Search: Posts Made By: olnico
Showing results 1 to 25 of 500
Search took 2.05 seconds.
Forum: RC Jets
02-18-2019, 10:49 AM
Replies: 26
Views: 972
Posted By olnico

This is what I have done with the Crusader. The...

This is what I have done with the Crusader. The principles of convection cooling are used to their full extent on this plane, along with a full bypass system.
As you said, it is a very cool...
Forum: RC Jets
02-17-2019, 05:18 PM
Replies: 26
Views: 972
Posted By olnico

Here is the second part of the technical...

Here is the second part of the technical discussion about heat management.
As a reminder, you can read the full article on my technical blog here:
...
Forum: RC Jets
02-17-2019, 05:13 PM
Replies: 26
Views: 972
Posted By olnico

Paint is more heat resistant than most epoxy/...

Paint is more heat resistant than most epoxy/ polyester resins.
If you see your paint bubbling/ changing color from internal heat transfer, then you have reached destructive temperature on your...
Forum: RC Jets
02-17-2019, 05:09 PM
Replies: 26
Views: 972
Posted By olnico

Not necessarily. Hence the distinction between...

Not necessarily. Hence the distinction between conduction, convection and radiation.
You can have a relatively mild skin temperature ( convection cooling ) and internal components melting due to...
Forum: RC Jets
02-17-2019, 05:03 PM
Replies: 2
Views: 570
Posted By olnico

Many more developments will be coming from this...

Many more developments will be coming from this project soon...
Forum: RC Jets
02-16-2019, 04:17 PM
Replies: 26
Views: 972
Posted By olnico

I have done 2 passes on the ceramic blanket and 1...

I have done 2 passes on the ceramic blanket and 1 pass on the glass skin.
Waited a bit after the first pass on ceramic, during that time sprayed the fuselage, then did the second pass on the...
Forum: RC Jets
02-16-2019, 10:58 AM
Replies: 26
Views: 972
Posted By olnico

Depends if you have any air flow streaming on the...

Depends if you have any air flow streaming on the ceramic blanket.
If not, glue the smooth side on the fiber. You will use less glue.
Note that I tried the regular Permatex spray and it works well...
Forum: RC Jets
02-05-2019, 11:42 AM
Replies: 26
Views: 972
Posted By olnico

It looks like it is the exact same product...

It looks like it is the exact same product without copper.
I will try it, but have no means of comparing with the copper one.
Let me know from your side,
Thanks.
Forum: RC Jets
02-05-2019, 09:29 AM
Replies: 26
Views: 972
Posted By olnico

Thanks for the kind words!

Thanks for the kind words!
Forum: RC Jets
02-05-2019, 09:28 AM
Replies: 26
Views: 972
Posted By olnico

Actually, this one might be slightly better for...

Actually, this one might be slightly better for our applications:
https://www.permatex.com/products/gasketing/gasket-sealants/permatex-high-tack-spray-a-gasket-sealant/

It is the same product,...
Forum: RC Jets
02-05-2019, 09:23 AM
Replies: 26
Views: 972
Posted By olnico

Nice find! Thanks, Joe. I will give it a try....

Nice find!
Thanks, Joe. I will give it a try. 500F should be sufficient for most applications.
Forum: RC Jets
02-04-2019, 07:56 PM
Replies: 26
Views: 972
Posted By olnico

Also, a word of caution with aluminized foils. ...

Also, a word of caution with aluminized foils.
Aluminum is a high reflectivity material. However it is a good heat conductor.
So it should be used where high radiation transfers are a concern, but...
Forum: RC Jets
02-04-2019, 07:51 PM
Replies: 26
Views: 972
Posted By olnico

Ceramic is usually white ( good reflectivity )...

Ceramic is usually white ( good reflectivity ) and has a high service temperature. It is also a poor heat conductor.
So in theory, it is a great material for insulation. However one word of notice....
Forum: RC Jets
02-01-2019, 07:01 PM
Replies: 26
Views: 972
Posted By olnico

This depends on the shape of the structure/ skin...

