Gregory Knowles Profile picture
Part-time wanderer, full-time observer. Experiences may vary. Abrams fan, ‘German engineering’ sceptic, numbers matter. Views my own, RT =\= endorsement
Aug 6 18 tweets 11 min read
Thread covering operational availability, HUMS, & how non-obvious factors affect infantry small arms. Like the Tiger tank, there’s no point in having the ‘best’ if it’s inherently unreliable, disproportionately expensive or difficult to maintain to the point of irrelevance. 1/ Standard caveats, this is an overview, generalisations are made in good faith, only public domain information is sourced or used, &, wherever possible, I’ve referenced public domain information, not internet opinion…though this is one! 2/
Jul 31 24 tweets 12 min read
Super brief overview of the what the US Army terms ‘enhanced projectile rounds’, how they came to be, what they are & aren’t, what they do, the problems they caused & solved, & how EPRs became the default standard round in the US Army. 1/ Standard caveats, this is an overview, generalisations are made in good faith, only public domain information is sourced or used, wherever possible, I’ve referenced US Army public domain information, not internet opinion…though this is one! 2/
Jul 28 15 tweets 8 min read
Hands up anyone who hadn’t heard “chamber pressures” referred to when discussing small arms before the US Army Next Generation Squad Weapon result?
Does it matter? Why is important? What are the misconceptions? ImageImage Simply put, the barrel & bolt of a rifle or machine gun form a pressure vessel. This pressure vessel is designed to contain the force of the deflagration of propellant to propel a projectile out of the muzzle to hit a target some distance away. 2/ Image
Jul 23 23 tweets 12 min read
Short, introductory, thread to silencers (h/t Hiram Maxim, the inventor), more recently known as ‘suppressors’ & the requirements surrounding them. This thread is within the modern conventional military context. Won’t be discussing suppressor performance measuring. 1/ Caveat: this is non-technical & non-scientific thread - very much the basics required enhance understanding. As with everything pertaining to firearms, ballistics, & engineering, there’s no free lunches. Lots of compromises are the name of the game. 2/
Nov 20, 2021 12 tweets 6 min read
A characteristic common to evolving smart/digital sights is the necessity for the fire control system to control the release of the shot in some modes.
You can see on my 📸 of SMASH in the orange dummy that this is more than “just a sight”.
The patent documents confirm this. 1/ Refer to the “Firing Actuator”. Similar on concept to a tank fire control system, this iteration of sight, in some modes, only releases the shot once the first has pulled the trigger *&* the prerequisites for shot release have been met (e.g. barrel passing in front of target). 2/
Sep 19, 2019 11 tweets 6 min read
Let’s talk composite rubber tracks.
DSEI was the public debut of a Warrior IFV fitted with @DefenseSoucy 530mm wide tracks, that had completed an 8,000km/5,000 mile trial. These replaced the legacy Cook Defence Systems TR30 steel tracks. Why CRT?
-Direct weight savings of 1,500 kg (5% GVW reduction).
-Increases vehicle average range 28%.
-Reduces overall noise by 57%.
-Reduces average vibration by 42%.
-Improves Mobility Index by 24%.
-Has a better Vehicle Cone Index.
-Reduced road wheel replacement by 66%.