41. Propulsion Science And Technology, Inc. propulsion Science and Technology, Inc. is a small research and development company specializing in the modeling and analysis of rocket plume flowfields and http://propulsionscience.com/

42. Space Nuclear Power / Nuclear Thermal Propulsion Federation of American Scientists review of the topic. http://www.fas.org/nuke/space/

FAS Homepage Nuclear Resources Search Join FAS SPACE NUCLEAR POWER / NUCLEAR THERMAL PROPULSION Safety Framework for Nuclear Power Source Applications in Outer Space , International Atomic Energy Agency, August 2009 Space Nuclear Power: Opening the Final Frontier by Gary L. Bennett, June 2006 (AIAA-2006-4191, presented at the 4th IECEC) Nuclear Safety Criteria and Specifications for Space Nuclear Reactors , OSNP-1, August 1982 Safety Status of Space Radioisotope and Reactor Power Sources by Gary L. Bennett, 1990 Safety Aspects of Thermoelectrics in Space by Gary L. Bennett, 1995 Conduct and Results of the Interagency Nuclear Safety Review Panel's Evaluation of the Ulysses Space Mission by Joseph A. Sholtis, et al, 1991 Potential Health Risks from Postulated Accidents Involving the Pu-238 RTG on the Ulysses Solar Exploration Mission by Marvin Goldman, et al, 1991 Mission of Daring: The General-Purpose Heat Source Radioisotope Thermoelectric Generator by Gary L. Bennett and James J. Lombardo, et al, June 2006 (AIAA-2006-4096, presented at the 4th IECEC) The Timber Wind Special Access Program , Department of Defense Inspector General Audit Report No. 93-033, December 16, 1992

43. Spacecraft Propulsion: Definition From Answers.com rocket propulsion ( ′r kət pro′pəlshən ) ( aerospace engineering ) Reaction propulsion by a rocket http://www.answers.com/topic/spacecraft-propulsion

44. What Are The Types Of Rocket Propulsion? What are the types of rocket propulsion? There are several types of rocket propulsion systems http://www.qrg.northwestern.edu/projects/vss/docs/Propulsion/2-what-are-the-type

Propulsion How does propulsion work? What are the types of rocket propulsion? There are several types of rocket propulsion systems: Type Uses Advantages Disadvantages Solid fuel chemical propulsion main booster simple, reliable, few moving parts, lots of thrust not restartable Liquid fuel chemical propulsion main booster, small control restartable, controllable, lots of thrust complex Cold-gas chemical propulsion small control restartable, controllable low thrust Ion in space booster restartable, controllable, high specific impulse complex The solid motor is used mainly as a booster for launch vehicles. Solid motors are almost never used in space because they are not controllable. The boosters are lit and then they fire until all the propellant has burned. Their main benefits are simplicity, a shelf life which can extend to years as in the case of missiles, and high reliability. Liquid motors come in many shapes and sizes: Most of them are controllable (can be throttled up and down), restartable, are often used as control and maneuvering thrusters. Liquid thrusters can be broken into three main types: monopropellant, bipropellant, and cryogenic thrusters. Monopropellants only use one propellant such as hydrazine. Bipropellants use a fuel and an oxidizer such as RP-1 and H O . Cryogenic systems use liquefied gases such as LiH and LOX (liquid hydrogen and liquid oxygen). Cryogenic means super-cooled. You would have to super-cool hydrogen and oxygen to make them liquids. With each step from monopropellant to bipropellant to cryogenic the thruster complexity goes up but the performance also goes up.

