...Chaeyeon Baek; Hyunsung Jung; Junwon Heo; Kyuman Kim; Keun Ryu Modern turbomachinery demands simplified components and compact shaft support systems. This study introduces novel hydrostatic journal bearings incorporating multiple tilting pads and fluid feeding features, which are manufactured...

... on two hybrid journal bearings with a bearing length to bearing diameter ratio of approximately 0.42 and a bearing radial clearance to rotor radius ratio of around 0.0017. The bearings are tested with air, water, and liquid nitrogen, serving as surrogate test fluids for common propellants in liquid...

... and static stiffness characteristics even working with low-viscosity liquids. This work measures static load characteristics of hydrostatic journal bearings in air (25 °C), water (from 25 °C to 70 °C), and liquid nitrogen (−197 °C). Air, water, and liquid nitrogen are used as test fluids for the test bearing...

... frequency (rad/s) Γ = recess edge (m) Φ = flow function Ω = rotating speed (rad/s) Acronyms HJB = hybrid journal bearing I.D. = inner diameter (m) O.D. = outer diameter (m) The empirical orifice discharge coefficient C d is determined as described...