This depends on the shape of the structure/ skin around it.
On circular shapes with a radius close to the bladder balooned state ( full ), then velcro strips around the bottom work well.
If the...
Forum: RC Jets
02-01-2019, 01:23 PM
Replies: 26
Views: 972
Posted By olnico

Heat management considerations and accessories.

Dear all,

Following the release of my article about heat management

https://www.ultimate-jets.net/blogs/jet-building-techniques/heat-management-in-jet-powered-uavs-and-models

I wanted to...
Forum: RC Jets
01-25-2019, 03:10 PM
Replies: 23
Views: 1,163
Posted By olnico

Yes, Matt. The push-to-connect fittings are at...

Yes, Matt.
The push-to-connect fittings are at the top of the pocket. They do not show on this drawing.
For info, on the 166, the screw cap used is the same as our Cloudtech tank stopper....
Forum: RC Jets
01-25-2019, 08:20 AM
Replies: 23
Views: 1,163
Posted By olnico

3D printed bracket with a stopper at the bottom. ...

3D printed bracket with a stopper at the bottom.
Looks like this.

https://cdn.shopify.com/s/files/1/0152/1643/files/20190125_200109_grande.jpg?v=1548432998

Standard bracket is made from nylon,...
Forum: RC Jets
01-25-2019, 03:54 AM
Replies: 327
Views: 35,464
Posted By olnico

Were you not at JOK where the team did 7 demo...

Were you not at JOK where the team did 7 demo flights with Ali at the sticks?
Forum: RC Jets
01-24-2019, 11:26 AM
Replies: 327
Views: 35,464
Posted By olnico

OK, that's the dark Euro camo. Now I can see the...

OK, that's the dark Euro camo. Now I can see the dark green patch behind the canopy...
Nice one! must have been a blast to fly these...
Forum: RC Jets
01-23-2019, 11:29 PM
Replies: 23
Views: 1,163
Posted By olnico

Here is a picture of the VaccuTest system. ...

Here is a picture of the VaccuTest system.

https://cdn.shopify.com/s/files/1/0152/1643/files/vaccu-trap_detail_large.jpg?v=1548314611

It is a cost effective method to test the level of vacuum...
Forum: RC Jets
01-22-2019, 09:19 PM
Replies: 327
Views: 35,464
Posted By olnico

Amazing picture! I am surprised to see that...

Amazing picture!

I am surprised to see that the nomenclature was in black over and engine grey paint.
What squadron was this?
Forum: RC Jets
01-22-2019, 04:33 PM
Replies: 327
Views: 35,464
Posted By olnico

Thanks. I am quite happy to see how the pylons...

Thanks.
I am quite happy to see how the pylons came out once fitted on the plane.
I had the pylon side view blueprint, but not the cross sections. I think I got the shape of the pylon front pretty...
Forum: RC Jets
01-22-2019, 01:00 AM
Replies: 23
Views: 1,163
Posted By olnico

Yes, either push-to-connect with OD 4 mm or...

Yes, either push-to-connect with OD 4 mm or barbed with ID 4 mm.
Forum: RC Jets
01-22-2019, 12:58 AM
Replies: 23
Views: 1,163
Posted By olnico

Yes. 60 mm long, 50 mm high. I am editing...

Yes. 60 mm long, 50 mm high.
I am editing drawings for all 4 sizes and i will put them on the product page.
Forum: RC Jets
01-22-2019, 12:56 AM
Replies: 327
Views: 35,464
Posted By olnico

Y racks, sidewinders, pylons and Mk-84 bombs (...

Y racks, sidewinders, pylons and Mk-84 bombs ( plug in black gloss ). Now we're talking !
...
Showing results 1 to 25 of 500
 


 
Forum Jump

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service