Average burning rate

The fuels consumed in the fire were treated wood, penta, and creosote (coal tars). Both are considered combustible liquids, with flash points above 160° F (CC). Vapor conditions within the headspaces of tanks can, however, reach explosive conditions, and the introduction of an ignition source resulted in spontaneous combustion. Under ideal conditions, creosote burns similar to crude oil, and in standard lab burn tests, has an average burn rate of 4 mm/min. There is no data on the burn rate of penta however, its vapors would have likely burned at much slower rates and a series of complex chemical transformations would have occurred. 

Turbulent convective burning of vertical plate. An approximate solution matched to data was given by Ahmad and Faeth [11]. The average burning rate mp for a distance x measured from the start of the plate is given by the formula below ... 

Thus, it is found that the time-average burning rate can be represented by... 

Experimentally, average burning rates have been measured using thin wire thermocouples imbedded in the sample at the mid-point and at the three-quarter... 

Experimental observation indicates that the AP particles within the matrix of a double-base (DB) propellant appear to burn and regress in size spherically on the burning surface. Thus, the regression rate of the particles appears to depend on their instantaneous diameter. The average burning rate of each AP particle is determined as a function of pressure, as shown in Fig. 8.3. The burning rate is represented by r p = where Kj is independent of pressure, r p is the burning rate... 

Following are average burning-rate constants for typical rocket proplnts... 

The average burning rate for the proplnt during these oscillations is always higher than expected. This phenomenon of unstable burning is known as resonance burning [See under Burning, Unstable (in Rocket Motors)]... 

AUSTROGEL G1= commercial explosives (Austria) 23 average burning rate 23 azides 12 23 196 286 345 azoture d ammonium 12 azoture d argent 286 azoture de plomb 196 azotures 12 23 196 286 345... 

The arithmetic mean (statistical average) burning rate of pyrotechnic or propellants at specific pressures and temperatures. Dimension -length/time or mass/time. 

Relative comparison of average burning rate, average time of burning and average extent of burning. 

Average Burning Rate, Tungsten Micron Size secs/inch... 

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