3D Printing Boosts Rocket Project for Engineering Students

University of Minnesota engineering students are readying a 3D-printed rocket engine for launch sometime later this year, with help from Proto Labs.

This cutaway view of the engine shows the cooling channel, which is one long tube that spirals down inside the wall.

David Deng, a senior aerospace engineering student at the U of M’s Twin Cities campus, is leading the extracurricular effort to design, build, and eventually fly a liquid-propellant rocket as project manager of LPRD Rocketry. The group’s name, pronounced “leopard,” is an acronym for Liquid Propellant Rocketry Design. The group includes aerospace engineering students and others studying electrical engineering, computer science, mechanical engineering, and materials science.

The primary design challenges the group faced included the small overall size of the engine itself, and the need to also somehow incorporate a cooling system inside the engine.

David Deng (right), and the University of Minnesota student group LPRD Rocketry (left).

“The manufacturing of [the rocket engine] is incredibly difficult using conventional methods, especially for a very small engine,” Deng said. “The struggle was how do we [add] a single cooling channel through this entire engine, coiling around the side of it? That’s where Proto Labs came in. 3D printing is essentially the only way to get regenerative cooling on an engine this small and have it be a single channel.”


2015 Manufacturing Trends

Last year was pretty big for the American manufacturing industry. Milestones both big and small made headlines: the White House hosted a Maker Faire; scientists achieved firsts in 3D printing technology by printing living human tissue and printing in zero gravity; President Obama announced his commitment to supporting American manufacturing through the creation of research hubs in key U.S. cities; a resurgent labor market has continued to fuel an “onshoring” trend with manufacturing jobs returning stateside; we figured out how to 3D print pizza, chocolate and sugary treats.

3D-printed chocolate confections are a real thing. Photo by Choc Edge.

As important as all of the strides made in the U.S. manufacturing space were in 2014, we’re most excited about what might be around the corner. We’re confident this is only the beginning of an exciting new era in our industry. Here are a few trends we’re keeping an eye out for this year: Continue reading