K'Tesh's OpenRocket Nosecone Library

chadrog · Jan 2, 2014

K'Tesh said:
This isn't perfect, but when I read about the A20 Demon NC, I was reminded of the Ramjet type of nosecones (PNC-55D). I don't have one to measure from, but I did find an image. I know that this is not accurate, but for the info I have, it shows what is possible with the method I've found for recreating designs.

If you're wanting one.
https://www.ebay.com/itm/BUILT-FLYING-MODEL-ROCKET-/380808751562?pt=Model_Kit_US&hash=item58a9f869ca

As a machinist of 21 years and counting specializing in four axis turning centers, I've never lathed anything.

K'Tesh · Jan 2, 2014

chadrog said:
If you're wanting one.
https://www.ebay.com/itm/BUILT-FLYING-MODEL-ROCKET-/380808751562?pt=Model_Kit_US&hash=item58a9f869ca

I don't need one (at least BT-55 sized). I just did it as a proof of concept.

K'Tesh · Jan 3, 2014

Semroc BNC-60YP

GregGleason · Jan 3, 2014

Good stuff K'Tesh!

You are turning into an OR Nose Cone Ninja! Or is it lathing ...

Well, no matter, just keep up the good work!

Greg

VonMises · Jan 3, 2014

Here's a rendering of the NC we made for Nuclear Fallout. Inspiration came from the Titan Missile.

K'Tesh · Jan 3, 2014

GregGleason said:
Good stuff K'Tesh!

You are turning into an OR Nose Cone Ninja! Or is it lathing ...

Well, no matter, just keep up the good work!

Greg

Thanks Greg!

Soon I'll be hitting the showers, so I'll be lathering

Here's another one for everyone... Estes PNC-55AC (Blow Molded) (Cherokee D, Defender, CC Express)

K'Tesh · Jan 3, 2014

Here's a concept that I have a question about... An ellipsoid version of the PNC-60AH?

K'Tesh · Jan 4, 2014

Today's entries...

Estes No. 072797 which I'm calling the PNC-55XTR (Extreme 12):

and Estes No. 072413 which I'm calling the PNC-2.5PTZ (Partizon, Ventris):

Mind you, I'm going off of what info I could find for the inner diameter, as I can't take a direct measurement of the ID to .001 accuracy

K'Tesh · Jan 4, 2014

Showing off? Perhaps....

This one I'm calling the Estes PNC-2.5JHK (Pro Series Jayhawk (2085)):

Couldn't find a part number or a real name for it. Like the other Pro Series nose cone, I'm not able to measure the shoulder to 100% accuracy, so it's a best guess.

K'Tesh · Jan 31, 2014

[EDIT] This simulation was done prior to me having a digital caliper, now that I have one, I've updated the .ork file. More on this can be found in my CamrocDV thread.[/EDIT]

This was originally posted in my Camroc Instruction thread...

Ok, here's a best guess at the dimensions of the Camroc's nose cone.

My only tools (besides Open Rocket), were my knowledge of body tube diameters, and a metal ruler. This is only to give an idea of the outside appearance of the nosecone, and can't be trusted to be accurate for internal dimensions. I've broken the Camroc down into its basic external parts, and color coded them for clarity.

Left to right: Plexiglass Window (unseen), Nose Cone, Main Body Section, Film Block, Film Retainer, Cover, Adapter

To hold it all together, each joint between parts (except the plexiglass window/nosecone joint) was taped with what appears to be a 1/4" wide piece of yellow vinyl (electrical) tape.

And here's an idea of what it looks like all black:

I'm thinking that for a quick and dirty simulation (the diameters would be off a little), the larger diameter pieces could possibly be faked with a pieces of a florescent tube protector, a BT-60, and some couplers. For the plexiglass window and the nosecone, I'm thinking of paper-mache over a balloon, and the clear window of a toy watch.

Of course, with a dimensional drawing, 3D printing would be able to handle the entire project. I've learned about a mechanical engineering club on campus, and haven't heard back from them yet.

