11-10-2014, 09:33 PM
This might be interesting for some of you.
The projectile trowing engines of the ancients by Sir Ralph Payne-Gallwey
https://www.tcd.ie/mecheng/assets/Mangon...cients.pdf
The projectile trowing engines of the ancients by Sir Ralph Payne-Gallwey
https://www.tcd.ie/mecheng/assets/Mangon...cients.pdf