121. Propulsion Systems This is a basic primer on the physics of conventional propulsion systems. The function of any propulsion system is to make something move forward. http://www.ibiblio.org/lunar/school/library/physprop.html

A Primer on the Physics of Propulsion Contributed by Eric Moore This is a basic primer on the physics of conventional propulsion systems. It assumes some knowledge of physics, but not much at all. I'll try and keep everything as basic as possible, but this will be a technical treatment of the subject. The function of any propulsion system is to make something move forward. Due to the conservation of momentum, this can only be accomplished by making something else move backwards. (This article ignores "reactionless" drives, as none are known to exist, and postulating them is difficult.) The heavier the stuff going backwards is, and the faster it's going, the faster you go. Generally, in order to design a spacecraft it's easiest to base your calculations off the force the drive is capable of, so that's what we'll try and calculate. The first drive we will work on is a standard reaction drive. This is a drive where you take some material, and squirt it out the back of your ship (a chemical drive, a fusion drive, ion drive, etc). The basic relation we will use is the the one between change in momentum and force: F = dp/dt In other words, the the force exerted by or on a body is equal to the rate of change in it's momentum per unit time. This doesn't seem to help us much, but it's often easier to calculate the change in momentum than the force. Now all we need to know is how much stuff (mass) we're pushing out the back of the ship, and how fast it's moving away from us.

122. Marine Jet Home Develops propulsion systems for boats which are based on three patents with international patents pending. The prototype demonstrates the acceleration of a propeller with the safety and maneuverability of a jet. http://marinejettech.com

IntelliJET Marine, Inc. Formerly Marine Jet Technology Corp. The Technology That Makes Propellers Obsolete New! Presentation to MACC 2005 Home Page - Boating Development History First Prototype ... Contact Us IntelliJET Home The Revolutionary . . . IntelliJet Revolutionary Technology engineered for acceleration fast - responsive - dependable And . . . no rooster tail ! The jet boat that can do everything a propeller boat can do and a lot more. Terrific acceleration for skiers. It's fast. And it can carry loads. Designed for Dependability..... Engineered for Acceleration At last, the safety and convenience of a jet combined with the acceleration of a propeller. Designed for dependability and simplicity, with no exposed propeller to threaten skiers or hang up on submerged rocks, IntelliJet offers lower maintenance and less down time. New Technology Virtual Reality Video (with sound) P rototype Video for DSL/ Cable (with sound) Prototype Video for 56K (with sound) Features and Benefits Almost all boaters would like the same combination of features. One or more of these features is missing from every boat propulsion system on the market today. IntelliJet Marine offers all of these and more:

123. Space Plasma Physics Modelling Page An advanced plasma propulsion system that will create a large scale magnetic bubble around the spacecraft to ride the solar winds. http://www.ess.washington.edu/Space/propulsion.html

Advanced Electric Propulsion Chemical rockets have limited application for space applications due to the fact that the fuel is relatively slow (low specific impulse) relative to the speeds needed to move efficiently about the solar system. As a results chemcial systems are massive, and the trip times for missions are very long. Research at UW in this area is for the development of faster propellants that can provide substantial reductions in cost and trip time. To achieve these efficiencies plasma systems (i.e. charged particles) are required where electric and magnetic field can be used to accelerate the plasma propellants to speeds more than an order of magnitude faster than can be achieved by chemical rockets. The systems below detail devices under active development. Cast of Characters: Robert M. Winglee Areas of Active Interest: High Power Helicon is an electrodeless plasma thruster that is able run at kW to 100's kW to produce thruster levels as high as several Newtons of force, at high power and gas effciency. Mini-Magnetospheric Plasma Propulsion (M2P2) is a system that can leverage energy from the solar wind to augument the onboard propulsion for spacecraft while minimizing the spacecraft power requires. Potential for radiation shielding is still under investigation.

124. MagBeam Propulsion - To Mars And Back In 90 Days: Science Fiction In The News MagBeam propulsion To Mars And Back In 90 Days re Larry Niven/Jerry Pournelle on 10/16/2004 Science Fiction in the News. http://technovelgy.com/ct/Science-Fiction-News.asp?NewsNum=232

125. "Purdue AAE Propulsion Website" Purdue School of Aeronautics and Astronautics. propulsion Web Page In addition, you can find out more about Purdue s propulsion program here. http://roger.ecn.purdue.edu/~propulsi/propulsion/