Pointy Side Up!
Jim

K'Tesh · Feb 12, 2014

Working on an Apogee Diamondback... Thinking of a 2 stage/upscale mod... but for now their PNC-29A (blowmolded)(Apogee Diamondback, Aspire)

BTW, this is perhaps the nicest blowmolded nosecone I've ever worked on. It took next to no time to sand smooth.

K'Tesh · Feb 13, 2014

Binder Designs 2.6"OD x 13" Ogive (Blowmolded) (Dragonfly)

View attachment 162114

K'Tesh · Feb 16, 2014

Here's the Estes PNC-50V (blowmolded), it's the same shape as the PNC-50BB, just missing the tail cone... (Maverick, Meteor, Black Brant III, Stiletto, Black Hole Space Probe)

[EDIT] For those of you who love the rockets that use the PNC-55BB's tail cone (Yes, I'm looking at you TopRamen) I've managed to create a .ork file for the tail cone...

[/EDIT]

Here's my attempt at a PNC-50Y (blowmolded), it's not perfect, but it's the best I've been able to figure out. (Note: This is the older one piece PNC-50Y, and not the newer two-piece injection molded version.) (Sizzler (1906), Gamma, Icarus, Comanche 3)

And here's the PNC-50Y/PNC-50YR (2-Piece, Injection Molded) (Note: this is the newer two-piece injection molded version.) (Sizzler (1906), Gamma, Icarus, Comanche 3)

K'Tesh · Feb 24, 2014

Today's eggsdition... No yolking! It's the BT-56 based Estes Eggspress/Scrambler nosecone (also used for the Enerjet Egg Crate). I couldn't turn up a part number for it*, but here it is.

BTW, according to Wikipedia, a Large Egg (US Grading) is greater than 2oz or equal to 2.25oz

[EDIT] I just remembered something that I forgot... I wish I knew that the Estes Scrambler/Eggscalibur nosecone (originally from the Enerjet Egg Crate), was not pre-sized for the Jumbo Egg. If you want the egg to fit inside that payload compartment, you need to trim the edges of the shoulder to allow for it to fit. Fortunately the problem was realized before I went out to the field, the egg was inside a plastic bag, and I remembered that very important saying...

Don't put all your eggs in one basket.[/EDIT]

*When I asked John Boren about this nosecone (10/31/2019), he was able to look it up for me. However, the information he had is for the white High Impact PolyStyrene (HIPS) version found in modern TARC parts assortments, and not the yellow polyethylene version found in the Eggspress and Scrambler kits. The official designation is PNC-13E, Part number: 071050. It is not sold separately.

K'Tesh · Feb 26, 2014

My favorite single color for putting in the sky has to be red... For that reason, I thought that this Estes BT-60 based Rocket Red Crayon nosecone would be appropriate (normally, I wouldn't touch a RTF with a 10 meter cattle prod).

K'Tesh · Mar 1, 2014

Ok, now that I've got an Argent, it's time for it to be added to the roster. This is Estes No. 072653 which I'm calling the PNC-2ARG

IMPORTANT NOTE: In the following two simulations, If you want to add a body tube to the front, you'll need to add one to the end, then use "Move Forward" to get it into the correct location. The images will not look like the .ork files when downloaded (the shoulders will have sharp edges). The image was created with visual accuracy in mind, and not functionality. The .ork has been corrected to allow for ease of use.

Due to the limitations in Open Rocket, I had to create two transitions (one for each orientation).

The Estes Plastic Tube Adapter (No 072657) 2in to 2.5in (Argent)

The Estes Plastic Tube Adapter (No 072657) 2.5in to 2in (Ventris)

Mr Rocket · Mar 1, 2014

These are really cool! Have you considered contacting Kevin or Sampo to have them incorporated into the OR parts database? :cheers:

K'Tesh · Mar 1, 2014

Mr Rocket said:
These are really cool! Have you considered contacting Kevin or Sampo to have them incorporated into the OR parts database?

