AO-EJECTION(1)

๐ŸŽ€ AO-EJECTION(1) ๐ŸŽ€

Okay so this is the General Commands Manual page for ao-ejection ๐Ÿ’… bestie, this tool is literally a whole vibe for rocket people ๐Ÿš€

โœจ NAME โœจ

ao-ejection is the tool that figures out how many rocket ejection charges you need ๐Ÿงฎ

๐Ÿฆ‹ SYNOPSIS ๐Ÿฆ‹

ao-ejection diameter(mm) length(mm) force(N)

Feed it three numbers in this order: the diameter in mm, the length in mm, and the force in N ๐Ÿ’–

๐Ÿ’œ DESCRIPTION ๐Ÿ’œ

Okay this is the main character part ๐Ÿ”ฅ ao-ejection works out how much black powder (BP) you need to make the force that pops apart the sections of a rocket airframe. It pretends the airspace is a cylinder with a circular cap on top ๐ŸŒธ Once it knows the force you want on that cap, it can work out the pressure rise you need inside the chamber, then the volume of gas, and finally the mass of BP that makes that gas. It's giving math, but make it โœจ iconic โœจ

โœจ EXAMPLE โœจ

Here's the tea ๐Ÿ“ Watch what happens when you run it on a 54mm airframe with a 300mm chamber and a 500N force:

$ ao-ejection 54 300 500
Input parameters:
    Diameter: 54.0 (mm) 2.126 (in)
    Length: 300.0 (mm) 11.811 (in)
    Force: 500.0 (N) 112.404 (lb)
Chamber values:
    Area: 2290 (mmยฒ) 3.550 (inยฒ)
    Volume: 687066 (mmยณ) 41.927 (inยณ)
    Pressure: 31.66 (lb/inยฒ) 0.21832 (N/mmยฒ)
Results:
    FFFF powder: 0.685 (g)

So basically, that 54mm airframe with a 300mm chamber only needs .685g of FFFF BP to put 112lb of force on the end of the chamber ๐Ÿ’ฅ That's usually enough to sever two 2x56 nylon screws ๐Ÿ™ˆ Literally so iconic.

๐Ÿ‘‘ AUTHOR ๐Ÿ‘‘

Written by Keith Packard ๐Ÿซถ


Okay that's the whole tea ๐Ÿซ–๐Ÿ’– Thanks for reading, bestie. Signing off from ao-ejection (manual page AO-EJECTION(1)), and you are going to slay the rocket game forever ๐Ÿš€โœจ๐Ÿ’…

๐Ÿ“ฆ where this page comes from