Jahn physics of electric propulsion pdf merge

Spacecraft powered by typical electric propulsion systems may eject propellant at up to 20 times the speed of conventional chemical systems, delivering a much higher specific impulse, or the amount of thrust obtained for the weight of fuel burned. Analysis showed that a major portion of reboost of space station can be made using electric propulsion systems with 0. The subsequent pages within the electric propulsion section contain specific information and technologies pertaining to the differing subsets of electric propulsion systems. Nuclear electric propulsion pdf nuclear electric propulsion pdf download. Electric and hybridelectric propulsion systems springerlink. Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Electric propulsion systems for ships topics yoshifumi ajioka kiyoshi ohno increasing use of electric propulsion systems on ships as is the case with general automobiles that are driven on land, the main type of engine used on ships is the internal combustion engine motors such as diesel engines and gas turbines.

Robert george jahn april 1, 1930 november 15, 2017 was an american plasma physicist, professor of aerospace science, and dean of engineering at princeton university. Future trends of electrical propulsion and implications to. Use features like bookmarks, note taking and highlighting while reading physics of electric propulsion dover books on physics. American institute of aeronautics and astronautics 12700 sunrise valley drive, suite 200 reston, va 201915807 703. Electric propulsion enables many missions that satisfy the strategic goals of jpl and nasa to explore our solar system, to detect other earths in neighboring planetary systems, and to search for. Plasmas for spacecraft propulsion institute of physics. Electric propulsion development covers the proceedings of the second electric propulsion conference of the american rocker society, held in berkeley, california on march 1416, 1962. Design considerations and experiences of first flight dr paul robertson. Jahn was also a founder of the princeton engineering anomalies research lab pear, a parapsychology research program which ran from 1979 to 2007. Modeling the physics of plasma thruster plumes in electric propulsion m. Jahn, professor of aerospace sciences at princeton university, starts his presentation with primary physical. Pdf due to the advantages of electric motors and electric batteries, the electric propulsion systems are widely used in uavs 1,2.

Welcome to the propulsion systems analysis branch at nasa glenn research center in cleveland, ohio. Electric propulsion an analysis of current propulsion. Jahn, professor of aerospace sciences at princeton university, starts his presentation with primary physical principles and concludes with realistic space thruster designs. Nasa breakthrough propulsion physics program marc g. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and hall thrusters.

Here, the main focus is to present the early days of electrodeless magnetoplasma thrusters research and development for future missions with plasma engines. Deep space propulsion systems university of thessaly. Electrically powered spacecraft propulsion wikipedia. The aim is not to 1 author to whom any correspondence should be addressed. Jennings department of engineering, electrical engineering division. Therefore, we have developed an advanced electric propulsion diagnostic aepd platform, which allows a comprehensive insitu characterization of electric propulsion thrusters or ion beam sources and could serve as a standard onground tool in the future.

I hope it will let you share the enthusiasm of the engineers who wrote the stories. A more systematic and detailed version of this process is john andersons horizon mission methodology 6. Integrated electric propulsion iep or full electric propulsion fep or integrated full electric propulsion ifep is an arrangement of marine propulsion systems such that gas turbines or diesel generators or both generate threephase electricity which is then used to power electric motors turning either propellers or waterjet impellors. Electrothermal propulsion, wherein the propellant is heated by some electrical process, then expanded through a suitable nozzle 2. An efficient aircraft requires a careful matching of motor, propeller, and airframe a matching that is. Advanced propulsion systems beyond rocket science an overview august 27, 2012 orange county computer society. Focus is on hybrid electric propulsion control technologies related to alternative propulsion systems to further improve efficiency and emissions up until the present no nasa propulsion controls effort has been focused on hybrid electric propulsion new nasa hybrid electric propulsion controls technology effort to start in fy17. Propulsion power sources chemical rocket 160m hp nuclear. Propulsion for small electric aircraft this section describes a few of the basic considerations needed to estimate the performance of small electric aircraft propulsion systems. Electromagnetic, electrothermal, and electrostatic thrusters rely upon the supply of electric power for propulsion. The asteroid redirect robotic mission is a candidate solar electric propulsion technology demonstration mission whose main objectives are to develop and demonstrate a highpower solar electric propulsion capability for the gency and return an a asteroidal mass for rendezvous and characterization in a companion humancrewed mission.