Kevin and I have exchanged posts... I think he's trying to figure out how to make these complex shapes into something you can "pull-off-the-shelf".

Have you seen the tutorial I made?

K'Tesh · Mar 1, 2014

IMPORTANT NOTE: In the following two simulations, If you want to add a body tube to the front, you'll need to add one to the end, then use "Move Forward" to get it into the correct location.

Ok, today's transitions got me thinking about transitions... Here's Estes Plastic Tube Adapter No. 066633 (BT55 to BT60)(Extreme 12):

and it's mirror Estes Plastic Tube Adapter No. 066633 (BT60 to BT55):

K'Tesh · Apr 24, 2014

Today's addition... The PSII 3" OD based: Estes Part No. 072695 (blow molded) (Leviathan, Big Daddy). I know that it looks "squat" but that is an issue with OR's 3D rendering. Look at it in the Side view, and it looks accurate.

K'Tesh · May 17, 2014

Today's addition is the Estes PNC-80K (part no. 71035) (blow molded). It's used in the Estes Optima (2035), The Shadow (2094), V-2 (3228), Phoenix (1380), Maxi Alpha 3 (1321) etc. rockets.

Now, I know that this looks to be a bit squat, but that is a distortion in OR's 3D rendering. If you look at the attached file in "Side view" the nosecone will be accurate (especially when sighting down the nosecone at the image behind it).

The .ork has the nosecone simmed to the back edge of the shoulder, before it tapers back to the rear cone shape.

K'Tesh · Jul 13, 2014

Ok... Dunno why it took so long for me (or anybody else) to create a file for this one... Rejoice! Goony and Big Bertha fans... It's Estes' PNC-60L.

(Mind you this is the later one-piece, blow molded version, and not the older two-piece, injection molded version.)

K'Tesh · Jul 17, 2014

Today we have a pair of BT-80 based nose cones...

The Estes Part No. 072080 (Mega Mosquito)

and The Launch Pad's TLP-26L:

[EDIT] I also created the PNC-50Y (2-Piece, Injection Molded) Nose cone, but edited it into post #43, as it was a more natural fit there.[/EDIT]

.

K'Tesh · Jul 18, 2014

Today I have the Estes PNC-50K Fat Ogive (Blow Molded). This is the nose cone that I got with my Alpha back in the 80's. I've read that they've since changed the shape, but don't have an example of the new nose cone.

[EDIT] Ok, I've got the nosecone that Estes is now using for the Alphas they're making these days. Estes' PN 071028.

Unlike the previous version, this one is an ogive, and not a fat ogive.[/EDIT]

Accidentally deleted the PNC-50K File at 14 downloads

K'Tesh · Jul 18, 2014

I decided to change the name of the thread to make it more accurate to what it is... This is a resource for people to find accurate nose cone shapes. Hopefully those who have nosecones that I don't have will add theirs to the mix.

All the Best!
Jim

K'Tesh · Jul 18, 2014

And now for something completely different...

Quest's Nike Smoke nose cone (part numbers 20201 and 20202):

morlock · Jul 18, 2014

Thanks for your great work!

I'm wondering, is there is a webpage where we can get them all in an organized fashion? Some sort of repository of nose cones?

K'Tesh · Jul 18, 2014

morlock said:
Thanks for your great work!

I'm wondering, is there is a webpage where we can get them all in an organized fashion? Some sort of repository of nose cones?

Glad you like them!

At this time, your looking at the only webpage we've got (other than the flickr album for the images).

K'Tesh · Jul 19, 2014

Here's another one... This is the Estes PNC-55EX (p/n 071031) (Exocet (1925), Neptune (1935), and Ranger (1955)). This shape isn't perfect, but it's the best I could come up with.

morlock · Jul 19, 2014

If I look for options to host them, would that be OK for you? I could set up GitHub repository or a WordPress page or Google site...

K'Tesh's OpenRocket Nosecone Library

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