45. Propulsion Marketing, LLC 3north Natural Stone Products teamed with propulsion to create an incredible launch of their new product line at the PCBC convention in http://propulsion-lv.com/

News + 3north Natural Stone Products teamed with Propulsion to create an incredible launch of their new product line at the PCBC convention in San Francisco. Read More... London-based Adsdotcom Ltd. tapped Propulsion to help roll out their Play for Free sites in the North American market. Spots for InterCasino.net and InterPoker.net were produced to drive traffic to sites in the ever increasingly popular free gaming segment. Read More... HOME MISSION PROFILE ... CONTACT

46. Propulsion Partners propulsion Partners is a strategic business and technology consulting firm which provides services to enable our clients to smartly apply technology and optimize business http://propulsionpartners.com/

Home Company Solutions Clients ... Contact Propulsion Partners is a strategic business and technology consulting firm which provides services to enable our clients to smartly apply technology and optimize business productivity. SharePoint Development Integration Business Intelligence Content Management Workflow Business Consulting Max Out What You’ve Got! If you are looking to maximize current technology investments, we specialize in “total efficiency”. This systematic process steamlines and optimizes existing technology components within your department or organization to allow them to run more efficiently, provide maximum value, and ensure the highest return on your technology investment. New Partners, New Technology? If you need to integrate with new partners or adopt new technology, we focus on building scalable and interoperable systems using a "platform" approach. This allows you to quickly and seamlessly integrate systems and roll-out new technology and services for your customers and partners. The main drivers for this approach include: A well designed and integrated system will allow your partners to more easily work with you and get the information they need without relying on your IT department. Your employee productivity will improve with technology that is easy to use, powerful, and pervasive in their everyday working environment.

47. Platzer Marine Propulsion, Inc. A propeller designer and propulsion analysis services. http://www.platzermarine.com/

Home About Us Products Services ... Contact Us WELCOME! Platzer Marine Propulsion, Inc. located in sunny Fort Lauderdale, Florida (the world’s “yachting capital”), offers a unique combination of progressive products and services. Whether you seek maximum propulsive efficiency and vessel speed or maximum comfort through reduced vessel motions, noise and vibration, we have the experience, analytic tools and products to provide an optimum solution. North American Agent for: Hung Shen Propellers Seafury Surface Drives Humphree Interceptors Headline News (click text for details) Armstrong Marine, Inc. delivers 40 knot, fuel efficient Pilot boat fitted with Seafury Surface Drives to Guatemala at IBEX 2009 Humphree interceptors retrofitted on reducing fuel consumption up to 20% ... CFD Study on the Revolution Self Aspiring Aerator by Midan Industries Upcoming Events Fort Lauderdale International Boat Show October 28-November 1 2010 Fort Lauderdale, Florida Platzer Marine Propulsion, Inc. 2962 Trivium Circle Suite 202 Ft. Lauderdale, FL 33312

48. Propulsion - Definition Of Propulsion At YourDictionary.com noun. a propelling or being propelled; something that propels; propelling or driving force; Origin L propulsus, pp. of propellere (see propel) + ion http://www.yourdictionary.com/propulsion

49. Could NASA Use Ion Propulsion To Put A Ship Into Space? Could NASA use Ion propulsion to put a ship into space? No, NASA could not use ion propulsion for getting spacecraft into space. Ion propulsion is a great technology to move http://www.qrg.northwestern.edu/projects/vss/docs/Propulsion/1-could-nasa-use-ip

Propulsion Why ion propulsion? Could NASA use Ion Propulsion to put a ship into space? No, NASA could not use ion propulsion for getting spacecraft into space. Ion propulsion is a great technology to move ships once they are in space, and it is especially good for very long journeys. But it can't get a ship into space. The reason for this is that while the specific impulse for ion propulsion is high, it gives is low amounts of thrust. A high specific impulse means that the gases shooting out of the back of the rocket are moving at a very high speed but the low thrust means that there is not a lot of gas moving at any one time. The DS1 ion propulsion engine only produces 92 mN (milli Newtons) of thrust which is roughly equivalent to the weight of a couple drops of water. This means that the ion propulsion thruster is pushing the spacecraft forward with about as much force as gravity is pushing a couple drops of water down on your hand. We use ion propulsion in space because it does not take a lot of fuel. On a long trip this is good, because the more fuel a space ship needs, the heavier the ship will be and the harder and more expensive it will be to put the ship into space. However, in order to get a space ship into space, the ship must overcome the Earth's gravity and the resistance of the atmosphere. Getting to the right speed for this (called escape velocity) takes a huge amount of thrust, much more than an ion propulsion can produce. Conventional propulsion systems, such as liquid and solid fuel boosters, are used to put a ship into space.

