Experimental study of pump and seal characteristics of helical groove geometry incorporated in a combined bearing and pump
Pump and seal parameters for helical groove, hermetically sealed pump and bearing rotor
Johnson, R. L.↗
Engineering topics
Ludwig, L. P.
Publications and source records attributed to Ludwig, L. P..
Shaft face seal with self-acting lift augmentation for advanced gas turbine engines.
Gas turbine engine shaft face seal with self acting lift augmentation preventing rubbing contact, noting disadvantages of labyrinth and conventional seals
Johnson, R. L.↗
Shaft face seal with self-acting lift augmentation for advanced gas turbine engines
Shaft face seal with self acting lift augmentation for advanced gas turbine engines
Johnson, R. L.↗
Vibration of shaft face seals and stabilizing effect of viscous and friction damping
Vibration of shaft face seals and stabilizing effect of viscous and friction damping
Hudelson, J. C.↗
Performance and Analysis of Seals for Inerted Lubrication Systems of Turbine Engines
Performance and analysis of seals for nitrogen inerted lubrication systems of turbine engines
Johnson, R. L.↗
Spiral-grooved shaft seals substantially reduce leakage and wear
Rotating shaft seals used in space power systems have spiral grooves in one or both of the opposing seal faces. These grooves induce a pumping action which displaces the intervening fluid radially inward toward the shaft and counters the centrifugal forces which tend to displace the fluid outward.
Allen, G. P.↗
Friction and wear in cryogenic liquids for composites of phenolic and of polytetrafluoroethylene of various particle sizes and concentrations
Friction and wear in cryogenic liquids for phenolic and polytetrafluoroethylene composites of various particle sizes and concentrations
Johnson, R. L.↗
Performance and analysis of seals for inerted lubrication systems of turbine engines.
Nitrogen inerted lubrication system incorporating ball bearing and seals in simulated turbine engine sump
Johnson, R. L.↗
Performance and analysis of seals for inerted lubrication systems of turbine engines
Performance evaluation of nitrogen inerted lubrication system with contact seals for ball bearing of turbine engines
Johnson, R. L.↗
Bearing and seal technology
NASA derived improvements in seals and bearings for utilization by electric power industry
Anderson, W. J.↗
Spiral groove face seal concepts, comparison to conventional face contact seals in sealing liquid sodium /400 deg to 1000 deg F/
Spiral groove face seals for improved sealing of liquid sodium flow
Allen, G. P.↗
Spiral groove face seal concepts - comparison to conventional face contact seals in sealing liquid sodium /400 to 1000 deg F/.
Conventional face contact seal performance improved by incorporating spiral groove geometry, discussing liquid sodium containment
Allen, G. P.↗
Convective inertia and gas ingestion effects on flow regimes of the viscoseal theory and experiment.
Viscoseal operation in superlaminar flow regime noting pressure patterns, end effect, gas ingestion and sealing capacity
Johnson, R. L.↗
Improving performance of face contact seal in liquid sodium /400 deg to 1000 deg F/ by incorporation of spiral-groove geometry
Improved performance of face contact seal in liquid sodium by incorporation of spiral groove geometry
LIQUID SODIUM↗
Convective inertia and gas ingestion effects on flow regimes of the viscoseal - Theory and experiment.
Viscoseal operation in superlaminar flow regime noting pressure patterns, end effect, gas ingestion and sealing capacity
TURBULENT FLOW↗
Screw-seal performance in vacuum environment
Lubricant leakage rate through noncontact slinger pump and screw seal assembly to simulated space vacuum environment
VACUUM CHAMBER↗
Performance of inerted lubrication systems for turbine engines
Performance of inerted lubrication system for high temperature turbine engines
Johnson, R. L.↗