Dear Sir/madam,

i have a seminar on special purpose subsystems in CMOS VLSI design.

So i need to explain ppt on the same topic. can you please help me on this, could u please upload ppts on special purpose sub systems.



Thanks a ton
Ramesh ....etc

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PROPULSION SUBSYSTEMS
INTRODUCTION
Spacecraft are provided with sets of propulsive devices so they can maintain three-axis stability, control spin, execute maneuvers, and make minor adjustments in trajectory. The more powerful devices are usually called engines, and they may provide a force of several hundred newtons. These may be used to provide the large torques necessary to maintain stability during a solid rocket motor burn, or they may be the only rockets used for orbit insertion.
Smaller devices, generating betwee ....etc

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ABSTRACT
An automotive propulsion concept is presented which
utilizes liquid nitrogen as the working fluid for an open
Rankine cycle. Ambient heat exchangers are used to power
an engine that is configured to maximize heat transfer during
the expansion stroke. If sufficient heat input during the
expansion process can be realized then this cryogenic
propulsive system would provide greater automotive ranges
and lower operating costs than those of electric vehicles
currently being considered for mass production.
The
feasibility of meeti ....etc

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Space travel has become a routine in the present world. Space is even a permanent settlement to some astronauts onboard the international Space Station. However, when you think of the size of our solar system, not to mention the universe, we have just taken baby steps into space. Conventional rocket propulsion is based on chemical propulsion systems. Now different methods have been evolved. This seminar will give an overview of some of the advanced propulsion methods like SOLAR THERMAL ROCKET PROPULSION, ELECTROSTATIC ION PROPULSION DRIVES, HAL ....etc

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Space travel has become a routine in the present world. Space is even a permanent settlement to some astronauts onboard the international Space Station. However, when you think of the size of our solar system, not to mention the universe, we have just taken baby steps into space. Conventional rocket propulsion is based on chemical propulsion systems. Now different methods have been evolved. This seminar will give an overview of some of the advanced propulsion methods like SOLAR THERMAL ROCKET PROPULSION, ELECTROSTATIC ION PROPULSION DRIVES, HAL ....etc

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ABSTRACT

The Magneto Hydro Dynamic (MHD) propulsion thruster is designed to use magneto hydrodynamic force generated by sending electric current through a magnetic field created in sea water by superconducting magnets. The principle of MHD propulsion is to apply the Fleming's left hand rule of electromagnetics to sea water directly .In this propulsion system magnetic field is created in sea water by magnets fixed on a hul1. When electric current is sent to sea water at right angles to the magnetic field, and electromagnetic force (Lorentz f ....etc

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AIR BREATHING PROPULSION
In contrast to a rocket engine which, in addition to the fuel, carries along an oxidizer, an air-breathing propulsion system uses atmospheric air to oxidize the liquid fuel. Air- breathing propulsion systems include the jet engine, the ramjet and the scramjet. The field of air-breathing propulsion involves various disciplines in science and engineering such as fluid dynamics, turbo machinery aerodynamics, thermodynamics, and materials and structures.


Propulsive device

genera ....etc

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Presented By:
Fredrik Roos and Jan Wikander



Abstract
In traditional methodologies for mechatronic design, the design processes of the mechanical structure, the electromechanical actuators and the control system, is more or less independent of each other. The mechanical structure is usually designed first, then fitted with off-the-shelf electric motors and drive electronics, and finally, a controller is designed for the already existing physical system. This approach leads to that many of the possible advantages of mechatronic ....etc

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Propulsion subsystems in a spacecraft aid in preserving the three-axis stability and the control spin. In addition to it, they also help in carrying out manoeuvres and to bring about slight alterations in trajectory. The superior ones called Ëœenginesâ„¢ can infact, generate an acceleration of large torques in volume to sustain the stability of a solid rocket motor during burning phase. The delta-V for simple tasks like the interplanetary trajectory correction manoeuvres, orbit trim manoeuvres, reaction wheel de-saturation manoeuvres and ....etc

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INTRODUCTION
Spacecraft propulsion is used to change the velocity of spacecraft and artificial satellites. There are many different methods. Each method has drawbacks and advantages, and spacecraft propulsion is an active area of research. Most spacecraft today are propelled by heating the reaction mass and allowing it to flow out the back of the vehicle.For propulsion the required product is the velocity of the exhaust products of the reaction. All current spacecraft use chemical rocket for launch.
....etc

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