McKailas Dad
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- Feb 2, 2010
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I am in the process of (attempting to) making a 4in ogive nose cone, 16.5" long, with a ~5:1 aspect ratio. (I guess that would be a 4.125:1 for a 16.5" length?)
The online calculators I tried were 'dead links'.
I tried the equations from Here, but couldn't figure it out. My math is extremely rusty...(ok, bad)
The 'simplest' equation I could find, that I could understand, was found in a PDF from David Stribling that I forgot where I found!
Radius = d(C2+.25)
Where d=base diameter
C=caliber (or aspect ratio)
Or R=4(17.01+.25)
So R=69.06?
Does that mean I would use a 34.53" 'arm' to draw the radius of my nose cone?
If it were a 5:1...
R=4(25+.25)
So R=101?
Would that be a 101" 'arm' or a 50.5" one?
I hope you understand the question, I'm not even sure I do......
How long of an 'arm' would I need to make to draw the radius for a 4" NC with a 4.125 or 5:1 aspect ratio? (ideal length 16.5")
Thanks (alot...)
The online calculators I tried were 'dead links'.
I tried the equations from Here, but couldn't figure it out. My math is extremely rusty...(ok, bad)
The 'simplest' equation I could find, that I could understand, was found in a PDF from David Stribling that I forgot where I found!
Radius = d(C2+.25)
Where d=base diameter
C=caliber (or aspect ratio)
Or R=4(17.01+.25)
So R=69.06?
Does that mean I would use a 34.53" 'arm' to draw the radius of my nose cone?
If it were a 5:1...
R=4(25+.25)
So R=101?
Would that be a 101" 'arm' or a 50.5" one?
I hope you understand the question, I'm not even sure I do......
How long of an 'arm' would I need to make to draw the radius for a 4" NC with a 4.125 or 5:1 aspect ratio? (ideal length 16.5")
Thanks (alot...)