50. NASA - Small Aircraft Propulsion: The Future Is Here Provides information on a program to transform the performance of small aircraft by developing revolutionary new engines. The resulting new propulsion systems include the GAP Diesel Engine and the FJX-2 Turbofan Engine. http://www.nasa.gov/centers/glenn/about/fs01grc.html

51. Engines, Drives, Propellers, And Fittings : The Boat Design And Boatbuilding Dir Powerboats Catamaran (77) Powerboats Vhull (390) propulsion Drives (29) propulsion Engines (36) propulsion Outboards (8) propulsion Propellers (25) Technical Resources http://www.boatdesign.net/directory/Propulsion/

Home Sitemap Search Top : Propulsion: Subcategories: Controls Drives Electric Engines ... Service Manuals Propulsion: Extreme Transom Bracket The Porta setback hydraulic transom bracket in models for 1-5 outboard motors and vertical travel range of 12"-24". Improves top end speed, boat performance, and handling. Better than a jack plate. (Added: 23-Feb-2000 Hits: 7998) My Links Rate Cached Visit Extreme Transom Bracket ... French Marine Motors Ltd We specialise in all aspects of Marine engineering including the supply of new marine engines, reconditioned marine engines, spare parts, propellers, stern gear and engineering chandlery. Our well stocked and equipped facilities allow us to provide you with a one stop solution to all your marine needs. (Added: 7-May-2005 Hits: 1593) My Links Rate Cached Visit French Marine Motors Ltd ... GGB Exhaust Technologies (Added: 17-Nov-2004 Hits: 1667) My Links Rate Cached Visit GGB Exhaust Technologies ... HermCo Small Boat Rigging and Repair Fiberglass outboard bracket and transom closure system. (Added: 5-Oct-2001 Hits: 2345) My Links Rate Cached Visit HermCo Small Boat Rigging and Repair ... Holley Marine fuel injection, carburetors, and fuel pumps.

52. Theory For Gravitic Propulsion A theoretical discussion of using gravity as a means of interstellar space propulsion. Touches on the theories of matter, energy, and space time. http://members.shaw.ca/mike.anderton

Theory for Gravitic Propulsion (In Progress) Revised and updated July 16, 2002 Universe Today - Space news from around the Internet, updated every weekday. PhysLINK.com Forward I would like to begin by informing the reader that I am not a physicist, I am an electronics design technologist. I have been researching electroluminescence since 1993, which resulted in my curiosity regarding the nature of photons (electromagnetic energy) and their interactions with electronic devices (matter). I would also like to qualify the title of this article. I did not entitle it " The Theory of Gravitic Propulsion" because it is not yet a complete theory, it is a new way of understanding our universe of matter and energy, based somewhat loosely upon some of the concepts outlined by Albert Einstein. The main focus of this article is the result of many years of thought and readings on the nature of energy, matter and gravity (which I refer to as matter's "gravitic effect" in space-time). It is my intent in this article to contrive a description of physical reality that binds and accounts for these "components" of our universe, while attempting to maintain compatibility with existing theories and knowns. In 1996, Dr. Miguel Alcubierre Moya, a physicist currently working (2001) at the Max Planck Institute in Germany, published a paper which demonstrates mathematically that the type of propulsion system I propose here is possible with certain limitations and apparent energy supply problems, which I believe will be solved as the true nature of physical reality becomes more fully understood. Unfortunately, I did not hear about or read his paper until 2001, 2 years after I first published this article and 5 years after his paper became available. I was surprised to discover that we both came to some of the same conclusions regarding the implementation of this as yet undeveloped technology. I respectfully acknowledge Dr. Alcubierre's work and thank him for his contribution to this new branch of physics I refer to as "Gravitics".