Ion and hall thrusters march 2008 the research described in this publication was carried out at the jet propulsion laboratory, california institute of technology, under a contract with the national aeronautics and space administration. Stateoftheart deep space propulsion 1 soa ion thrusters 2 ion thruster physics 3 effects of longlifetime operation iii. Propulsion for small electric aircraft stanford university. Jpl spacecraft built for nasa have explored every known planet except pluto, and a few have looked out into the universe beyond our local planets. The conference focuses on the existing problems in electric propulsion and their possible solutions. Skip to main content accessibility help we use cookies to distinguish you from other users and to provide you with a better experience on our websites. Planning, evaluation and comparison of electric drive systems using various configurations to increase energy efficiency and optimize alternating current drive systems imece2015 related chapters. Find all the books, read about the author, and more. Modeling the physics of plasma thruster plumes in electric. Draft 61500 the four phases of the project this electrodynamic propulsion design challenge moves through four distinct phases, in about twelve sessions assuming that each session is a 45minute period. While in conventional icebased vehicles the energy carrier is a fossil fuel, electric and hybridelectric propulsion systems are characterized by the presence of an electrochemical or electrostatic energy storage system. Pdf electric propulsion research and development at jpl.

Geared toward advanced undergraduates and graduate students, this text systematically develops the concepts of electrical acceleration of gases for propulsion. Nextstep research opportunities lay at the intersection between the issues evoked by the propulsion ideas and unresolved problems in contemporary physics. Future trends of electrical propulsion and implications to ship design h. Lecture notes marine power and propulsion mechanical. Over the last 10 years the electrical propulsion fleet grew three times faster than the world fleet.

Micropropulsion somewhat more practical propulsion concept currently under evaluation. Electric propulsion is a good example of space technology. Pisacane as part of requirements for 744 space systems i course at jhu, whiting school of engineering. Rocket propulsion basics 1 propulsion, an energy conversion process 2 mustang vs. Millis lewis research center, cleveland, ohio prepared for the second symposium on realistic nearterm advanced scientific space missions cosponsored by the international academy of astronautics and politecnico di torino aosta, italy, june 29july 1,1998 national aeronautics and space. A form of electric space propulsion in which ions are accelerated by an electrostatic field to produce a highspeed typically about 30 kms exhaust. This brochure will give you many examples of how it works on a spacecraft, and what challenges it overcomes. Physics of electric propulsion dover books on physics. Geared toward advanced undergraduates and graduate students, this text systematically develops the. An electricallypowered spacecraft propulsion system uses electrical, and possibly also magnetic fields, to change the velocity of a spacecraft. Nuclear electric propulsion nep powered system for longduration space. An ion engine has a high specific impulse making it very fuelefficient but a very low thrust. Extremely high temperature of an insulated gas stream or.

Since swimming is so inefficient due to the resistance of the water, it is advantageous to increase the power per stroke instead of trying to maximize the number of strokes. Pestana head of ship design, abb marine, billingstad, norway this abstract. To further maximize this propulsion force, the fingers should be together so that the surface area on the levers is maximized and the most water is pulled. Electric propulsion systems describe a wide variety of differing mechanics to propel a spacecraft. These were already described in 1968 by jahn jahn 2006.

Moreover, at least one electric motor is responsible. Nasas primary application of ion propulsion will be for main propulsion on long missions that are difficult or impossible to perform using other types of propulsion. The four phases are outlined below and are roughly correlated to. Physics of electric propulsion dover books on physics by robert g. Merino, 20170126 ep2 research group new capabilities. Nep for artificial gravity hope missions to callisto. Electric propulsion 127 historically, conceptually, and pragmatically, this. Reference herein to any specific commercial product, process, or service. Feep field emission electric propulsion ion thrusters high electric field near needle tip style electrodes provide enough force to ionize propellant n thrust, isp 800 5000 s same ion optics concept as standard ion thrusters developed in europe. Advanced propulsion systems beyond rocket science, an. Physics of electric propulsion dover books on physics and millions of other books are available for amazon kindle.

Progress in astronautics and aeronautics, volume 9. Jahn, 1968 for v e above 10,000 ms, a propulsion system needs. This produces savings that can be passed along to consumers. A seminar report on electric propulsion slideshare. Read unlimited books and audiobooks on the web, ipad, iphone and android.