Externally pressurized gas bearing — partially grooved surface (design chart)
Dimensionless pressure ratio, load, stiffness and load-change (at ε=0.5) design formula for an externally pressurized gas bearing with a partially grooved feed surface.
Pressure ratio, β₀0.6882472016116852
Dimensionless load, F* (ε=0)0.7941236008058425
Dimensionless stiffness, S* (ε=0.5)0.19699505119476912
Load change, dF* (ε=0.5)12.40329912087155 %
Closed-form design-chart formula (no numerical integration, no login lock). All inputs and outputs are dimensionless ratios, so there is no SI unit scaling to verify. Companion calculator to aerostatic-external-pressure-shallow-pocket (same legacy page, independent solver).
Method & references
- Externally pressurized (aerostatic) gas thrust bearing, partially grooved feed surface — dimensionless design chart.
The computation is a literal port of the original client-side JavaScript from /calculators/e14_1.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.