21. EPPDyL- Princeton University Electric Propulsion And Plasma Dynamics Laboratory Research in electric propulsion, plasma thrusters and fundamental problems in plasma physics. Princeton University. http://alfven.princeton.edu/

22. NASA - Warp Drive, When? propulsion Physics (BPP) Project to return to conducting research, offers this assessment of the prospects for achieving the propulsion http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

23. Thiokol Propulsion Home Page Makes solid propulsion motors for space, defense, tactical. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

24. Cassini-Huygens Home Jet propulsion Laboratory. + View the NASA Portal. Search Cassini. JPL Home JPL Home Page Earth JPL Home Page - Solar System JPL Home Page - Stars http://saturn.jpl.nasa.gov/home/index.cfm

@import url( "../cassini-l2.css" ); + View the NASA Portal Highlights: The Vision for Space Exploration Saturn Observation Campaign Cassini K-4 Literacy ... Sign Up for JPL News Cassini Radar Images Show Dramatic Shoreline on Titan Images returned during Cassini's recent flyby of Titan show captivating evidence of what appears to be a large shoreline cutting across the smoggy moon's southern hemisphere. Hints that this area was once wet, or currently has liquid present, are evident. + Read Story + See Flyby Page + Image Details + More on Titan Ghostly Spokes in Saturn's Rings Spotted by Cassini Scientists are celebrating the first Cassini spacecraft sighting of spokes, the ghostly radial markings discovered in Saturn¿s rings by NASA's Voyager spacecraft 25 years ago. A sequence of images taken on the side of the rings not illuminated by the sun has captured a few faint, narrow spokes in the outer B ring, about 3,500 kilometers long and about 100 kilometers wide (2,200 miles by 60 miles). + Image Details Vortex Variety The latitude bands and swirling storms of Saturn, always intriguing to scientists, often are exquisitely beautiful as well. The turbulent atmosphere is dotted with storms; most are small, but some are much larger. The dark center of the dramatic beauty swirling near the south pole is easily 2,000 kilometers (1,250 miles) across.

25. Air Force Research Laboratory - Propulsion Directorate Information on their research projects, and a propulsion primer. http://www.pr.afrl.af.mil/

Welcome to the Propulsion Directorate home page. This page uses frames, and your browser doesn't! Here's a link to our non-frame pages

26. Corporate Training And Performance Workshops For Executives. Corporate training and performance workshops for executives. http://www.jetparker.com

Who is Jet Parker? Parker is also the founder of CEO IQ her book, ABCs for CEOs Each of the 26 chapters of the book is dedicated to one vital Advantage Business Competency that executives should apply to build financially vibrant enterprises. Her love of history resulted in a special twist in nearly every chapter: a brief story about Quanah Parker (the last chief of the Comanche) depicting his innate ability to adeptly apply each competency as leader of his powerful, passionate people. For booking availability and rate information contact CEO IQ at (214) 752-3647, toll free at (888) 826-6789 or by email at speakers@ceoiq.com

27. Definition Of Propulsion definition of propulsion http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

28. California Institute Of Technology California Institute of Technology http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

29. SPS Portal Page Space propulsion using patented technologies for commercial and military launch vehicles, satellites, and spacecraft using advanced manufacturing processes. http://www.sps.aero

30. Chemical Propulsion Information Agency Comprehensive site with technical resources, propulsion papers, meetings and events calendar. http://www.cpia.jhu.edu/

PROPULSION NEWS HEADLINES NASA Awards Launch Services Contract To Orbital Sciences (9-16-05) Senate Approves $16.4 Billion for NASA (9-15-05) International Team Tests New Upper-Stage Rocket Engine (9-15-05) BMD Focus: Asians Embrace BMD (9-14-05) ... White House Formally Nominates Dale for NASA's Number Two Job (9-14-05) New At CPIAC September 2005 CPIAC Bulletin Released Propulsion Research Engineer / Scientist Position Available (U.S. citizens only) CPIAC Site Contents About CPIAC Products Services Propulsion News ... Customer Eligibility Online content developers are strictly prohibited from providing links to this website without prior authorization from the Johns Hopkins University, Chemical Propulsion Information Analysis Center.

