Results 51 to 60 of about 3,835 (218)
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Journal of Applied Fluid Mechanics, 2020 The objective of present theoretical analysis is to study the combined influence of surface roughness and lubricant inertia on the steady performance of stepped circular hydrostatic thrust bearings lubricated with non-Newtonian Rabinowitsch type fluids ...
U. P. Singh
doaj
Performance of gas-lubricated cruciform-mounted tilting-pad journal bearings and a damped flexibly mounted spiral-groove thrust bearing [PDF]
A test program was conducted to determine the performance characteristics of gas-lubricated cruciform-mounted tilting-pad journal bearings and a damped spiral-groove thrust bearing designed for the Brayton cycle rotating unit (BRU).
Ream, L. W.
core +2 more sources
Turbulent Shear Flow in Hydrostatic Thrust Bearings
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1980 This paper is concerned with the effects of a turbulent flow in hydrostatic thrust bearings. Applying an equation representing the "low of wall" to the three-dimensional turbulent shear flow, the local velocity distributions between a rotating disk and a fixed wall are calculated as a function of Reynolds number, local pressure gradient and the ratio ...
Masami HARADA +3 more
openaire +2 more sources
Biomechanics and Evolution of the Primate Tongue
Evolutionary Anthropology: Issues, News, and Reviews, Volume 35, Issue 2, June 2026.ABSTRACT Primate tongue morphology and function are critical to understanding the evolution of feeding, swallowing, and vocalization. In this paper, we examine the primate tongue as a muscular hydrostat with regionally specialized neuromuscular compartments. We integrate anatomical, kinematic, and biomechanical modeling approaches to analyze how muscle
Yeganeh Sekhavati +2 more
wiley +1 more source
High Performance Turboalternator and Associated Hardware. 1 - Design of Turboalternator [PDF]
Performance of two stage axial flow turbogenerator with gas bearing rotor support ...
Cohen, R., Gilroy, W. K., Spencer, W. B.
core +1 more source
Comparison of Power and Thrust Performance for a Fixed and Floating Offshore Wind Turbine
Wind Energy, Volume 29, Issue 6, June 2026.ABSTRACT Floating offshore wind turbines have been identified as a critical technology for sustainable electricity generation. Wind resource assessment is used to determine optimal locations for floating wind farms. However, current methodologies do not account for performance differences between fixed and floating turbines due to wind‐ and wave ...
Jackson P. Hardin +3 more
wiley +1 more source
Terrestrial Analogs to Titan for Geophysical Research
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon +21 more
wiley +1 more source
Effects of vibration and shock on the performance of gas-bearing space-power Brayton cycle turbomachinery. Part 4: Suppression of rotor-bearing system vibrations through flexible bearing support damping [PDF]
A bearing damper, operating on the support flexure of a pivoted pad in a tilting-pad type gas-lubricated journal bearing, has been designed, built, and tested under externally-applied random vibrations. The NASA Brayton Rotating Unit (BRU), a 36,000 rpm,
Badgley, R. H. +2 more
core +1 more source
, 1991 About four years ago, work was completed on a 36 inch diameter gas to gas carbon ring seal used to buffer low pressure turbine air at the rim of the forward outer flowpath on the GE36 unducted fan (UDF) engine.
Pope, A. Nelson
core +1 more source