Thursday, November 28, 2019

Navy NEC Codes- 9502 Instructor

Navy NEC Codes- 9502 InstructorNavy NEC Codes- 9502 InstructorNEC Designation NEC 9502 Instructor Description Directs teaching/learning activities in schools training centers and selected reserve units. Writes learning objectives prepares test items evaluates instructional materials and the results of instruction and counsels students on academic learning problems. Qualification Data Source Rating(s) All Billet Paygrades E4-E9 Personnel Paygrades E4-E9 Course Mandatory Open to Women? Yes Notes 1. The Commanding Officer of the individuals permanent duty station is responsible for recommending NEC award for graduates of 3AIR75100-00X. Recommendations will be submitted on NAVPERS 1221/6 to PERS-4013D2. 2. Graduates of Instructor Training at Naval Nuclear Power Training Command (UICs 0617A, 45859), Naval Nuclear Power Training Unit, Ballston Spa, NY (UIC 62986), or Naval Nuclear Power Training Unit, Charleston, SC (UICs 47723, 49230) may be awarded this NEC upon transfer to instructor bi llets in these UICs. Personnel submit NAVPERS 1221/6 to PERS-4013D2. 3. E-5 and above to attend BIT. E4 may only attend with overall evaluation of 4.0 on most recent and written waiver from the ultimate gaining command. No E-3 and below will be accepted for instructor duty. Information contained on this page is derived from the Navy Enlisted Manpower and Personnel Classifications and Occupational Standards Manual, Volume II, NAVPERS 18068F, which is the official manual for Navy Enlisted Classifications (NECs).

Saturday, November 23, 2019

Five 3D Printing Apps for Engineers

Five 3D Printing Apps for Engineers Five 3D Printing Apps for Engineers Think. Design. 3D Print. If you are an engineer, chances are that you are already doing this for rapidly prototyping products or complex machine parts. 3D printing is helping bridge the distance between the virtual and physical by enabling engineers to turn their designs into reality.From jigs and fixtures to tools in space, from houses to cars, from prosthetics to valve tissue, engineers have been exploring the potential of 3D printing to give shape to their ideas.However, an idea doesnt itself turn into a 3D printed product overnight. You first need a 3D design to 3D print. While there are many desktop design software programs available for modeling, there are also several on-the-go mobile apps. ASME.org rounds up a list of five 3D printing-related apps engineers could use for designing, viewing, and 3D printing.Engineers can design or view parts using 123D Design. renommee AutodeskAutodesk 123DAutodesk 123D is a family of free 3D apps linked together in the cloud. Using 123D Design, engineers can design their own products or parts and also view projects created by other 123D Design users, right in the app. Whether it is a building or part of a machine, engineers can turn their photos into realistic 3D models using 123D Catch by taking a series of photographs with an iPhone or iPad from different angles. After snapping photos on the phone and uploading to Autodesk Cloud, where the photos are transformed into a 3D model, they can then use the 123D Catch web app to edit the model or send for 3D printing. Autodesks online app, Tinkercad, also enables users to create and print 3D models.MorphiAn iOS app called Morphi is a 3D modeling and design app for creating printable 3D models using a touchscreen. Engineers can explore libraries of 3D shapes, from basic to platonic solids. The app simplifies modeling tools that allow users to add, subtract, and rotate objects to build 3D models. Using the se libraries and tools, users can create 3D-printable models, which can be exported in .STL format for uploading to 3D printers using third-party slicing software or printing through 3D printing services. The app developer, Inventery, Inc., envisions many uses for Morphi including creating prototypes and building models to teach STEAM (science, technology, engineering, art, and math) subjects.The eDrawings app allows users to view native SolidWorks files. Image SolidWorkseDrawingsCreated by SolidWorks, a 3D mechanical CAD program widely used among engineers and designers, eDrawings is a CAD viewer available for both iOS and Android platforms that allows users to view native SolidWorks parts, assemblies, and drawings files. By simply activating the devices camera, engineers can bring their virtual 3D designs in a real context. They can interpret any SolidWorks drawing by dynamically viewing the 3D model as it automatically rotates through each drawing view. Another version of the app , eDrawings Professional, helps create review-enabled eDrawings files that allow multiple users to mark up and provide feedback on product designs before exporting and 3D printing.Engineers can navigate complex models using the SketchUp Mobile Viewer. Image Trimble NavigationSketchUp Mobile ViewerA popular 3D modeling program for applications such as architectural, interior design, civil, and mechanical engineering called SketchUp also offers a free SketchUp Mobile Viewer to view and print models created in SketchUp. With the viewer, users can orbit, explore, and present their 3D models. Engineers can also navigate complex models using intuitive multi-touch gestures and use the camera menu to select any of the standard camera views or choose from the list of scene-based camera angles. The app offers zoom out to the extent of a model to reorient view, and models can also be exported using the desktop version for 3D printing. The app is available for the iOS and Android.MakerBot Mobil eMakerBot offers apps for different skill levels that are designed to work with Fifth Generation MakerBot Replicator 3D Printers. With MakerBot Mobile, engineers can use their smartphones to prepare files from their MakerBot Cloud Library for 3D printing. With mobile access to Thingiverse, they can have access to multiple 3D downloadable digital designs. They can also monitor, pause, and cancel prints right from their mobile device. MakerBot also offers a suite of apps for users new to prototyping in 3D printing. For example, Zotebook allows makers without extensive 3D design experience to quickly prototype concepts and Leopoly offers a number of modeling tools to work on 3D designs.With 2D printer companies like HP and Xerox also entering the 3D printing market and many crowdfunded projects being launched online, 3D printers are becoming more affordable. However, for engineers who dont have a 3D printer, they can order their prints using online services and apps such as Shapeways, i.materialise, and 3D hubs.Are there are any 3D printing apps that you are using? Please let us know in the comments below.Learn more about the latest technologies in 3D printing at ASMEs AM3D 2015 in India and Boston For Further Discussion

