A tangent ogive body has a specific radius for a given length, so how would you determine length if only given the radius?

  • 1
    $\begingroup$ Assuming you also know the shank diameter... $\endgroup$ Nov 12, 2019 at 16:06

1 Answer 1


Looking at the the image below:



$L=\sqrt{r^2-\left(r-\left(\frac{D}{2}\right)\right)^2}=\frac{1}{2}\sqrt{-D (D - 4 r)}$

Ogive Diagram

  • $\begingroup$ Also, can you determine the length without knowing the ogive radius, but just the shank diameter? I don't think so. But do let me know. $\endgroup$
    – Rajath Pai
    Nov 12, 2019 at 21:01
  • $\begingroup$ If you know any two of the three (Shank Diameter, Ogive Radius, Length) you can calculate the third value. If you only have one value then you can work out the relationship between the final two, but won’t be able get a fixed value. $\endgroup$ Nov 13, 2019 at 8:54

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.