SpinOffs

   

Radial Compressor Geometry Primer - Video Blog

by Mark R. Anderson on Nov 30, 2018 10:01:00 AM

Below is a 4 minute video blog from Mark Anderson, Concepts NREC's Chief Technology Officer, on the geometry of radial compressors. In it, he details the various parts of the compressor wheel, including the inducer, splitters, backsweep, etc. He also looks at open and closed (shrouded) impellers and the pros and cons of each design.

 

Click on the image below to launch the full-size video.

20 Great Gifts for Engineers from $10 to $2 Million

by Barbara Shea on Nov 23, 2018 9:28:00 AM

Gifts for Engineers can usually be segmented into a few categories: Things you have to put together, science fiction, gaming, new technology, and witty phrases printed on stuff. A Google search of the term "Best Gifts for Engineers" will quickly validate this claim.

Site Selection for Low- and No-Head Hydroelectric Pilot Plants

by Andrew Provo on Nov 15, 2018 2:42:37 PM

According to the 2014 Oak Ridge National Laboratory study on untapped hydro-power potential, there is nearly 65 GW of untapped power in America’s waterways. The vast majority of this power remains undeveloped for many reasons, both environmental and commercial. One major impediment to the realization of this potential is the significant infrastructure required to install a conventional hydroelectric facility. The commercial and environmental cost of dam construction often makes the development of small-scale (50 kW–500 kW) hydroelectric installations untenable.

Material Properties  - What Really Matters?

by Kevin Fairman on Nov 9, 2018 10:36:00 AM

As an engineer in the rotating machinery world, it is my job to design things that work for a very long time. To help ensure this, we have evolved the best analytical tools to calculate the stresses and deflection of the parts we have so carefully designed. But sometimes, we lose track of what matters. We know that material strength, weight, stiffness, toughness, thermal conductivity and thermal growth all matter. They are in a material database, so they must.

Gas Turbine Automobiles - Yesterday, Today and Tomorrow

by Francis A. Di Bella, P.E. on Nov 2, 2018 9:58:38 AM

Credit for the first gas turbine engine used in flight is given to Dr. Frank Whittle.  Dr. Whittle maintained a steadfast commitment to developing gas turbine-powered aircraft in the midst of World War II when England was being attacked by Germany’s conventional aircraft bombers. While the gas turbine aircraft wasn’t developed early enough to impact WW ll, the interest in increasing the speed of aircraft continued to spur development for use in commercial as well as military planes. The advancements in gas turbines, combined with rapid advances in several technologies, including rocketry, computers and material sciences, contributed to the dawn of the Space Age.

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