3D Printing service and rocket pics

Hi,

We have designed and printed a rocket lower section this weekend to use a Cesaroni 38 MM casing this. I ordered some 63 MM air frame from LOC and will use the nosecone and recovery components from our other LOC rocket. We also flew our entirely 3D printed rocket on a Estes E12-4. The tape on that rocket was only due to us rushing to fly it the compression fit was good but needed a bit of glue. Great flight!
We are going to be designing and printing some custom camera mounts and other items. If anyone has some 3D printing design and printing requests let me know I could help out. I design custom machinery using Solidworks full time.

Thanks

Hi,

Sorry I meant to post this in the 3D printing section. If a moderator sees this could you please move it. Thanks

Nice print - have you thought about uploading the design to Thingverse.

Thanks. No I never thought of it. I really do not go on Thingverse very often. Kind of curious to see how much speed the fins can handle. 200 MPH, 300 MPH should be interesting?

If you send me the STL file, I will print and test them with an H550 and I800.

Although, I would print them in CF ABS or PETG.

I am curious as to how well the MMT handles the heat transfer. Possibly some sort of insulating barrier will save you a bit of melted mess.

mpitfield said:

I am curious as to how well the MMT handles the heat transfer. Possibly some sort of insulating barrier will save you a bit of melted mess.

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Good point.

The fincan would certainly melt/soften from the motor casing. That is why I always use a motor tube to help insulate my 3D printed fins/transitions. As for speed, I believe that you would have flutter issues at high speeds due to the large fin span. My 3D printed fins with carbon fiber rods epoxied into them have made it up to around 500mph and I'm confident they could reach mach 1+ on a fiberglass airframe. Without the carbon fiber rods I wouldn't feel comfortable going over 200-300mph.

My recommendation would be to use a motor tube and reduce the fin span to around one body diameter. Good looking designs though and I can't wait to see what else you come up with.

Great info everyone. Thanks, Yeah the heat was my main concern. Just wanted to get something printed to see how the new printer would handle some taller prints. I agree some sort of insulation or separation may be needed.

I was actually thinking of just using some thin ribs to locate the aluminum casing for very little contact and even some louvers on the side of the body open to the outside could direct some air inside and onto the casing. This would allow some airflow so I am wondering if there would be any issues at all.

Ill make some changes to the design and post some updated pictures.

Thanks

Ryan Gillette said:

I was actually thinking of just using some thin ribs to locate the aluminum casing for very little contact and even some louvers on the side of the body open to the outside could direct some air inside and onto the casing.

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I would keep it simple and purchase some paper MMTubes that are longer than the longest anticipated motor hardware. Then I would slide them in from the bottom and make sure that the hole wasn't a tight fit until the top, where I would use a slight taper to retain the tube.

cwbullet said:

If you send me the STL file, I will print and test them with an H550 and I800.

Although, I would print them in CF ABS or PETG.

Click to expand...

Hi cw, Yes I can send the STL file to you. Maybe wait until i add the motor mount tube liner as was suggested or make some changes. Also I had the B in the side for my Daughter as she wanted this to be hers I can change it or remove it up to you.

Also I was wondering if just some high temp anti seize would do the trick.

Thanks

Had a little fun tonight with some designs to flow air between the motor case and the body. Very little contact surface and I would think lots of airflow. Larger out than in. Guessing it would reduce speed some but it does look interesting. Would be interesting to see how it works. I may adjust the inlets to be more of a hidden louver type and not in the direct airflow but this may also be OK. I will try printing something next week when I have time and give it a shot. If someone wants the STL to give it a try just send me a message. Body tube is a LOC 63 MM and the nose cone is from a LOC Graduator. I have not calculated the C.P. The C.G. is with no motor or recovery items, but does have the motor retainer included. I have it shown in the image below. Let me know what you think.

Yeah I know, not keeping it simple but it definitely will get some attention, good and bad .

Also I ordered some MMT material to use on the next round if this does get the plastic to hot.

Thanks

Interesting design, looking forward to see how it works out. The scoops may be too small, and therefore ineffective in the stream, but I like your line of thinking. I considered a full scoop like that of the cruise missile, or a variant there of.

Yeah not sure how large they need to be. I think a small amount of airflow would keep things cool. Possibly the exits near the motor exhaust will create a draft through durring thrust. Will be fun to see how it works.

Thanks for the comments.

Ryan Gillette said:

Had a little fun tonight with some designs to flow air between the motor case and the body. Very little contact surface and I would think lots of airflow. Larger out than in. Guessing it would reduce speed some but it does look interesting. Would be interesting to see how it works. I may adjust the inlets to be more of a hidden louver type and not in the direct airflow but this may also be OK. I will try printing something next week when I have time and give it a shot. If someone wants the STL to give it a try just send me a message. Body tube is a LOC 63 MM and the nose cone is from a LOC Graduator. I have not calculated the C.P. The C.G. is with no motor or recovery items, but does have the motor retainer included. I have it shown in the image below. Let me know what you think.

Yeah I know, not keeping it simple but it definitely will get some attention, good and bad .

Also I ordered some MMT material to use on the next round if this does get the plastic to hot.

Thanks

View attachment 372350 View attachment 372351 View attachment 372352

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Hi,

I finally flew this last weekend. Flew great and no issues with heat so far. The case barely touches the body so I am hoping for a long life.

Thanks

Very nice!