An Experimental Determination of Subatmospheric Burning Rates and Critical Diameters for AP/HTPB Propellant
Abstract
Measurements have been made of the burning rates of two formulations of AP/HTPB propellant in the pressure range of 0.3-1 atm. The experiments were performed in a windowed strand burner modified to operate under subatmospheric pressure conditions. Burning rates of the two formulations differ by almost a factor of two and the pressure dependence of both is well described by the usual power law function. Although 6.4 mm strands of the faster formulation burned stably down to 0.3 atm, it was found that the slower formulation strands would not burn stably even at 1 atm except in larger diameters. The critical diameter for self-extinguishment was found to increase with decreasing pressure. Propellant burning rate, Vacuum, Deflagration limit.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1988
- Accession Number
- ADA201109
Entities
People
- Hughes E. Holmes
- Martin S. Miller
Organizations
- Ballistic Research Laboratory