53. Propulsion Definition Of Propulsion In The Free Online Encyclopedia. propulsion prə′pəl shən (mechanics) The process of causing a body to move by exerting a force against it. propulsion. The process of causing a body to move by exerting http://encyclopedia2.thefreedictionary.com/propulsion

54. Tethers Unlimited Use of space tethers for propellantless electrodynamic tether propulsion, pumped tether length propulsion, and transferring energy and momentum from one spacecraft to another. http://www.tethers.com/

Latest News: SMDC Awards TUI Contract to Develop 100 W Deployable Array for CubeSats WIRED Magazine Covers TUI's RUSTLER and Terminator Tape Space Debris Solutions TUI Conducts Successful Helicopter Test of MAD Sensor Tow Bird TUI Demonstrates Terminator Tape and Electrodynamic Tether Deployers in Zero-G ... News

55. Propulsion - Dynetics propulsion. With propulsion design, fabrication, testing, and production expertise, Dynetics provides costeffective results on aggressive schedules for our customers. http://www.dynetics.com/descriptionpage.php?id=Propulsion&from=space

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

57. Basics Of Space Flight: 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 Thrust Conservation of Momentum Specific Impulse Rocket Engines ... 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. Figure 1.1 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.

58. Deep Space 1: Advanced Technologies: Solar Electric Propulsion FAQ A beginner s overview of ion propulsion. http://nmp.jpl.nasa.gov/ds1/tech/ionpropfaq.html

FREQUENTLY ASKED QUESTIONS ABOUT ION PROPULSION What is ion propulsion? Ion propulsion is a technology that involves ionizing a gas to propel a craft. Instead of a spacecraft being propelled with standard chemicals, the gas xenon (which is like neon or helium, but heavier) is given an electrical charge, or ionized. It is then electrically accelerated to a speed of about 30 km/second. When xenon ions are emitted at such high speed as exhaust from a spacecraft, they push the spacecraft in the opposite direction. What implications does this technology have for space exploration? If DS1 shows that electric propulsion works as well as is expected, there will be many new missions that will take advantage of it. Deep Space 4 is expected to use four ion engines to fly alongside a comet in 2004 so that it can land. Ion propulsion is not of value for missions that require high acceleration, and it often will not be worthwhile for missions that can be done quickly using conventional propulsion systems (such as missions to the moon). But for a wide variety of missions with high energy requirements (such as missions to asteroids and comets, Mercury and the inner solar system, and some to the outer solar system), the low but steady acceleration of ion propulsion wins out over the less efficient bursts from chemical alternatives. Why has NASA not used this technology before?

59. NASA - Propulsion White Sands Test Facility (WSTF) offers ambient pressure and altitude stands to test rocket propulsion test systems and single rocket engines. WSTF has extensive experience http://www.nasa.gov/centers/wstf/propulsion/index.html

60. Boeing: Satellite Development Center - Xenon Ion Propulsion Center - XIPS: The L of Boeing s commercial XIPS (Xenon Ion propulsion System). Designed for satellites, but a specialized version of it was used on NASA s Deep Space 1 spacecraft....... http://www.boeing.com/defense-space/space/bss/factsheets/xips/xips.html

@import url(http://www.boeing.com/css/boeing_global_styles.css); Cufon.replace('h1'); Cufon.replace('h2'); Cufon.replace('#pageName'); Boeing Employee Information Hotline at 1-800-899-6431 skip to: page content footer(site information) This site will look much better in a browser that supports web standards , but it is accessible to any browser or Internet device. Secure Logon Portal Logon: AccessTo Gateway Portal Logon: Boeing Partners Network Portal Logon: MyBoeingFleet Portal Logon: Supplier Portal ... MyBoeingExpress CLOSE Merchandise Corporate Governance Employee/Retiree Ethics ... Phantom Works Xenon Ion Propulsion Center 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 Development Center. 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.

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