Purdue School of Aeronautics and Astronautics Propulsion Web Page Sponsored by Allied Signal Welcome to the home of smoke and fire. The following pages contain images and specs for many of today's rocket and airbreathing propulsion systems, as well as a compilation of useful data for propulsion analysis using fundamentals of compressible flow and combustion. In addition, you can find out more about Purdue's Propulsion program here Engine Types, with Pictures and Statistics Rocket Engines Solid Rocket Motors Liquid Rocket Engines Satellite Propulsion Systems Advanced Concepts Airbreathing Engines Some Basic Concepts Turbojet Engines Turbofan Engines Turboprop and Turboshaft Engines ... VTOL and other advanced concepts Useful Propulsion Data Fundamental Properties of Internal Fluid Flows 1-D Isentropic Flow Gamma=1.4 Gamma=1.3 Gamma=1.2 Normal Shocks ... Rayleigh Flow Rocket Thrust Coefficient Tables Gamma=1.4 Gamma=1.3 Gamma=1.2 U.S. Standard Atmosphere Combustion and Thermochemical Data Periodic Table of the Elements Specific Heat Data for Common Gases NASA Thermochemistry Code - Sample Input Files Heats of Formation and Chemical Composition ... Constant Pressure Equilibrium Constants (Kp Data) Cool Video Clips Test Firing at Allegany Ballistics Laboratory, Alliant Techsystems, Inc.

126. Aerodynamics For Students Covers fluid mechanics, theory of flight, aerodynamics, gasdynamics, aircraft performance, propulsion, and data sheets. http://www.mech.eng.usyd.edu.au/aero/contents.html

127. NASA - JPL Home Jet propulsion Laboratory. CENTER HOME ABOUT JPL JPL NEWS MULTIMEDIA MISSIONS JPL EVENTS Search Jet propulsion Laboratory. Go. NASA FACT? http://www.nasa.gov/centers/jpl/home/

The nasa.gov site requires that JavaScripts be enabled in your browser. For instructions, click here + Text Only Site + Contact JPL + NASA Home ... + Center Home preLoad('/templateimages/navigation/leftnav/centers/jpl/nav_left_home,/templateimages/navigation/leftnav/centers/jpl/nav_left_about,/templateimages/navigation/leftnav/centers/jpl/nav_left_business,/templateimages/navigation/leftnav/centers/jpl/nav_left_education,/templateimages/navigation/leftnav/centers/jpl/nav_left_events,/templateimages/navigation/leftnav/centers/jpl/nav_left_missions,/templateimages/navigation/leftnav/centers/jpl/nav_left_multimedia,/templateimages/navigation/leftnav/centers/jpl/nav_left_news'); The Mars Reconnaissance Orbiter mission will return more data about the red planet than all other Mars missions combined. + More NASA Facts... 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. + Read More 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.

128. Basics Of Space Flight The goal of this training module from the Jet propulsion Laboratory is to provide an aid for identifying and understanding the general concepts associated with space flight in general and deep space missions in particular. http://www.jpl.nasa.gov/basics/

+ View the NASA Portal Search JPL SECTION I ENVIRONMENT The Solar System Reference Systems Trajectories Planetary Orbits ... Electromagnetics SECTION II FLIGHT PROJECTS Mission Inception Experiments S/C Classification Telecom ... Navigation SECTION III OPERATIONS Launch Cruise Encounter Extended Ops ... Editorial Page T he people of Caltech's Jet Propulsion Laboratory (JPL) create, manage and operate NASA projects of exploration throughout our solar system and beyond. Basics of Space Flight is a training module designed primarily to help JPL operations people identify the range of concepts associated with deep space missions, and grasp the relationships these concepts exhibit. It also enjoys popularity among high school and college students, as well as faculty, and people everywhere who are interested in interplanetary space flight. This website attempts to offer a broad scope, but limited depth, as a background for further investigation; many other resources are available, of course, for delving into each of the topics related here. Indeed, any one of these topics can involve a lifelong career of specialization. This module's purpose is met if the participant learns the scope of concepts that apply to interplanetary space exploration, and the relationships among them. Basics of Space Flight is intended to be used online via the worldwide web (http://www.jpl.nasa.gov/basics). Links to external sites provide further depth to many topics. There are interactive quizzes to let you check your own progress (no records are kept). No academic credit is offered for completion.

