Changes

=== Calibers ===

=== Calibers ===

Calibers are a way of measuring the distance between CP and CG - it doesn't make sense to solely measure based on distance, as a 3" difference on a 2" OD, 24" long rocket is very different from a 2" difference on a 10' long, 6" OD one. One caliber is defined as the diameter of the airframe.

Calibers are a way of measuring the distance between CP and CG - it doesn't make sense to solely measure based on distance, as a 3" difference on a 2" OD, 24" long rocket is very different from a 2" difference on a 10' long, 6" OD one. A caliber is defined as the diameter of the airframe.

Instead, calibers measure the length between CP and CG, divided by the outer diameter of the rocket, allowing for a much more fair comparison between different rocket sizes. For context, a CP of 1.5-2 is considered good, while numbers outside of that range tend to be either under-or-over-stable.

Calibers measure the length between CP and CG allowing for a much more fair comparison between different rocket sizes. It would be correct to say, the CG is 2 calibers away from the CP.

 

As a rule of thumb, having your CP 1.5-2 calibers in front of your CG is considered good, while numbers outside of that range tend to be either under-or-over-stable.

== Motor Specs ==

== Motor Specs ==