Burn rate volume chamber

Low-frequency oscillation in a rocket motor depends on the pressure exponent of propellant burning rate and the free volume of the chamber. [ -7] when a double-base propellant composed of nc(0 510), ng( - 55), and dep(0.120), with pbsa(0.015) as a platonizing catalyst, bums in a strand burner, the burning rate characteristicsmay be divided into four zones, as shown in Fig. 13.14. The pressure exponent varies between the pressure zones n = 0.44 in zone I above 3.7 MPa, n= 1.1 in zone II between 3.7 MPa and 2.1 MPa, n = 0.77 in zone III between 2.1 MPa and 1.1 MPa, and n = 1.4 in zone IV below 1.1 MPa. 

Part 1, Source of Energy pp2-12 to 2-15 (Detn of pressure in a constant volume chamber) pA-9, Fig A-4 (Pressure vessel for measuring burning rates of propellants as a function of pressure) 70)A.M.Ball, Ordnance Corps Pamphlet ORDP 20-175 (1961),... 

In essence, primary chamber heat release criterion estabhshes primary chamber volume for a specific waste type and charging rate. Heat release values are simply determined by multiplying burning rate (pound per hour) by heating value (BTU per pound) and dividing by... 

Fluorocarbon binders such as polyvinylidene fluoride (PVDF) have been proposed as oxidizers in obscurant formulations [10]. For a formulation similar as the one shown below, the content of polyaromatic compounds in the soot has been determined. Six hundred grams of the payload were burned, and the generated aerosol was collected from the combustion chamber on a filter with a volume flow rate of 2 m h ... 

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