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Old 10-01-2012, 03:35 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default Warning...

The new version has a serious bug in the 3D section. It will lock up the program (not the computer, thankfully) and generate a continuous-loop exception error.

This bug may only affect certain systems. I am running Linux Mint 13 x64 ("Maya") on a dual-core Athlon 64, with an nVidia GT520 graphics card. It may also be related to the version of JAVA; I'm using OpenJRE 1.6, but I'll try the newer 1.7 release and post later.
Craig McGraw

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Old 10-01-2012, 03:47 PM
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DaveR DaveR is offline
Master Modeler
Join Date: Apr 2006
Location: North MS
Posts: 836

I had to update my graphics driver in order for the newest version to run, which needed to be done anyway. No problems now - other than the 3D feature is a bit of a resource hog.
Fire is the leading cause of fire.
Was once SAM#0132
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Old 04-26-2020, 07:59 AM
CarlosMc CarlosMc is offline
Junior Rocketeer
Join Date: Aug 2016
Posts: 8
Default OpenRocket "custom expressions"

Our club president, Tim C., sent me this "".ork" file which features "parabolic foreward fuselages" and "ogive aft fuselage," There are compaund nose cone parts, and nose cone rings, which I don't find in my version of OR (15.03, I believe).

I found that if I go up to "tools," I can click "custom expressions," but I don't see any of these above mentioned custom expressions. So how do I access them when I am designing my own rockets? I have tried.

When I click custom expression, a blank grau box appears, with a "new expression" button. I click that, in the upper left corner of OR, another balloon appears with multiple entries possible" expression, operator, varible, symbol, and units. if I place my cursor in certain boxes, a table appers with a list of functions and operators - but I am not sure how they work, what they do, how to use them, what order do I put them, etc.

Do I need to go back to school to learn programming?

Last edited by CarlosMc : 04-26-2020 at 08:02 AM. Reason: Want to add attachment
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Old 04-26-2020, 08:09 AM
CarlosMc CarlosMc is offline
Junior Rocketeer
Join Date: Aug 2016
Posts: 8

I want to upload the ".ork" file for "The Rocket
Formerly Known as Black."

It looks likeits done.

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File Type: ork trfknab (7).ork (3.2 KB, 5 views)
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Old 04-26-2020, 07:33 PM
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GregGleason GregGleason is offline
U.S. Manned Space Program Buff
Join Date: Mar 2009
Location: Houston
Posts: 1,298

Wow. Talk about reanimating an old thread.

I would say post the question on TRF. The Rocketry Forum has way more users familiar with the program.

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Old 04-27-2020, 08:10 AM
aeppel_cpm aeppel_cpm is offline
Join Date: Apr 2013
Location: Burlington, WI
Posts: 619

Itís possible the creator of the file was using a version of OpenRocket after 15.03. There are unreleased test versions if you know how to compile them. A few of the beta testers have shared them. None have gotten bug free enough to release generally.
Charles McGonegal
AEppelTreow Winery & Distillery
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Old 05-13-2020, 11:51 AM
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neil_w neil_w is offline
Mr. Cut-by-hand
Join Date: Nov 2015
Location: Northern New Jersey
Posts: 428

The file CarlosMC posted up there opens fine in the current release version of OR, It's a bit rough (the fins especially) but probably close enough.

I don't see anything custom in it, just an assortment of nose + transitions using standard options.
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