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Energy

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Displaying 176 - 200 of 237

Thermal Decomposition Kinetics of Kerosene-based Rocket Propellants. 2. RP-2 with Three Additives

September 9, 2009

Author(s)

Jason A. Widegren, Thomas J. Bruno

The thermal decomposition of RP-2 with three potential stabilizing additives was investigated. The additives were 1,2,3,4-tetrahydroquinoline (THQ), 1,2,3,4-tetrahydronaphthalene (tetralin) and the additive package that is used to make JP-8+100 (herein

Thermophysical Properties Measurements of Rocket Propellants RP-1 and RP-2

September 1, 2009

Author(s)

Stephanie L. Outcalt, Arno R. Laesecke, Karin Brumback

The density, speed of sound, and viscosity of two rocket propellants (RP-1 and RP-2) have been measured. The combined range of the data is from 270 K to 470 K with pressures to 40 MPa. The estimated uncertainty of the density data is 0.1 % and that of the

Composition-Explicit Distillation Curves for Mixtures of Diesel Fuel with Dimethyl Carbonate and Diethyl Carbonate

July 14, 2009

Author(s)

Thomas J. Bruno, Arron Wolk, Alexander Naydich, Marcia L. Huber

We have recently introduced several important improvements in the measurement of distillation curves of complex fluids. The modifications to the classical measurement provide for (1) a composition explicit data channel for each distillate fraction (for

A Comparison of the Hypersonic Vehicle Fuel JP-7 to the Rocket Propellants RP-1 and RP-2 Using the Advanced Distillation Curve Method

June 15, 2009

Author(s)

Tara Lovestead, Thomas J. Bruno

JP-7 is a hydrocarbon-based kerosene fraction with a low volatility and high thermal stability. JP-7 was developed in the 1950s to meet the more stringent requirements necessary for the development of high-altitude reconnaissance planes that fly at speeds

Preliminary Surrogate Mixture Models for the Thermophysical Properties of Rocket Propellants RP-1 and RP-2

May 19, 2009

Author(s)

Marcia L. Huber, Eric W. Lemmon, Lisa S. Ott, Thomas J. Bruno

We developed surrogate mixture models to represent the thermophysical properties of a two kerosene rocket propellants, RP-1 and RP-2. The surrogates were developed with a procedure that incorporated experimental data for the density, sound speed, viscosity

Composition-Explicit Distillation Curves for Mixtures of Gasoline with Four-Carbon Alcohols (Butanols)

March 9, 2009

Author(s)

Thomas J. Bruno, Arron Wolk, Alexander Naydich

Interest in the domestic production of bio-derived fuels, sparked by the high cost of petroleum crude oil, has lead to consideration of fluids to replace or extend conventional petroleum derived fuels. While ethanol as a gasoline extender has received a

Density and Speed of Sound Measurements of Jet A and S-8 Aviation Turbine Fuels

January 27, 2009

Author(s)

Stephanie L. Outcalt, Arno R. Laesecke, Malte B. Freund

The density and speed of sound were measured for three compositions of aviation jet fuel A, and a synthetic fuel (S-8) derived from the Fischer-Tropsch process. Measurements of density and speed of sound were carried out at ambient pressure (83 kPa) with a

Variability of The Rocket Propellants RP-1, RP-2, and TS-5: Application of a Composition- and Enthalpy-Explicit Distillation Curve Method

December 3, 2008

Author(s)

Lisa S. Ott, Amelia B. Hadler, Thomas J. Bruno

We have recently introduced several important improvements in the measurement of distillation curves for complex fluids. This method is a significant improvement over current approaches, featuring a composition-explicit data channel for each distillate

Thermal Decomposition of RP-1, RP-2, and Mixtures of RP-2 With Stabilizing Additives

November 3, 2008

Author(s)

Jason A. Widegren, Thomas J. Bruno

----- FOR POLICY REVIEW ONLY ----- The thermal decomposition of RP-1, RP-2, and mixtures of RP-2 with three different additives has been investigated. The mixtures with RP-2 contained 5% 1,2,3,4-tetrahydronaphthalene (tetralin), 5% 1,2,3,4

Multichannel Decomposition and Isomerization of Octyl Radicals

October 9, 2008

Author(s)

Wing Tsang, William S. McGivern, Jeffrey A. Manion

The thermal cracking patterns from the decomposition and isomerization of octyl-1 radicals have been determined from the pyrolysis of n-octyl iodide in single pulse shock tube experiments at temperatures in the 850-1000 K range and pressures near 2 bar

Findings and Recommendations from the Joint NIST/AFRL Workshop on Rocket Propellants and Hypersonic Vehicle Fuels

September 25, 2008

Author(s)

Thomas J. Bruno, Matt Billingsley, Ron Bates

The Joint NIST/AFRL Workshop on Rocket Propellants and Hypersonic Vehicle Fuels was held on September 25 and 26, 2008 at the Boulder, Colorado laboratories of NIST. The workshop included oral presentations from staff* of NIST, AFRL, CPIAC, NASA, Stanford

Isomerization and Decomposition Reactions in the Pyrolysis of Branched Hydrocarbons: 4-Methyl-1-Pentyl Radical

July 31, 2008

Author(s)

William S. McGivern, Iftikhar A. Awan, Wing Tsang, Jeffrey A. Manion

The kinetics of the decomposition of 4-methyl-1-pentyl radicals have been studied from 927 1068 K at pressures of 1.78 2.44 bar using a single pulse shock tube with product analysis. The reactant radicals were formed from the thermal C I bond fission of 1

Application of a Composition-Explicit Distillation Curve Metrology to Mixtures of Jet-A and S-8

February 19, 2008

Author(s)

Thomas J. Bruno, Beverly L. Smith

We have recently introduced several important improvements in the measurement of distillation curves for complex fluids. The modifications to the classical measurement provide for (1) temperature and volume measurements of low uncertainty, (2) temperature