PDF Publication Title:
Text from PDF Page: 385
Hall Thrusters 375 The current versus voltage predictions from the 1-D code [53] for different values of the transverse magnetic field in the channel for the SPT-100 thruster are shown in Fig. 7-16. As the transverse magnetic field increases, the impedance of the discharge increases significantly and higher voltages are required to obtain the transverse electron mobility required to achieve the desired discharge current. Increases in the mass flow rate increase the collisional effects in the plasma region, and this results in more current at a given voltage and magnetic field. In addition, Fig. 7-16 shows regions where the 1-D code predicts oscillatory behavior, as indicted by the solid points. This is discussed in the next section. The 1-D hybrid code results shown in Fig. 7-16 suggest that the code captures the trend in the discharge impedance as the magnetic field and applied voltage are changed; i.e., the discharge current decreases as the magnetic field increases at a given discharge voltage due to the lower electron mobility. However, the code does not predict the correct current-versus-voltage behavior for this thruster at low voltages. Figure 7-17 shows the current-versus-voltage data for one condition in the SPT-60 (a 60-mm channel outside-diameter version described in [4]). As the discharge voltage is decreased below about 200 V, the current initially increases until the energy of the electrons at very low voltage is insufficient to produce high ionization fractions, and the plasma density and discharge current then fall. Improvements in the electron transport physics are 7 6 5 4 3 2 1 0 50 100 150 200 250 300 Voltage (V) 350 400 100 G 150 G 200 G 300 G Fig. 7-16. Current-versus-voltage predictions from the 1-D code of Boeuf and Garrigues (from [53]) for the SPT-100, where the solid points indicate regions of predicted oscillations. Current (A)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 | RSS | AMP |