129. NASA - Emerging Possibilities For Space Propulsion Breakthroughs Emerging Possibilities for Space propulsion Breakthroughs. Originally published in the Interstellar propulsion Society Newsletter, Vol. I, No. http://www.nasa.gov/centers/glenn/research/warp/ipspaper.html

The nasa.gov site requires that JavaScripts be enabled in your browser. For instructions, click here + Text Only Site + Contact Glenn + NASA Home ... + Center Home preLoad('/templateimages/navigation/leftnav/centers/glenn/nav_left_home,/templateimages/navigation/leftnav/centers/glenn/nav_left_about,/templateimages/navigation/leftnav/centers/glenn/nav_left_business,/templateimages/navigation/leftnav/centers/glenn/nav_left_education,/templateimages/navigation/leftnav/centers/glenn/nav_left_events,/templateimages/navigation/leftnav/centers/glenn/nav_left_missions,/templateimages/navigation/leftnav/centers/glenn/nav_left_multimedia,/templateimages/navigation/leftnav/centers/glenn/nav_left_news,/templateimages/navigation/leftnav/centers/glenn/nav_left_projects'); Emerging Possibilities for Space Propulsion Breakthroughs Originally published in the Interstellar Propulsion Society Newsletter, Vol. I, No. 1, July 1, 1995. Marc G. Millis Space Propulsion Technology Division NASA Lewis Research Center Cleveland, Ohio The ideal interstellar propulsion system would be one that could get you to other stars as quickly and comfortably as envisioned in science fiction. Before this can become a reality, two scientific breakthroughs are needed: discovery of a means to exceed light speed, and discovery of a means to manipulate the coupling between mass and spacetime. This article explains why these breakthroughs are needed and introduces the emerging possibilities that may eventually lead to these breakthroughs. It should be noted that either of these breakthroughs by itself would have revolutionary consequences which would be of enormous value.

130. Š”Ž®‰ïŽÐ@ÎŠ_ Experts in waterjet marine propulsion systems up to 10,000 hp. http://www.ishigaki.co.jp/

b b ÎŠ_ƒƒ“ƒeƒiƒ“ƒXŠ”Ž®‰ïŽÐ b ƒAƒCƒlƒbƒgƒfƒoƒCƒXŠ”Ž®‰ïŽÐ b English ISHIGAKI Company,Ltd. ƒCƒVƒKƒLƒz[ƒ€ƒy[ƒW‚ÉŒfÚ‚̎ʐ^E¤•W“™‚Ì–³’fŒfÚ‚ð‹Ö‚¶‚Ü‚·B »•i‚Ì–â‚¢‡‚킹AƒŠƒ“ƒNŠó–]“™‚Í spokes@ishigaki.co.jp

131. Unconventional Spacecraft Propulsion alternative spacecraft propulsion concepts to meet performance or mission objectives. Laser propulsion concepts have been described for several decades. http://www-phys.llnl.gov/clementine/ATP/Laser.html

Special Studies Program Laser Propulsion The Special Studies Program (within ATP) has examined alternative spacecraft propulsion concepts to meet performance or mission objectives. Laser propulsion concepts have been described for several decades. The laser beam is used to heat a propellant with the energetic expansion driving the craft. A series of ATP devised tests were conducted in which a laser beam was directed at a pusher plate with machined paraboloid dimples. Light was focused by each dimple on a spot behind the plate. The focused beam heated air pockets and the expanding pockets imparted a thrust to the plate. This concept provides respectable thrust in the atmosphere. In space (vacuum) the dimpled plate is jettisoned to expose a block of solid propellant which is ablated by the laser beam to produce thrust. Clementine in Cyberspace ASTRID Rocket Experiment For more information on this, contact: kare1@llnl.gov Jordin Kare Related Papers TBD

132. Compositex: Innovators In Rocket Propulsion, Composite Structures, Aerodynamics, Small hightech business located near Salt Lake City, Utah, specializing in aircraft designs, liquid rocket propulsion systems, and advanced composite structures. http://home.earthlink.net/~compositexinc

Compositex, Inc. Last updated November 1, 2003 Click on any to the areas you wish to see below: Company Info. What's New Photo Gallery Key Personnel Compositex, Inc. is a small business located near Salt Lake City, Utah, USA. Our company is dedicated to advancing the state of the art in aircraft, rocket propulsion systems and composite structures. We combine unique and innovative design ideas with efficient fabrication technologies, resulting in a very high delivered value to our customers. In other words, more bang for the buck! We are continually improving our products and services to offer our customers state-of-the-art performance and high reliability at affordable prices. Whether it's developing a new rocket engine, designing a filament-wound composite tank, building a revolutionary new aircraft, researching a new material, or engineering the next generation of launch vehicles, Compositex, Inc. can get the job done more efficiently and for less money than you might imagine. Of course, talk is cheap, so give us the chance to prove to you we're more than just talk. We are very serious about our work, and we know that the key to our success is

133. NASA Aeronautics Match Game Concentration game from the propulsion Systems Analysis Office at the NASA Glenn Research Center. http://www-psao.grc.nasa.gov/Concentration/

Concentration on Aeronautics Number of Tries: Click here for information about the images. Last updated 3/25/99. ASAO Webmaster: Jeff Berton Responsible NASA Official: Robert Plencner

134. Alternative Propulsion If you do not have a framescapable browser, get one here or follow this link to the alternative propulsion site. http://www.pipeline.com/~bkyaffe/altfuel/

If you do not have a frames-capable browser, get one here or follow this link to the alternative propulsion site.

