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Comparative Analysis of Different Grain Configurations for a Multi-thruster Kinetic Warhead
N. Ananthkrishnan,Hyun Ko,K. Sreesankar,R. Chakravarty,V.S. Renganathan 한국추진공학회 2016 한국추진공학회 학술대회논문집 Vol.2016 No.5
The S-DACS multi-thruster warhead consists of 4 divert and 6 attitude thrusters fed from a common gas generator. Successful S-DACS intercept requires careful selection of the internal ballistics (grain configuration, chamber pressure, etc.), the sensors (seeker range, guidance law, etc.) as well as the external ballistics and sizing (booster diameter, S-DACS release velocity, flight time, maneuverability, etc.). These requirements and constraints are inter-dependent making the S-DACS mission analysis and sizing a difficult task. This work explores the connections between the choice of S-DACS grain configuration and sizing with the chamber pressure as a key parameter. Various parameters and center of gravity/ moment of inertia variations are compared for three different S-DACS grain configurations. Keywords: DACS, grain configuration, mission analysis
Propulsion System Modeling and Control of a Warhead with Multi-thruster Configuration
Rajtilok Chakravarty,Nachiket Wadwankar,N. Ananthkrishnan,V.S. Renganathan,Hyun Ko,Ji-Hyung Lee 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.12
A novel internal pressure controller is developed for a Kinetic Energy Interceptor (KEI) equipped with a multi-thruster configuration. To that end, first the propulsion system model for solid fuel with a tubular grain burning configuration is detailed. Subsequently the internal pressure control logic design and implementation is laid out and a closed loop simulation is successfully demonstrated where varying chamber pressure is demanded and met by the controller by varying the thruster throat areas appropriately.