3D Printing things that make you go hmmmm

[jbr]

 

[dr wogz]

details?!

 

[jbr]

3d printed fin can on 5.5" blue tube
initials and date on each fin, I designed it and printed it and can prove it
it is very strong
LDRS plans 1st flight on an L1700 4400NS

the rocket is designed to take a 54" long N4000 16000NS motor

 

[Nytrunner]

3/8" fins? What's the material?

 

[dr wogz]

What screws / hardware are holding them together?

 

[mpitfield]

3d printed fin can on 5.5" blue tube
initials and date on each fin, I designed it and printed it and can prove it
it is very strong
LDRS plans 1st flight on an L1700 4400NS

the rocket is designed to take a 54" long N4000 16000NS motor

No disrespect intended, I am sure that your are aware that there is a big difference in the fin design requirements between using an L1700 and N4400 launch. Is it your intention to "prove" the design validly of this fin design for a N4400 launch with the L1700 launch?

Good luck on this, sincerely I would love to see more 3D printed components.

 

[manixFan]

Hmm, interesting. Using an 'upswept' trailing edge might make them less likely to break on landing but you'd need supports during printing. Would also be nice to try a diamond airfoil to see how well that would print. Both of those modifications should also reduce the likelihood of flutter. I really like that it would be easy to replace a damaged fin.

How rigid is the assembled structure? Does the 'roundness' deform if you grab opposing fin tips and really flex them? Obviously when it's over the body tube that will add some support. Based on material, heat might be an issue if it was used on a MD rocket. Overall a neat concept.

Please keep us posted on your results.


Tony

 

[Wallace]

That is certainly an interesting design.