2 edition of High performance magnetic bearings for aero applications found in the catalog.
High performance magnetic bearings for aero applications
Published
1997
by School of Engineering & Applied Science, University of Virginia, National Aeronautics and Space Administration, National Technical Information Service, distributor in Charlottesville, VA, [Washington, DC, Springfield, Va
.
Written in
Edition Notes
| Statement | submitted by P.E. Allaire ... [et al.]. |
| Series | [NASA contractor report] -- NASA-CR-203487., NASA contractor report -- NASA CR-203487. |
| Contributions | Allaire, Paul E., United States. National Aeronautics and Space Administration. |
| The Physical Object | |
|---|---|
| Format | Microform |
| Pagination | 1 v. |
| ID Numbers | |
| Open Library | OL15543413M |
In order to apply magnetic bearing technology to an application, it does take a significant amount of work for the machine designer working closely with the magnetic bearing supplier. To take advantage of the performance advantages of magnetic bearings, you can combine them with a high-speed brushless DC motor or permanent magnet motor. The design of an example set of magnetic bearings for a small high speed compressor is presented. The bearings were designed to replace the fluid film bearings of an existing compressor design. Reduction of parasitic power losses due to the bearings is projected to be from the current 2 kW down to approximately W.
Aero-engines & APU Hot Air Valves Surveillance Systems. Read More. Motorsport. Wheel Bearings Gearbox Bearings MGB-Bearings Suspensions Bearings. Read More. Auxiliary Bearings for Active Magnetic Bearings. Read More. Cryogenic Industry. LNG Pumps Refrigerant Pumps Gas Expanders High Speed Cutting (HSC) High Performance Cutting (HPC) Read. Ball bearing units for high temperature applications. Roller bearing units. Metric roller bearing units – SYNT and FYNT series (SKF ConCentra) Inch roller bearing units – SYE, SYR, FYE and FYR series. Bearing housings. Split pillow block housings – SNL and SE 2, 3, 5 and 6 series. Split pillow block housings – SNLN 30 series.
@article{osti_, title = {Turboexpanders with pressurized magnetic bearings for off-shore applications}, author = {Agahi, R R and Ershaghi, B and Baudelocque, L}, abstractNote = {There are two primary parameters that encourage the use of magnetic bearings in turbomachinery: oil-free process and space requirements. For cryogenic processes such as hydrogen purification and ethylene plants. These high-performance stages incorporate best-in-class electronic and magnetic circuits, unique feedback technology, dynamic trajectory management, application specific materials, and an extremely powerful, yet easy to use, control system. The result is a large selection of linear, rotary, and multi-axis positioning systems with nanometer and.
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HIGH PERFORMANCE MAGNETIC BEARINGS FOR AERO APPLICATIONS FINAL REPORT Submitted To: National Aeronautical and Space Administration Lewis Research Center Mail Stop Brookpark Road Attention: Ms. Kaprice Harris Grants Officer Tel: For Consideration By: Mr.
Andrew Provenza Project Monitor Tel: Submitted By. Get this from a library. High performance magnetic bearings for aero applications: a final report, NASA grant no. NAG [Paul E Allaire; United States.
High Performance Magnetic Bearings for Aero Applications. By E. Maslen, P. Allaire, D. Lewis, R. Williams, R. Humphris, C. R space devices, or energy storage flywheels. In other applications, the heating caused by the magnetic bearing must be removed.
Excessive heating can be a significant problem in machines as diverse as. The term magnetic bearings refers to devices that provide High performance magnetic bearings for aero applications book suspension of a rotor. Because of the contact-less motion of the rotor, magnetic bearings offer many advantages for various applications.
Commercial applications include compressors, centrifuges, high-speed turbines, energy-storage flywheels, high-precision machine tools, etc. Magnetic bearings are a typical mechatronic Cited by: 8. Compiling the expertise of nine pioneers of the field, Magnetic Bearings - Theory, Design, and Application to Rotating Machinery offers an encyclopedic study of this rapidly emerging field with a balanced blend of commercial and academic perspectives.
Every element of the technology is examined in detail, beginning at the component level and proceeding through a thorough exposition of. DEVELOPMENT OF HIGH-SPEED INDUSTRIAL TURBO BLOWERS WITH FOIL AIR BEARINGS JongSik Oh* and HeonSeok Lee KTURBO INC.
Kumho, Buyong, Chungwon, ChungbukKorea South ABSTRACT In the paper, the development of high-speed industrial turbo blowers with foil air bearings is presented as a first successful commercialization in the world.