31. Pratt Whitney Leader in the design, manufacture, and support of turbine engines. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

32. Home Page Developer of lowcost small satellite launch vehicles and sounding/target rockets. http://rocketprop.com

Rocket Pr opulsion (RP) Engineering Company Rocket Engine and Jet Engine Testing Services Propulsion Systems Engineering Liquid Rocket Engine Design Engine Testing Services What's New Contact RP Night test of J85 Jet Engine at the RP Mojave Engine Test Facility Overhead view of section of the Mojave test site showing J79 source jet engine (bottom center) feeding test ducting. Exhaust exit center-left feeds test engine (not installed). Tanks in view supply water, liquid oxygen and liquid air under pressure. Instrumentation bay at center right. Far right at edge of photograph: One of two high-pressure 21 paks (21,000 SCF) that supply pressurized N2 gas to pressure-feed test liquids. August 2003 by Rocket Propulsion Engineering Company. Problems with this web page contact RP webmaster

33. NASA - Marshall Space Flight Center Marshall is the world leader in space propulsion and transportation systems. The Center is also making significant contributions to the International http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

34. Chemical Propulsion Information Agency News about important people in the chemical propulsion industry. .more. Careers In propulsion. As a service to the propulsion community, CPIA will post http://www.cpia.jhu.edu/inpropulsion/

Search Online PIRS: Advanced Search SERVICES PRODUCTS Meetings/Symposia ... HOME PROPULSION NEWS Headlines Access the latest news headlines pertaining to the propulsion industry. All of the latest news stories in one convenient location. NASA Awards Launch Services Contract To Orbital Sciences (9-16-05). Senate Approves $16.4 Billion for NASA (9-15-05). International Team Tests New Upper-Stage Rocket Engine (9-15-05). BMD Focus: Asians Embrace BMD (9-14-05). ... White House Formally Nominates Dale for NASA's Number Two Job (9-14-05). People News about important people in the chemical propulsion industry. .:more:. Careers In Propulsion As a service to the propulsion community, CPIA will post advertisements for available propulsion-related jobs for a period of one month free of charge. If your company has an opening that you would like to advertise, please contact Rosemary Dodds at (410) 992-1905, Ext. 219, or by email to rdodds@cpia.jhu.edu for further details. If you are seeking employment and interested in an advertised position, please contact the company that is advertising the available position. .:more:. Special Features CPIA publishes independently authored technical articles and reports on propulsion and propulsion related topics.

35. PROPULSION : The Official Site Your browser is really too old, please upgrade http://www.propulsion.org/

36. Free Energy Propulsion Magnetic System A proposed theory on how to challenge Newton's Third law of motion and make a free energy propulsion system. http://magnetic.propulsion.mysite.wanadoo-members.co.uk/

37. Rocket Propulsion An overview of rocket propulsion including basic thrust equation, engine design considerations, and example problems. http://www.braeunig.us/space/propuls.htm

ROCKET PROPULSION Introduction Thrust Conservation of Momentum Specific Impulse ... Staging Isaac Newton stated in his third law of motion that "for every action there is an equal and opposite reaction." It is upon this principle that a rocket operates. Propellants are combined in a combustion chamber where they chemically react to form hot gases which are then accelerated and ejected at high velocity through a nozzle, thereby imparting momentum to the engine. The thrust force of a rocket motor is the reaction experienced by the motor structure due to ejection of the high velocity matter. This is the same phenomenon which pushes a garden hose backward as water flows from the nozzle, or makes a gun recoil when fired. Thrust Thrust is the force that propels a rocket or spacecraft and is measured in pounds, kilograms or Newtons. Physically speaking, it is the result of pressure which is exerted on the wall of the combustion chamber. The figure to the right shows a combustion chamber with an opening, the nozzle, through which gas can escape. The pressure distribution within the chamber is asymmetric; that is, inside the chamber the pressure varies little, but near the nozzle it decreases somewhat. The force due to gas pressure on the bottom of the chamber is not compensated for from the outside. The resultant force F due to the internal and external pressure difference, the thrust, is opposite to the direction of the gas jet. It pushes the chamber upwards.