Thursday, November 21, 2019

Concentrating Solar Power Cracking the Code

Concentrating Solar Power Cracking the Code Concentrating Solar Power Cracking the Code Concentrating Solar Power Cracking the CodeHow do you know when a new technology has truly arrived? Contrary to what one might think, its not when manufacturers of the next big thing surpass break-even and settle comfortably in the black. Or when brand awareness has evolved such that a product becomes the solution of choice among potential users. Rather, the highest praise makers of any promising new technology can hope to receive is when industry cares enough about the product to demand rules be written to ensure it performs exactly the way it should.Its these heightened expectations, says Bernie Pastorik, engineering manager of testing services at McHale Associates, Inc., that separates the good from the great. You can come up with a good engineering idea that benefits industry, and for years, theres no code, he says. Its only once it becomes prevalent that industry will begin to feel the need to have a well-defined and agreed-upon standard that everybody respects.The Need for CodesIn the field of alternative energy, one of the more promising technologies now being put through these paces is concentrating solar power (CSP) systems, which use the suns heatrather than fossil fuelsto boil water and create steam that spins the large turbines that drive electricity generators. Due to the spate of state and federal legislation passed to wean the U.S. off of foreign oil and promote green energy, CSP systems, along with their carbon-neutral cousins, wind, and geothermal, are taking off. That development has created a need for codes to provide industry with guidance on how to prepare, execute, and report on performance tests, says Pastorik.Concentrating solar power (CSP), a promising technology, uses the suns heat to power turbines that drive electricity generators.According to researchers at the National Renewable Energy Laboratory, Golden, CO, which forms public and private part nerships to make CSP technologies competitive in power markets worldwide, CSP offers one of the fruchtwein promising solutions to the power generation issues facing the West. There, rising population growth, drought conditions that render hyrdropower infeasible, and rising demand for electricity, make the idea of harnessing the power of the sun, especially during the season when both its potency and the public demand on utilities peak, a win-win.In 2010, much of that potential came to fruition as six CSP plants received permits from the U.S. Bureau of Land Management. According to U.S. Solar Market Insight, a joint publication of the Solar Energy Industries Association (SEIA) and GTM Research, the rash of permits represents a strong comeback in the U.S. after a two-decade fallow periodfrom 1996-2006that followed an initial surge of CSP development in California in the 1980s. Today, the U.S. Southwest is the site of 41 new CSP projectson tap to generate a combined total of 9 GWinclud ing some of the largest CSP projects to be built. These will come zugreifbar over the course of the next five to six years, with 2013 expected to be a milestone for the industry with some eight projects due for commissioning.ASME CommitteeThat timing could dovetail nicely with the work Pastorik and other CSP stakeholders are doing on the ASME committee formed in 2009 to ensure performance testing codes for those plants are ready to handle the boom. Pastorik, who now serves as vice chair of that ASME committee, recalls the 2009 ASME Conference on Energy Sustainability in San Francisco at which attendees from various sectors of the solar Industry debated whether there was enough interest in creating a code. Should we even bother? But consensus emerged that rapidly advancing CSP technologiesparabolic trough, linear fresnel, and power towercombined with stepped-up government funding and legislation to push green energy meant the time for a new code had come. Performance Test Code (PTC) 52 was born.Citing the usual four-to-five-year gestation period for new codes, Pastorik estimates the committee is about halfway through the process. With the codes goals and scope defined, members are now drilling into each technology to determine whats important in terms of those goals and how do we get there? What measurements do we need and what considerations do we evaluate for testing? All angles must be assessed, from the duration of the test to the test conditions themselves Is one hour adequate or is a full-day test, with equipment evaluated from sunrise to sunset, more meaningful? Should the test be conducted near solar noon and only on sunny days?These are the questions committee members, carefully chosen from among original equipment manufacturers (OEMs), independent engineering firms, testing service companies, owners, PV contractors, and government entities, have been debating to arrive at the right answersand a solid code. A firm grasp of engineering knowledge, experi ence, and research represented on the committee ensures that risk doesnt get pushed unfairly onto the owners, lets say, or the OEMs, explains Pastorik. A balanced perspective ensures you get the right compromises on the right values, and most importantly the most accurate test thats economically possible within a reasonable time frame. Thats what everyone is shooting for.The lists of stakeholders who stand to benefit is a long one. Among the many who await the new codebeyond those engineers who will use the codes guidelines to test CSP equipment performanceare design engineers who can use PTC 52 to identify and plan proper instrument connections by targeting high-priority maintenance/capital items. Purchasing agents and sales people can refer to test results when seeking to add equipment guarantees to contracts while the very same results can also be used by manufacturers and suppliers to validate their equipments performance. Just as important, engineers, maintenance, and operation s staff can use PTC 52 to evaluate the key components of their plants and plan improvements accordingly.The development of ASME PTC 52 will enable the solar-power industry to standardize performance testing and analysis effortsjust as other forms of power generation have already doneand further solidify its status, says Pastorik. That outcome will serve the committees larger objective enhancing solar powers viability as an alternative to fossil fuels.In that scenario everyones a winner.Marion Hart is an independent writer.Today, the U.S. Southwest is the site of 41 new CSP projectson tap to generate a combined total of 9 GWincluding some of the largest CSP projects to be built yet.