SpinOffs

A blog on what's new, notable, and next in turbomachinery

Posts about Pumps

How Does Rocket Engine Cycle Selection Impact the Design of the Associated Turbopump Assembly?

How Does Rocket Engine Cycle Selection Impact the Design of the Associated Turbopump Assembly?

By Kerry Oliphant,
Jul 30, 2021

For lower thrust rocket engine designs, either a Gas Generator (GG) cycle or a Dual Expander (DE) cycle can be considered, among others. While each of these cycles has its inherent advantages and...

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How Many Pieces of Turbomachinery (Fans, Blowers, Compressors, Turbines, Pumps) Do You Have in Your House? Part 2

How Many Pieces of Turbomachinery (Fans, Blowers, Compressors, Turbines, Pumps) Do You Have in Your House? Part 2

By Daniel V. Hinch, Corporate VP Sales and Marketing, Concepts NREC
May 14, 2021

In my last blog I wrote about visiting a local middle school to give a talk on ‘What is Turbomachinery, and How Does It Work?’ The quiz at the end of the talk was for the students to list all the...

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How Many Pieces of Turbomachinery do You Have in Your House?  (and a Pop Quiz)

How Many Pieces of Turbomachinery do You Have in Your House?  (and a Pop Quiz)

By Daniel V. Hinch, Corporate VP Sales and Marketing, Concepts NREC
Apr 16, 2021

On occasion I’m invited to a local middle school to give a talk to one of the science classes about ‘What Is Turbomachinery, and How Does It Work?’. I teach in several of the turbomachinery design...

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What’s So Hard About Designing A Pump?

What’s So Hard About Designing A Pump?

By Daniel V. Hinch, Corporate VP Sales and Marketing, Concepts NREC
Oct 6, 2020

Here at Concepts NREC, we work on a wide range of turbomachinery components designed for fluids ranging from gases to liquids, including supercritical fluids like supercritical CO2 which have...

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Top Five Coolest Turbomachinery Applications

Top Five Coolest Turbomachinery Applications

By Barbara Shea
Oct 4, 2018

Most people have no idea what turbomachinery is, but some of the coolest things on (or off) this planet involve turbomachines. Here are my picks for the top 5.

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The Slip Factor Model for Axial, Radial, and Mixed-Flow Impellers

The Slip Factor Model for Axial, Radial, and Mixed-Flow Impellers

By Mark Anderson and Chanaka Mallikarachchi
Jul 20, 2018

Ideally, the exit flow angle for an impeller should be the same as the exit blade metal angle. However, the exit flow angle deviates from the blade guidance at the impeller exit due to the finite...

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Optimizing the Screw Inducer for a Pump

Optimizing the Screw Inducer for a Pump

By Oleg Dubitsky
Feb 16, 2018

High-efficiency, low-cavitation pumps often require a screw type inducer to treat the inflow to the main radial/mixed flow pump blades. Efficiency and head rise, split between inducer and main pump,...

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Getting to the Root Cause of a Catastrophic Impeller Failure

Getting to the Root Cause of a Catastrophic Impeller Failure

By George C. Zitka, P.E.
Oct 27, 2017

Finding the root cause of a failure by narrowing down multiple overlaid symptoms can be a long and tedious process—and very often the true underlying problem is not what one might expect by a casual...

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Turbomachinery in Fire Fighting

Turbomachinery in Fire Fighting

By Mark R. Anderson
Oct 5, 2017

I was a firefighter (we never call ourselves firemen) for more than ten years. While this was only a part time, volunteer gig, I was a turbomachinery developer and modeler as my full-time job....

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How to Design a Pump for Reduced NPSH

How to Design a Pump for Reduced NPSH

By Kerry Oliphant
Jun 20, 2017

Cavitation occurs in a pump when the bulk liquid pressure starts to approach the vapor pressure of the liquid, and cavities of vapor form as seen in Figure 1. This figure shows the inlet of a...

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Current Issues Facing the Global Pump Industry

Current Issues Facing the Global Pump Industry

By Robert Platt
Nov 3, 2016

The Global Pump Industry

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Extremely High Suction Performance Pump Inducers

Extremely High Suction Performance Pump Inducers

By Concepts NREC
Sep 1, 2016

The path to better operation stability and robustness High suction performance pump inducers are critical to important industrial and advanced aerospace applications where the required inlet pressure...

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