PDF Publication Title:
Text from PDF Page: 416
406 Chapter 8 Xenon Ion System (NEXIS) ion thruster [14] calculated using this algorithm is shown in Fig. 8-9. The primary beam is assumed to be composed of a collisionless, singly ionized, quasi-neutral plasma expanding in a density- gradient electric field. The electron drift velocity is small compared to the electron thermal speeds, so momentum balance for the electrons can be written as me dve =e pe =0, (8.3-30) dt where ve , , and pe are the electron velocity, electric potential, and electron pressure, respectively. Assuming an ideal gas electron pressure, the potential follows the barometric law, e n = kTe ln ne , (8.3-31) where Te is the electron temperature, ne is the plasma density ( ne = ni ), and n is a reference plasma density. The plume is also assumed to be isothermal. This is a better approximation for space conditions than for the laboratory, where inelastic collisions with background neutrals will tend to cool the electrons. In this model, ions are assumed to be very cold compared with the electrons ( pi 0 ), and their acceleration to be dominated by the electric field: 5 4 3 2 1 0 m−3 4.2 × 1015 2.5 × 1015 1.4 × 1015 8.4 × 1014 4.9 × 1014 2.9 × 1014 1.7 × 1014 9.9 × 1013 6.8 × 1013 3.4 × 1013 2.0 × 1013 5 20-kW Ion Thruster −5 −4 −3 −2 −1 r (m) 1 2 3 4 Fig. 8-9. Calculated primary ion beam density profile for the 20-kW NEXIS ion thruster [14]. z (m)PDF Image | Fundamentals of Electric Propulsion: Ion and Hall Thrusters
PDF Search Title:
Fundamentals of Electric Propulsion: Ion and Hall ThrustersOriginal File Name Searched:
Goebel__cmprsd_opt.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)