# Tag: math

## Preference-Driven vs. Process-Driven Design in the Field of Small Arms Ammunition: Discussion

In yesterday’s article, we took a look atÂ examples of two different methods of design, which I called “preference-driven” and “process-driven”. For these examples, I supposed two engineers from two different cultures – called [Read More…]

## Romulan, or Vulcan? Preference-Driven vs. Process-Driven Design in the Field of Small Arms Ammunition

If you were designing the next small arms round, how would you do it? What methods would you use to determine its physical characteristics and performance attributes? How would you know what was too large or too small, too powerful or too weak? Perhaps more critically, [Read More…]

## Why The Army’s Next Round HAS to Be Light – In Just One Simple Example

We are at a crossroads in small arms development. Demands for improved weapon effectiveness have reached their apex. At the same time, the soldier’s burden has grown into a crisis so pressing even the Army Chief of Staff has acknowledged it in testimony to [Read More…]

## Modern Intermediate Calibers: Trade-Offs – Bullet Mass

In the last installment, we talked about the trade-offs involved in increasing or decreasing the projectile’s diameter (and, thereby in convention systems, the bore’s diameter as well). One of the major pieces of the equation that we left out was how [Read More…]

## Modern Historical Intermediate Calibers 011: The 5.56×38 FABRL

AnÂ interesting concepts that was tested in the mid-late 20th Century is that of an extremely light for caliber, very long bullet made of lightweight materials like aluminum and plastic. The 7.92×40 CETME, which if I can find a specimen I will cover later on, is [Read More…]

## Operating Systems 301: Introduction to Advanced Concepts

So far we’ve looked at the most basic concepts in firearms operating mechanisms as part of the 101 series of posts, and some more advanced concepts like locking and bolt configuration in the 201 level entries. However, there is a whole lot more depth to the [Read More…]

## Ballistics 101: What Is Pressure?

In the first article discussing the mechanisms by which a firearm locks its breech, we mentioned briefly two quantities that are important for small arms design: Pressure, and bolt thrust. The latter we’ll discuss in a later installment, but today we’ll [Read More…]