GAP-B Pyrolants

The temperature of the boron particles is raised by the heat generated by the decomposition of GAP. However, no combustion reaction occurs between the boron particles and the gaseous decomposition products of the GAP pyrolant. Thus, the temperature in the gas generator remains low enough to protect the attached nozzle from adverse heat 

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Table 15.5 Theoretical and experimental combustion temperatures of GAP and GAP-B pyrolants.

Fig.15.11 Specific impulse of a GAP-B gas-generating pyrolant as a function of air-to-fuel ratio.

The highest flame temperature for a B-GAP pyrolant is obtained at b( 0.2), whereupon BN is produced, while that for an Al-GAP pyrolant is obtained at ai( 0.4), whereupon AIN is produced. Al reacts with N2 generated by the decom-... 

Data for the combustion temperature in a gas generator are shown in Table 15.5. The GAP pyrolant without boron particles, b(0-0), burns incompletely. The... 

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