Search found 28 matches
- Fri Sep 05, 2014 9:09 pm
- Forum: Help on using FreeCAD
- Topic: Help on designing Fuselage
- Replies: 11
- Views: 7403
Re: Help on designing Fuselage
Not sure how well this works for modern planes, but historic aircraft was essentially made by lofting from a few sections. You can see the shapes and positions of the sections in any decent plan. http://www.fiatcr32.rotorswings.com.au/ I try to create the sections shown in the plan as closely as pos...
- Fri Aug 29, 2014 12:29 pm
- Forum: Help on using FreeCAD
- Topic: Help on designing Fuselage
- Replies: 11
- Views: 7403
Re: Help on designing Fuselage
I generally begin with cross sections in the same positions that they were on the real aircraft.
- Fri Aug 08, 2014 10:52 am
- Forum: Open discussion
- Topic: FreeCAD on the web
- Replies: 833
- Views: 433966
Re: FreeCAD on the web
I thought about saying that previous CAD experience wouldn't hurt, but from the forum we've seen that previous CAD experience can be either a blessing, curse, or somewhere in between for somebody starting on with FreeCAD - it just depends on the individual. Well, I would definitely avoid saying som...
- Thu Jul 24, 2014 10:02 pm
- Forum: Help on using FreeCAD
- Topic: Design irregular shapes in FreeCAD
- Replies: 4
- Views: 4098
Re: Design irregular shapes in FreeCAD
Create cross sections and use Part - Loft.
- Sun Jul 20, 2014 7:44 pm
- Forum: Open discussion
- Topic: Any nearer to FreeCAD 0.14 going GA.
- Replies: 254
- Views: 67015
Re: Any nearer to FreeCAD 0.14 going GA.
I updated Wikipedia in all languages except Persian and Japanese, but I didn't go so far as to change screenshots.
- Sun Jul 13, 2014 8:31 pm
- Forum: Open discussion
- Topic: Any nearer to FreeCAD 0.14 going GA.
- Replies: 254
- Views: 67015
Re: Any nearer to FreeCAD 0.14 going GA.
I checked the German release notes, and the first sentence (apart from being in English) still states July 6. Could you please also fix this to get things consistent?
- Sun Jul 13, 2014 8:35 am
- Forum: Open discussion
- Topic: Any nearer to FreeCAD 0.14 going GA.
- Replies: 254
- Views: 67015
Re: Any nearer to FreeCAD 0.14 going GA.
I think July 1 makes much more sense. It was the date announced by wmayer beforehand, and he kept his promise and released a functional stable version on that date. There were people (including me) who installed and started using stable 0.14 on the very first day. It is of minor importance that some...
- Fri Jun 27, 2014 6:20 pm
- Forum: Help on using FreeCAD
- Topic: complex curves
- Replies: 2
- Views: 1254
Re: complex curves
I am not sure whether this is possible, but I found a rather convoluted way to do something of that sort. First I created four short parallel lines and moved them around space using the positioning window. Then I created a loft through them, which is the curved narrow strip. Then I extracted a curve...
- Fri Jun 27, 2014 7:32 am
- Forum: Help on using FreeCAD
- Topic: More a Maths question than a FreeCAD one.
- Replies: 9
- Views: 3916
Re: More a Maths question than a FreeCAD one.
There is an amazing theorem called Archimedes' Hat-Box Theorem, which you might find instructive for this sort of problems. It says that the area of a spherical segment equals the area of its projection on a surrounding cylinder. See the picture at http://mathworld.wolfram.com/ArchimedesHat-BoxTheor...
- Fri Jun 27, 2014 7:05 am
- Forum: Help on using FreeCAD
- Topic: More a Maths question than a FreeCAD one.
- Replies: 9
- Views: 3916
Re: More a Maths question than a FreeCAD one.
The revolution doesn't change the result because the surface is proportional to the revolution angle, so the final answer is angle = p * pi / 2, with p in [0, 1]. This is wrong. The result is skewed by the position of each infinitesimal line segment. Take a look at the picture of a spherical cap at...