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Displaying 176 - 196 of 196

Sooting Behavior of Ethanol Droplet Combustion at Elevated Pressures Under Microgravity Conditions

September 1, 2004
Author(s)
B D. Urban, K Kroenlein, A Kazakov, F L. Dryer, A Yozgatligil, M Y. Choi, Samuel Manzello, K O. Lee, R Dobashi
Liquid ethanol is widely used in practical fuels as a means to extend petroleum-derived resources or as a fuel additive to reduce emissions of carbon monoxide from spark ignition engines. Recent research has also suggested that ethanol and other oxygenates

Fire Performance of Partition Assemblies

July 7, 2004
Author(s)
Samuel L. Manzello, Richard G. Gann, S R. Kukuck, Kuldeep R. Prasad, Walter W. Jones
For nearly a century, the cornerstone of fire safety in buildings has been the ability to confine a fire for a time sufficient for people to reach safety and for successful fire suppression activity. To effect this, the partitions in a building (walls

Urban/Widlland Fires: Ignition by Embers

July 7, 2004
Author(s)
Samuel L. Manzello, Thomas G. Cleary, Jiann C. Yang
Urban-wildland fires have plagued the United States for centuries. Embers are produced as trees and other objects burn in urban-wildland fires. These embers are entrained in the atmosphere and may be carried by winds over long distances. Hot embers

On the Interaction of a Liquid Droplet with a Pool of Hot Cooking Oil

November 1, 2003
Author(s)
Samuel L. Manzello, Jiann C. Yang, Thomas G. Cleary
An experimental study is presented for distilled water droplets impacting on a heated pool of cooking oil. The impaction process was recorded using a high-speed digital camera at 1000 frames per second. The initial droplet diameter was fixed at 3.1+0.1 mm

Collision Dynamics of A Liquid Fire Suppressant Upon A Heated Wax Surface

July 18, 2003
Author(s)
Samuel L. Manzello, Jiann C. Yang
The impact of a distilled water droplet upon a heated wax surface was investigated experimentally using a high-speed digital camera at 1000 frames/s. Two different droplet impact Weber numbers (We) were considered and the collision dynamics were

Measurement of the Optical Extinction Coefficients of Post-Flame Soot in the Infrared

July 1, 2003
Author(s)
J F. Widmann, Jiann C. Yang, Samuel L. Manzello, George W. Mulholland
The optical extinction coefficients of post-flame soot have been measured in the wavelength range 2.8 micrometers to 4.1 micrometers. A laminar diffusion burner was combined with an infrared spectrograph and gravimetric measurements to determine the mass

Cold Discharge of CF 3 I in a Simulated Aircraft Engine Nacelle

June 1, 2003
Author(s)
Jiann C. Yang, Samuel L. Manzello, Marc R. Nyden, M D. Connaghan
An aircraft engine nacelle simulator was built to study the dispersion behavior of CF3I, a potential halon 1301 (CF3Br) replacement, at an extremely cold temperature (nominally 40 C). The experimental fixture consists of a simulated engine nacelle with

Discharge of CF3I in a Cold Simulated Aircraft Engine Nacelle (NIST SP 984)

June 1, 2002
Author(s)
Jiann C. Yang, Samuel L. Manzello, Marc R. Nyden, M D. Connaghan
An aircraft engine nacelle refers to the region between the engine body and its casing. Fuel and hydraulic lines, pumps, and lubrication systems are located within the nacelle. Air is vented through the nacelle to prevent any build-up of combustible vapors

Discharge of CF3I in a Cold Simulated Aircraft Engine Nacelle

April 30, 2002
Author(s)
Jiann C. Yang, Samuel L. Manzello, Marc R. Nyden, M D. Connaghan
An aircraft engine nacelle refers to the region between the engine body and its casing. Fuel and hydraulic lines, pumps, and lubrication systems are located within the nacelle. Air is vented through the nacelle to prevent any build-up of combustible vapors

Experimental Study of a Water Droplet Impinging on a Liquid Surface

January 1, 2002
Author(s)
Samuel L. Manzello, Jiann C. Yang
An experimental study is presented for water droplet impingement on a liquid surface. The impaction process was recorded using a high-speed digital camera at 1000 frames per second. The initial droplet diameter was fixed at 3.1 mm 0.1 mm and all

Cold Discharge of CF3I in a Simulated Aircraft Engine Nacelle

January 1, 2001
Author(s)
Jiann C. Yang, Marc R. Nyden, Samuel L. Manzello
One of the potential candidates for halon 1301 replacement in aircraft engine nacelle and dry bay fire protection applications and fuel tank ullage inerting is trifluoroiodomethane (CF3I). Before CF3I can be considered as a potential drop-in replacement
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