Viscosity Measurements of Rocket Propellant RP-2 Over Wide Ranges of Temperature and Pressure

2020 ◽  
Vol 65 (6) ◽  
pp. 3221-3229
Author(s):  
Hseen O. Baled ◽  
Robert M. Enick ◽  
Rajendar R. Mallepally ◽  
Babatunde A. Bamgbade ◽  
Mark A. McHugh ◽  
...  
Keyword(s):  
Rocket Propellant ◽  
Viscosity Measurements ◽  
Temperature And Pressure

scholarly journals Fragility and the Dynamic Crossover in Lubricants

2007 ◽  
Author(s):  
Scott Bair ◽  
C. M. Roland ◽  
R. Casalini
Keyword(s):  
Glass Transition ◽  
Elastohydrodynamic Lubrication ◽  
Viscosity Measurements ◽  
Glass Forming ◽  
Volume Model ◽  
Free Volume Model ◽  
The Subject ◽  
Temperature And Pressure ◽  
First Time ◽  
Dynamic Crossover

The property of fragility in glass forming liquids is introduced to elastohydrodynamic lubrication (EHL). Using viscosity measurements for two liquids that have been the subject of traction studies, the fragility of liquids is shown to be important to EHL traction and the property that most influences the representative (Eyring) stress. The derivative Stickel analysis is then carried out for lubricants. Using viscosity measurements, the dynamic crossover is detected for the first time in lubricants. The viscosity at the crossover is either constant or varies slowly with temperature and pressure and the crossover pressure varies with temperature in a manner similar to the glass transition pressure. The free volume model fails to predict the occurrence of the dynamic crossover.

scholarly journals Fragility and the dynamic crossover in lubricants

2007 ◽  
Vol 221 (7) ◽  
pp. 801-811 ◽  
Author(s):  
S Bair ◽  
C. M. Roland ◽  
R Casalini
Keyword(s):  
Glass Transition ◽  
Elastohydrodynamic Lubrication ◽  
Viscosity Measurements ◽  
Glass Forming ◽  
Volume Model ◽  
Free Volume Model ◽  
The Subject ◽  
Temperature And Pressure ◽  
First Time ◽  
Dynamic Crossover

The property of fragility in glass forming liquids is introduced to elastohydrodynamic lubrication (EHL). Using viscosity measurements for three liquids that have been the subject of traction studies the fragility of liquids is shown to be important to EHL traction and the property that most influences the representative (Eyring) stress. The derivative Stickel analysis is then carried out for lubricants. Using viscosity measurements, the dynamic crossover is detected for the first time in lubricants. The viscosity at the crossover is either constant or varies slowly with temperature and pressure and the crossover pressure varies with temperature in a manner similar to the glass transition pressure. The free-volume model fails to predict the occurrence of the dynamic crossover.

Wide-Ranging Viscosity Measurements of Rocket Propellant RP-2

2013 ◽  
Vol 29 (6) ◽  
pp. 1323-1327 ◽  
Author(s):  
Arno Laesecke ◽  
Dylan S. Cousins
Keyword(s):  
Rocket Propellant ◽  
Viscosity Measurements

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

Viscosity measurements on metal melts at high pressure and viscosity calculations for the earth's core

2004 ◽  
Vol 174 (7) ◽  
pp. 727 ◽  
Author(s):  
Vladimir N. Mineev ◽  
Aleksandr I. Funtikov
Keyword(s):  
High Pressure ◽  
Earth’S Core ◽  
Earth's Core ◽  
Viscosity Measurements ◽  
Metal Melts

Notes on Temperature and Pressure Controls

1952 ◽  
Vol 8 (1) ◽  
pp. 74-77
Author(s):  
F.G. Cross
Keyword(s):  
Temperature And Pressure
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