Pulsed plasma thrusters (PPTs) are the simplest electric acceleration devices with solid propellant on satellites. In order to make their thrust performance higher and to feed propellant more effectively, we have been developing a new type PPT using powdered propellant. To estimate its thrust performance, we have made a test model thruster for comparing the thrust performances of PPTs with soli...

an internal ballistics model has been developed for performance prediction of a solid propellant rocket motor. inthis model a 1-d unsteady euler equation with source terms is considered. the flow is assumed as a non-reacting mixture of perfect gases with space and time varying thermo physical properties. the governing equations in the combustion chamber are solved numerically by using the stege...

Ionic liquid ferrofluids based on mixtures of [Emim][EtSO4] and [Bmim][NO3] fuels and hydroxylamonium nitrate oxidizer were synthesized by adding iron oxide nanoparticles. The resulting propellants were then tested for decomposition capability. Spot plate testing indicated that the temperature required to initiate rapid decomposition dropped from 115 o C to 75 o C with a 30% by weight addition ...

This review paper reports various concepts of the gun propulsion system to meet the goal of the futuristic hypervelocity projectiles. The nonconventional concepts, such as liquid gun propellant, rail gun, coil gun, electrothermal gun, electrothermal chemical gun along with conventional energetic solid gun propellant have been discussed. Even though muzzle velocity around 2000 m/s has been claim...

This paper describes the design of a power supply and actuation system appropriate for position or force controlled human-scale robots. The proposed approach utilizes a liquid monopropellant to generate hot gas, which is utilized to power a pneumatic-type actuation system. A prototype of the actuation system is described, and closed-loop tracking data are shown, which demonstrate good motion co...

In this paper, neural network (NN)-based models are generated to replace flamelet tables for subgrid modeling in large-eddy simulations of a single-injector liquid-propellant rocket engine. the ...


 An approach has been developed to the formation of a theoretical model movement gas- saturated liquid in flow path porous centrifugal pump, as an assembly system for feeding reaction mass liquid-propellant rocket engines. The is based on physical turbulent motion gas-liquid mixture, within which conservation equations are used. Two models proposed that describe mixture pump two-phase one...