flat plate. Tested shafts were of stainless steel, 'Silver steel', pure iron, molybdenum and tungsten carbide. Bearings and plate were of stainless steel, graphite, graphite and molybdenum disulphide, copper, silver, and tungsten carbide. The bearing assemblies were baked under vacuum for ... |
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| THE EFFECT OF FRICTION ON OPTIMUM TWO-DIMENSIONAL WINGS IN LINEARIZED SUPERSONIC FLOW, |
AUG 1963 |
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| Authors:
Angelo Miele; Robert E. Pritchard; BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH
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| The problem of minimizing the zero-lift drag of two-dimensional wings in supersonic flow is con sidered including the effect of friction. It is assumed that the distribution of pressure coeffi cients is that which results from the linearized theory, that the friction coefficient is con stant, that the chord of the airfoil is free, and tat any number of conditions is imposed on the thickness, the enclosed area, the moment ... |
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