Thanks to everyone who participated! There were so many unique solutions for this tough, mechanical challenge. We believe these winners are the best solutions. We took an in-depth look at all of the technical specifications and how each entrant performed in those areas. You'll see a rating for Number of Prints and Number of Parts. These along with the rest of the technical criteria were used to determine the rankings. Congratulations to all of the winners and to all of those who participated in this challenge!
We developed the Center of Excellence for Collaborative Innovation so we could work with groups like GrabCAD, which has almost 2 million members, and tap the creativity of the world to solve tough engineering problems. Using innovators to contribute to solutions to technical challenges is playing a crucial role for NASA in developing the technologies needed for humans to become Earth-independent and pioneer missions to Mars and other deep space destinations.
We, at NASA, were overwhelmed with both the quantity and quality of the submissions for the NASA GrabCAD Challenge! Going into this, we were confident that we would benefit greatly from the experience that this broad community of talented designers brings to the table, but we were extremely impressed with the level of interaction, creativity, and iterations that took place within the community throughout the challenge process. The capability to exchange technical ideas and gain feedback during the challenge was as impactful as the submissions themselves. NASA hopes to have the opportunity to utilize this high-value, high-impact collaboration mechanism more in the future.
Last year, NASA manufactured the first parts ever made in orbit. But to be successful, we need to do more than make parts in space. Deep space explorers will have to be able to design parts for use in different environments, and the GrabCAD community can help NASA learn how to optimize designs.
The design provided an exciting approach to single build, easy attachment, easy removal, seat track strengthening and minimal material usage. While the seat track design is missing the center hole (easy modification) needed for proper attachment of mating components, the simple increases to the seat track strength look promising. The design may have some weak spots that would need to be addressed before a final version, but the concept and initial execution were intriguing. Easy to build and assemble. Good material optimization.
Number of Builds: 1
Number of Parts: 2
While the clamp design did not perfectly recreate or focus on a redesign of the seat track, it did provide a unique solution regarding handrail attachment with adjustability. The threaded bolt entails a clever design feature that allows it is be easily built in the xy direction for superior strength over a z-axis printed bolt. The design might require adjustment in order to print the female threads without support material, but the concept is promising. Excellent Bolt design. Strong Clamping.
Number of Builds: 1
Number of Parts: 2
We like that this design does not require support material. The design is very well done in terms of removal and installation. The wedging effect allows for multiple uses with adequate clamping. The design provides an interesting attachment method to the handrail that has adjustability by further sliding the two parts relative to each other. The removal of the clamp is also facilitated by the tab on the red bottom slider. While the seat track does not appear to be design strengthened, the handrail clamping design does not prevent seat track modifications.
Number of Builds: 1
Number of Parts: 2
The simple design has many attractive design features that set it apart. Above all is the cleverly increased strength of the seat track interface, this design appears that it would provide the most strength at the seat track interface than any other. It is a very elegant solution to strengthening the seat track interface. While the ratcheting handrail clamping design allows for adjustability, it may be difficult to remove the clamp once installed. Even linearly sliding the two apart along the handrail axis may be very difficult once a full clamping force is applied.
Number of Builds: 1
Number of Parts: 2
Interesting attachment method, needs some refinement, but has potential. The build direction proposed by the designer is not possible without support material, but the adjustability of the clamping force through tightening the nut creates a very flexible concept with some minor improvements needed.
We like the concept of the adjustment flexures and single handed operation of this unique design. Neat use of design in "custom" infill that is controlled at the designed CAD level allowing for infill variation that is not possible with traditional infill settings on 3D printers.
A strong design for both clamping and seat track interface. The parts are well designed as they require no support material. The assembly is not too difficult but the building of the hinge pins may be a failure risk.
While the design did poke out of the one inch cross section in one spot the clever seat track strength improvements were very interesting. The symmetrical nature of the part was also an added benefit, not only did you have to locations to attach a seat track item but if one side failed you could use the other while a replacement was being printed. Even though the part has some issues with fitting into the build volume, there are easy reductions that could be made to allow for printing without support material and build height.
The potential ease of installation was a nice feature of this design although, some tolerancing is needed to tweak the sliding components for easier installment. The ability to adjust the clamping force is a nice feature although the design does have a weakness in the "loosen" direction.
This is a good design for strong clamping, providing a simple but effective solution to the problem. However, the building of the screw as indicated in the x,y orientation will be hard to accomplish without supports as designed.
The design showcased an interesting attachment method which relied upon a device to be installed onto the clamp in order to secure it to the handrail. The device could be difficult to attach to a handrail in micro gravity because the clamp cannot stay attached by itself, one would have to hold the clamp in place, have the device to be attached in hand, and then attach the device to the clamp while not floating away (not impossible but probably difficult). The lack of adjustability in the clamping force would have to be overcome through very specific tolerancing, again not impossible but not ideal. The build direction of the center pin may be a failure point of the design.
This is an excellent design for strength and provides a solid connection to the rail as well as a strong seat track interface. However some of the individual clamp pieces will be difficult to build without supports and assembly will be hard to do in zero-g.
Very clever use of the handrail as the backstop for the seat track interface. Minimal material use through seat track modifications. Would need some minor modification in order to print without support material.
If you don't receive the email within an hour (and you've checked your Spam folder), email us as confirmation@grabcad.com.