V0.19: Gas Turbine Engine for RC Aircraft
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V0.19: Gas Turbine Engine for RC Aircraft
This is a small gas turbine engine for use in radio controlled (RC) model aircraft. The engine was designed and developed by Kurt Schreckling in 1992. It is remarkably simple design that can apparently be created using basic machine shop tools by experienced RC hobbyists using readily available materials.
This is a good PartDesign project for intermediate level users. Although the assembly is quite simple it requires the use of most of the basic workbench tools. My FreeCAD model is based on Schreckling's plans found in his book at https://rclibrary.co.uk/title_details.asp?ID=2515. His book is a good primer for turbojet design theory and RC application with plenty of photos of how to manufacture the engine.
All the bodies were created using only the PartDesign workbench "in context" in one file as is my standard practice for creating these type of assemblies. No assembly workbenches were used, since for my purposes, there is no need for constraints among the bodies. Fasteners were added from the Fastener add-on workbench.
Several screenshots are included with some brief comments for new users that may be interested in the process:
- - - - -
I will place the model on DropBox via PM for anyone that may be interested as long as it is only used for instructional or educational purposes. I have found that trying to recreate someone's model by recreating the model tree step-by-step can be a good alternative to tutorial videos as long as you are familiar with the basic GUI tools.
The version I used is shown below which is behind several revisions currently available, but I found that the latest versions are not yet stable enough for this type of project.
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.17352 (Git)
Build type: Release
Branch: master
Hash: ec0049921b813ee78c1fd4ea304e70904a3208f7
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/UnitedStates (en_US)
This is a good PartDesign project for intermediate level users. Although the assembly is quite simple it requires the use of most of the basic workbench tools. My FreeCAD model is based on Schreckling's plans found in his book at https://rclibrary.co.uk/title_details.asp?ID=2515. His book is a good primer for turbojet design theory and RC application with plenty of photos of how to manufacture the engine.
All the bodies were created using only the PartDesign workbench "in context" in one file as is my standard practice for creating these type of assemblies. No assembly workbenches were used, since for my purposes, there is no need for constraints among the bodies. Fasteners were added from the Fastener add-on workbench.
Several screenshots are included with some brief comments for new users that may be interested in the process:
- - - - -
I will place the model on DropBox via PM for anyone that may be interested as long as it is only used for instructional or educational purposes. I have found that trying to recreate someone's model by recreating the model tree step-by-step can be a good alternative to tutorial videos as long as you are familiar with the basic GUI tools.
The version I used is shown below which is behind several revisions currently available, but I found that the latest versions are not yet stable enough for this type of project.
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.17352 (Git)
Build type: Release
Branch: master
Hash: ec0049921b813ee78c1fd4ea304e70904a3208f7
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/UnitedStates (en_US)
"It is a poor workman who blames his tools..."
Re: V0.19: Gas Turbine Engine for RC Aircraft
Impressive as allways
Could you elaborate on CarbonCopy kicking sketch out of Part container? Since it happens while editing the sketch how is that possible?
Could you elaborate on CarbonCopy kicking sketch out of Part container? Since it happens while editing the sketch how is that possible?
Re: V0.19: Gas Turbine Engine for RC Aircraft
Sorry for glossing over that.
What I should have wrote more precisely is that a copy (Edit>Duplicate selected object) of the CarbonCopy is kicked out of the Part.
When I have multiple features that depend on a single master sketch, I make a copy of the CarbonCopy rather than a new CarbonCopy for each feature. Perhaps that is not the best way or a bad habit?
"It is a poor workman who blames his tools..."
Re: V0.19: Gas Turbine Engine for RC Aircraft
That is actually quite clever. If you have one full CarbonCopy it is easy to find it in the tree and duplicate it instead of making Master visible, selecting if from sketch, wandering of Ctrl/Alt/... combinations for non paralel/out of body sketches...
- miniellipse
- Posts: 101
- Joined: Tue Apr 24, 2018 9:09 pm
Re: V0.19: Gas Turbine Engine for RC Aircraft
Wow...thanks for sharing.
ppemawm wrote: ↑Mon Sep 09, 2019 4:41 pm This is a small gas turbine engine for use in radio controlled (RC) model aircraft. The engine was designed and developed by Kurt Schreckling in 1992. It is remarkably simple design that can apparently be created using basic machine shop tools by experienced RC hobbyists using readily available materials.
This is a good PartDesign project for intermediate level users. Although the assembly is quite simple it requires the use of most of the basic workbench tools. My FreeCAD model is based on Schreckling's plans found in his book at https://rclibrary.co.uk/title_details.asp?ID=2515. His book is a good primer for turbojet design theory and RC application with plenty of photos of how to manufacture the engine. ....
Re: V0.19: Gas Turbine Engine for RC Aircraft
Very Intresting!
Long Time Ago, I bought the Book of this Turbine and started bulding it.
Now many Years later I remember that and thought it would be a good Exercise for CAD Constructionl.
And thought about makiong a Turbofan Turbine on the Base of this Construction.
Would you share your Sketches with me?
I could share my Sketches and Exercises also.
Greetings from Hamburg,
Sven
Long Time Ago, I bought the Book of this Turbine and started bulding it.
Now many Years later I remember that and thought it would be a good Exercise for CAD Constructionl.
And thought about makiong a Turbofan Turbine on the Base of this Construction.
Would you share your Sketches with me?
I could share my Sketches and Exercises also.
Greetings from Hamburg,
Sven
Re: V0.19: Gas Turbine Engine for RC Aircraft
I will contact you via Private Message.
Thank you for your interest.
"It is a poor workman who blames his tools..."
Re: V0.19: Gas Turbine Engine for RC Aircraft
You had done it very well!
Thanks, Sven
Thanks, Sven
Re: V0.19: Gas Turbine Engine for RC Aircraft
There is a guy who explains how he makes an RC-Jet engine : https://www.youtube.com/watch?v=dYFYZ-g7fzA . It looks quite non-trivial to make.ppemawm wrote: ↑Mon Sep 09, 2019 4:41 pm This is a small gas turbine engine for use in radio controlled (RC) model aircraft. The engine was designed and developed by Kurt Schreckling in 1992 [...] Schreckling's plans found in his book at https://rclibrary.co.uk/title_details.asp?ID=2515.
- arturromarr
- Posts: 326
- Joined: Sat Jun 24, 2017 9:32 pm
- Location: Poland
Re: V0.19: Gas Turbine Engine for RC Aircraft
Great project, I wish you success in implementation.
Best regards.
Best regards.