Dual-thrust motor

Fig. 14.13 Cross-section of an internal-burning propellant grain used in a dual-thrust motor.

Fig. 14.17 Pressure versus burning time curve for a dual-grain dual-thrust motor.

Q4 MPa s When a negative catalyst such as LiF or SrCOj was added to the AP composite propellant, combustion interruption occurred. As shown in Fig. 7.27, the pressure deflagration limit is lowered by the addition of the negative catalysts. Detailed design work of a dual-grain dual-thrust motor and the associated combustion test results are shown in Ref [5]. 

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