WorldCat Identities

Coe, Harold H.

Overview
Works: 31 works in 80 publications in 1 language and 1,765 library holdings
Roles: Author
Classifications: TL521.3,
Publication Timeline
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Most widely held works by Harold H Coe
Comparison of predicted and measured temperatures of UH-60A helicopter transmission by Harold H Coe( Book )

3 editions published in 1989 in English and held by 179 WorldCat member libraries worldwide

Effect of interference fits on roller-bearing fatigue life by Harold H Coe( Book )

2 editions published in 1986 in English and held by 157 WorldCat member libraries worldwide

Lubrication and performance of high-speed rolling-element bearings by Erwin V Zaretsky( Book )

2 editions published in 1985 in English and held by 147 WorldCat member libraries worldwide

Effect of speed and press fit on fatigue life of roller-bearing inner-race contact by Harold H Coe( Book )

3 editions published in 1985 in English and held by 87 WorldCat member libraries worldwide

Maximum life spiral bevel reduction design by Michael Savage( Book )

1 edition published in 1992 in English and held by 86 WorldCat member libraries worldwide

Optimization is applied to the design of a spiral bevel gear reduction for maximum life at a given size. A modified feasible directions search algorithm permits a wide variety of inequality constraints and exact design requirements to be met with low sensitivity to initial values. Gear tooth bending strength and minimum contact ratio under load are included in the active constraints. The optimal design of the spiral bevel gear reduction includes the selection of bearing and shaft proportions in addition to gear mesh parameters. System life is maximized subject to a fixed back-cone distance of the spiral bevel gear set for a specified speed ratio, shaft angle, input torque and power. Significant parameters in the design are: the spiral angle, the pressure angle, the numbers of teeth on the pinion and gear and the location and size of the four support bearings. Interpolated polynomials expand the discrete bearing properties and proportions into continuous variables for gradient optimization. After finding the continuous optimum, a designer can analyze near optimal designs for comparison and selection. Design examples show the influence of the bearing lives on the gear parameters in the optimal configurations. For a fixed back-cone distance, optimal designs with larger shaft angles have larger service lives
Spur-gear optimization using SPUROPT computer program by Harold H Coe( Book )

4 editions published in 1991 in English and held by 86 WorldCat member libraries worldwide

SPUROPT, a computer program developed for optimizing spur gear designs, was updated by installing a new subroutine that uses AGMA 908-B89 standards to calculate the J-factor for determining tooth-bending stress. The updated SPUROPT program was then used to optimize a spur gear set for either maximum fatigue life, minimum dynamic load, or minimum weight. All calculations were made with constraints on as many as 13 parameters by using three design variables: the number of teeth, diametral pitch, and tooth-face width. Results depended largely on constraint values. When the limiting bending stress was set at a high value, the optimal solution was the highest allowable number of teeth. When the allowable bending stress was lowered, the optimal solution moved toward the fewest number of teeth permitted. Final results were also affected by the amount of transmission error. A lower error permitted a higher number of teeth
Bending strength model for internal spur gear teeth by Michael Savage( Book )

3 editions published in 1995 in English and held by 81 WorldCat member libraries worldwide

Internal spur gear teeth are normally stronger than pinion teeth of the same pitch and face width since external teeth are smaller at the base. However, ring gears which are narrower, have an unequal addendum or are made of a material with a lower strength than that of the meshing pinion may be loaded more critically in bending. In this study, a model for the bending strength of an internal gear tooth as a function of the applied load pressure angle is presented which is based on the inscribed Lewis constant strength parabolic beam. The bending model includes a stress concentration factor and an axial compression term which are extensions or the model for an external gear tooth. The geometry of the Lewis factor determination is presented, the iteration to determine the factor is described and the bending strength J factor is compared to that of an external gear tooth. This strength model will assist optimal design efforts for unequal addendum gears and gears of mixed materials. (AN)
Effect of hoop stress on ball bearing life prediction by Erwin V Zaretsky( Book )

1 edition published in 1995 in English and held by 78 WorldCat member libraries worldwide

Predicted and experimental performance of jet-lubricated 120-millimeter-bore ball bearings operating to 2.5 million DN by Harold H Coe( Book )

5 editions published in 1978 in English and held by 77 WorldCat member libraries worldwide

Bearing inner- and outer-race temperatures and friction power losses were calculated using two computer programs. The values obtained were compared with previously reported experimental data for 120 mm bore bearings which operated at thrust loads to 22 240 N (5000 lb), shaft speeds to 20 800 rpm, and with two lubricant flow rates. One program severely underestimated the power loss, while the other, called SHABERTH, provided a good prediction of both race temperatures and power losses
Testing of UH-60A helicopter transmission in NASA Lewis 2240-kW (3000-hp) facility by Andrew M Mitchell( Book )

4 editions published in 1986 in English and held by 77 WorldCat member libraries worldwide

Computer-aided design analysis of 57-mm, angular-contact, cryogenic turbopump bearings by Elizabeth S Armstrong( Book )

3 editions published in 1988 in English and held by 76 WorldCat member libraries worldwide

Thermal analysis of a planetary transmission with spherical roller bearings operating after complete loss of oil by Harold H Coe( Book )

2 editions published in 1984 in English and held by 63 WorldCat member libraries worldwide

Comparison of predicted and experimental performance of large-bore roller bearing operation to 3.0 million DN by Harold H Coe( Book )

5 editions published in 1980 in English and held by 62 WorldCat member libraries worldwide

Performance of 75-millimeter-bore bearings using electron-beam-welded hollow balls with a diameter ratio of 1.26 by Harold H Coe( Book )

3 editions published in 1975 in English and held by 17 WorldCat member libraries worldwide

Summary of thermophysical properties of potassium by Harold H Coe( Book )

3 editions published in 1965 in English and held by 16 WorldCat member libraries worldwide

Steady-state performance of a modified Rankine cycle system using water by David B Fenn( Book )

3 editions published in 1966 in English and held by 15 WorldCat member libraries worldwide

Experimental performance of 75-millimeter-bore arched outer-race ball bearings to 2.1 million DN by Harold H Coe( Book )

3 editions published in 1976 in English and held by 14 WorldCat member libraries worldwide

Steady-state performance of a seven-tube NaK-cooled potassium condenser by David B Fenn( Book )

3 editions published in 1967 in English and held by 12 WorldCat member libraries worldwide

Cooling requirements of ball bearings lubricated by glass-fiber-filled polytetrafluoroethylene retainers in cold hydrogen gas by Harold H Coe( Book )

4 editions published in 1970 in English and held by 6 WorldCat member libraries worldwide

Experiments were performed with 40-mm-bore ball bearings operating at shaft speeds to 35 000 rpm and thrust loads to 400 lbs (1780 N) in 60 deg R (33 K) hydrogen gas. The minimum coolant flow rate equation developed for bearings equipped with this retainer material was similar to the equation determined in a previous study for bearings with a bronze-filled polytetrafluoroethylene (PTFE) retainer. Retainer wear rate was very low; some inner-race ball-track wear was evident for bearings that had been run for more than 7 hours
Performance of 75-millimeter-bore bearings to 1.8 million DN with electron-beam-welded hollow balls by Harold H Coe( Book )

3 editions published in 1970 in English and held by 6 WorldCat member libraries worldwide

Fatigue performance of hollow and solid ball bearings
 
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Languages
English (60)