For the post acceleration of radioactive ions produced at ISOL facilities the increase of the charge state is essential to fulfill the A/q requirements of the accelerators. Many of those existing or proposed facilities are relying on the performance of charge state boosters of EBIS or ECRIS type. Although, in principle both types of sources can be used in pulsed or continuous mode operation an ...

Motivation Registers are weak [FLP85, LAA87].

K e y w o r d s J e t t i s o n i n g system, Retro-rocket, Jet damping, Pyro, Relative velocity, Relative distance, Launch vehicle. N O M E N C L A T U R E Az launch azimuth (deg) h altitude of separation (km) I inertia tensor (kg-m 2) t Time (s) mM, ms mass of the ongoing and spent bodies (kg) RE, Rp, Rs Earth's equatorial radius, polar radius, radius at the surface (km) r, q, p body angular ...

A numerical dynamic-aerodynamic interface for simulating the separation dy­n­a­m­ic­s of co­n­­s­t­r­a­i­ned strap-on boosters jettisoned in the atmosphere is presented. A 6-DOF multi body dynamic solver ،using Constraint For­ce Equation Methodology is coupled with a numerical time dependent Euler flow solver. An automatic dyna­m­i­­c mesh updating proc­e­d­ure is employed using smoothing and l...

The rocket is the only vehicle that launches the spacecraft in the space. The orientation of the spacecraft in precise position is so crucial. But, the motion of the rocket can be influenced by internal and external disturbances. Furthermore, the rocket is a multi-input and multi-output nonlinear system whose dynamics are unstable and poorly understood. Hence, attitude control of the rocket is ...

concern regarding the ef%ciency, stability and safety margins of hi-propellant combustion in rocket engines has prompted the investigation of nlany specific aspects of spray evaporation, ignition and combustion previoudy not studied. Thus, early s!,ucties of combustion in liquid rocket engines were based upon the results of the classsid single-component, isolated drop combustion at atmospheric ...

This article reviews and summarizes recent work on flow-structural interaction in solid motors. This interaction is important because it can lead to rocket motor failure. In the first part of the document, an idealized model of the failure mechanism is developed to illustrate in simple terms how such an event can occur. In the second part of this article recently published numerical modeling wo...

Nuclear fission has been used as a reliable source for utility power in the United States for decades. Even in the 1940’s, long before the United States had a viable space program, the theoretical benefits of nuclear power as applied to space travel were being explored [Humble, et. al.]. These benefits include long-life operation and high performance, particularly in the form of vehicle power d...