38. Space Exploration Technology: Space Exploration And Nuclear Propulsion Discusses the scientific aspects of nuclear propulsion in space. Includes technical concepts, technology basics with schematic diagrams, history and topical http://www.astrodigital.org/space/nuclear.html

Nuclear Propulsion Getting More Miles Per Gallon By Blair P. Bromley Contents Introduction Space Mission Analysis Limitations of Chemical Rocket Engines The Advantage of Nuclear Propulsion Systems Sample Calculations for a Mars Mission What Progress Has Been Made in Space Nuclear Power and Propulsion? Conclusions References Table 1: Types of Propulsion Systems Table 2: Mars Mission Comparison - Round Trip Figure 1: Mass Ratio Dependence on Mission Delta-V and Specific Impulse Figure 2: Schematic Diagram of a Solid Nuclear Thermal Rocket (NTR) Engine Introduction For those who are interested in the exploration and development of space by humans, nuclear propulsion technology is a very attractive option. Why? Compared with the best chemical rockets, nuclear propulsion systems (NPS's) are more reliable and flexible for long-distance missions, and can achieve a desired space mission at a lower cost. The reason for these advantages in a nutshell is that NPS's can get "more miles per gallon" than a chemical rockets. If NPS's were analogous to a 1998 Honda Civic, then your best chemical rocket would be a gas-guzzler from the 1950's. Space Mission Analysis For any space mission, there are a few basic questions that must be answered:

39. Catalog Page For PIA00114 A color image of the Earth obtained by Galileo on December 11, 1990, South America is near the center of the picture, and the white, sunlit continent of Antarctica is below. http://photojournal.jpl.nasa.gov/catalog/PIA00114

Select an Image Gallery Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies Spacecraft and Telescopes Universe Technology History People and Facilities PIA00114: Earth - South America (first frame of Earth Spin Movie) Target Name: Earth Is a satellite of: Sol (our sun) Mission: Galileo Spacecraft: Galileo Orbiter Instrument: Solid-State Imaging Product Size: 800 samples x 800 lines Produced By: JPL Producer ID: Addition Date: Primary Data Set: Galileo EDRs Full-Res TIFF: PIA00114.tif (760.1 kB) Full-Res JPEG: PIA00114.jpg (50.21 kB) Click on the image to download a moderately sized image in JPEG format (possibly reduced in size from original). Original Caption Released with Image: This color image of the Earth was obtained by Galileo at about 6:10 a.m. Pacific Standard Time on Dec. 11, 1990, when the spacecraft was about 1.3 million miles from the planet during the first of two Earth flybys on its way to Jupiter. The color composite used images taken through the red, green and violet filters. South America is near the center of the picture, and the white, sunlit continent of Antarctica is below. Picturesque weather fronts are visible in the South Atlantic, lower right. This is the first frame of the Galileo Earth spin movie, a 500- frame time-lapse motion picture showing a 25-hour period of Earth's rotation and atmospheric dynamics.

40. Fact Sheet - Xenon Ion Propulsion of Boeing s commercial XIPS (Xenon Ion propulsion System). Designed for satellites, but a specialized version of it was used on NASA s Deep...... http://www.boeing.com/defense-space/space/bss/factsheets/xips/xips.html

In October 2000, The Boeing Company acquired three units within Hughes Electronics Corporation: Hughes Space and Communications Company, Hughes Electron Dynamics, and Spectrolab, Inc., in addition to Hughes Electronics' interest in HRL, the company's primary research laboratory. The four are now part of Boeing's newest subsidiary, Boeing Satellite Systems, Inc. Boeing 601HP Thruster: 13 centimeters in diameter 2568 seconds ISP 18 mN of thrust Boeing 702 Thruster: 25 centimeters in diameter 3800 seconds ISP 165 mN of thrust XIPS: The Latest Thrust in Propulsion Technology With the delivery of the PAS-5 satellite to PanAmSat Corporation in 1997, Hughes Space and Communications Company launched a new era in satellite propulsion technology. PAS-5 is the world's first commercial satellite to carry a revolutionary propulsion system which is 10 times more efficient than the systems currently in use: xenon ion propulsion. By the third quarter of 2000, 11 on-orbit satellites were using XIPS. The xenon ion propulsion system, or XIPS (pronounced "zips"), is the culmination of nearly four decades of research into the use of electric propulsion as an alternative to conventional chemical propulsion. Available on the

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