The magnetic bearings are placed immediately above the motor/generator and immediately below the flywheel. Rolling element backup bearings are placed outboard of the magnetic bearings.
The magnetic bearings are inboard of the backup bearings for two distinct reasons: 1) this is the best bearing location from a rotordynamic standpoint, and. •System performance •Additional magnetic bearing benefits. 3 •First patents came during WWII •Magnetic bearing technology introduced in on critical naval applications •Introduced in commercial HVAC in •Bearings support load using magnetic levitation high speed computing, nuclear physics.
Genta, in Kinetic Energy Storage, Magnetic bearings. Magnetic bearings appear to have many advantages and to be particularly suited for flywheel applications. The absence of contact between solid surfaces is important for two reasons: firstly, there is no need of lubrication, making vacuum operation easier, and, secondly, the drag torque is very low.
A high gear ratio MGB is also a suitable candidate for single stage high-speed transmission applications such as helicopter power transmissions. In this paper, the conventional planetary magnetic gearbox is equipped with a three-phase winding to provide additional magnetic levitation capabilities besides torque transmission, thus creating a.
Some magnetic bearings provide a full non-contact support of an object, whereas others provide only a partial support working together with more conventional mechanical bearings.
While a wide variety of magnetic bearings have been developed, only one type has been widely accepted in the industry so far - Active Magnetic Bearings (AMBs). Passive magnetic bearings on the other hand do not require this hardware (Siebert, et al. ()). They can be made smaller, more effi cient and reliable.
The disadvantages of passive magnetic bearing are that they typically have lower stiffness and lower damp-ing than similar size active magnetic bearings, and vibration control cannot be used.
Piscifun Spark Pro Baitcasting Reel - Low Profile Baitcaster Fishing Reel, Super Compact LB Carbon Fiber Drag, 11 + 1 Shielded Ball Bearings Magnetic Brake System. This dissertation covers aspects of modeling and control of magnetic levitation devices, specifically, active magnetic bearings (AMBs) and self-bearing motors (SBMs).
Chapters focus on AMBs and how they are used to levitate high-speed rotating shafts in a variety of applications. High speed applications require high quality bearing solutions. Magnetic bearings are wearless and maintenance-free thanks to contactless bearing.
The magnetic bearings do not require any lubricant, making them ideal for high-speed magnetic bearing generates bearing forces purely electromagnetically and is therefore particularly suitable for machine operation in a vacuum.
To meet specific application needs, we provide a vast range of standard or custom bearings designed for the aerospace industry offering numerous benefits and GGB high performance bearings can replace larger, heavier, lubricated metal bearings in many applications.
In order to apply magnetic bearing technology to an application, it does take a significant amount of work for the machine designer working closely with the magnetic bearing supplier. To take advantage of the performance advantages of magnetic bearings, you can combine them with a high-speed brushless DC motor or permanent magnet motor.
The concept behind magnetic bearings has been around for many years and for a long time the use of the technology was limited to extremely specialized, unique or ultra-high speed applications.
Developments in magnetic bearing technologies along with advancements in computing power have seen a reduction in the size of control systems and.
Explore Active Magnetic Bearings with Free Download of Seminar Report and PPT in PDF and DOC Format. Also Explore the Seminar Topics Paper on Active Magnetic Bearings with Abstract or Synopsis, Documentation on Advantages and Disadvantages, Base Paper Presentation Slides for IEEE Final Year Mechanical Engineering ME or Production Automobile Students for the.
This final year effort concentrated on power loss measurements in magnetic bearing rotors. The effect of rotor power losses in magnetic bearings are very important for many applications. In some cases, these losses must be minimized to maximize the length of time the rotating machine can operate on a fixed energy or power supply.
SKF is a world leading supplier of a wide assortment of aerospace solutions encompassing bearings, seals, rods, struts and precision elastomeric devices for airframe, aero-engines and gearboxes.
With a worldwide presence, SKF Aerospace serves all the players in the aerospace industry and supports them in the development of their new programmes.Centrifugal, two-stage, magnetic-bearing chiller compressors equipped with variable-speed drives are a relatively new technology that operates at a high efficiency.
Based on this case study, independent analysis by the U.S. Department of the Navy has verified that magnetic bearing compressors operate more efficiently than reciprocating and screw compressors, especially during partial load.This paper presents a hybrid air foil bearing (a combination of hydrostatic and hydrodynamic) with mm in diameter designed for aero-propulsion applications, and preliminary test results on start-stop friction characteristics and thermal behavior at low speeds be rpm are presented.