135. IRS: Research & Development D Research carried out by the Institute of Space Systems. Also contains a good overview of the various types of electric propulsion. http://www.irs.uni-stuttgart.de/RESEARCH/fe_f200e.html

IRS Homepage Deutsche Version Institute for Space Systems Research Field: Electric Propulsion and Plasma Wind Tunnel Technology Development of plasmadynamic rocket thrusters of all performance leves between o.5 kW and 1 MW. Ample numerical codes are plotted, arcjet instabilities are investigated and cathode erosion mechanisms are researched for the construction of these arcjet thrusters. Preparation of the arcjet thrusters' flight mission. ( ATOS on a P3D satellite / with Ariane 502) In five plasma wind tunnels , all equipped with thermal and magnetoplasmadynamic sources, the thermal conditions during the reentry of a space craft into the Earth's atmosphere or into the atmosphere of other celestial bodies can be simulated. The catalytic investigations of thermal protection materials can be carried out in the inductively heated plasma wind tunnel PWK3 . Development and qualification of measuring devices for space gliders and return capsules. Theoretical, numerical model construction of the plasma wind tunnel simulation for the development of new diagnostic and calculation procedures. Development of plasma sources for material processing and chemical process control.

136. Anti-gravity Propulsion Comes ‘out Of The Closet’ - Jane's Civil Aerospace Antigravity propulsion comes ‘out of the closet’ By Nick Cook, JDW Aerospace Consultant, London Boeing, the world’s largest aircraft manufacturer, http://www.janes.com/aerospace/civil/news/jdw/jdw020729_1_n.shtml

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137. North American Marine Jet Manufacturer of Nomera and Traktor marine jet propulsion systems, service and replacement. http://www.marinejet.com

E-Mail Signup Inquiry Form Contact us NAMJ Products ... Home Welcome To North American Marine Jet The Jet That Started The Evolution Featuring a huge 18" impeller, the TJI-150 produced very high thrust at very low hull speed through a 13" nozzle. This design was then offered in a desirable "skid pak." The skid pak was an integral unit that included the jet, driveline, transmission, grid cooler and diesel engine, all assembled and tested prior to shipment. Designed by NAMJ engineers, the TRAKTOR JET I-150 was built to meet the high thrust, slow speed requirements of the Alaskan salmon fishing fleet. Please Explore our Web Site and see why North American Marine Jet, Inc. is recognized as the World leader in High-Thrust/Slow-Speed Marine Jets. document.write(""); Phone: 501.778.4151 Fax: 501.778.6381 P.O. Box 1232 Benton AR, USA 72018 Printer-friendly format Top of Page Powered by WebPress

138. PROPULSION http://www.propulsion-media.com/

139. NASA Aeroquiz Aeroquiz page of the propulsion Systems Analysis Office at the NASA Glenn Research Center.Archives for 19972001; site no longer active. http://www-psao.grc.nasa.gov/asaoquiz.html

W elcome to the weekly aerospace quiz page of the Airbreathing Systems Analysis Office at the NASA Glenn Research Center! At the beginning of every week, we'll post an aerospace-related riddle or trivia question as a shameless way to attract attention to our group and web pages. The winning answer will be chosen from all correct submissions. Although being first counts, it may not be sufficient to win if a later answer is worded better or more clearly. Check every Monday for the newest question and for the answer to the previous question. What do I win? Your name (unless you object) will be announced here. Sorry, no material prizes. This is the US government, you know. This week's question: Sorry, the Aeroquiz is no longer active! It was a great run, but after five years, I've run out of the questions and time necessary to keep this site operational. I will try to find another editor, so stay tuned. Until then, thanks for tuning in! Best regards, The Aeroquiz Editor. Answer Quiz Send a question to us! If you think our aerospace trivia questions could be better (and you'd be right), you can submit one of your own! Send us your question and answer by using the button below. If we like it, we'll use it.

140. Heavy Vehicle Propulsion Materials Program Heavy Vehicle propulsion Materials. U. S. Department of Energy Office of FreedomCAR and Vehicle Technology Program. PURPOSE key enabling materials http://engine-materials.ornl.gov/

Heavy Vehicle Propulsion Materials U. S. Department of Energy Office of FreedomCAR and Vehicle Technology Program PURPOSE : key enabling materials technologies to increase energy efficiency and reduce exhaust emissions Program Organization Workshop and Program Plan Program Highlights Office of ... Oak Ridge National Laboratory (ORNL) is operated by UT-Battelle, LLC , for the U.S. Department of Energy Comments?

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