Lindybeige
Published on 31 Jul 2018At Bovington Tankfest, there were three Stug III assault guns for me to have a look at. Naturally, I looked at all three.
Support me on Patreon: https://www.patreon.com/LindybeigeThanks to The Tank Museum at Bovington for the invitation.
Lindybeige: a channel of archaeology, ancient and medieval warfare, rants, swing dance, travelogues, evolution, and whatever else occurs to me to make.
▼ Follow me…
Twitter: https://twitter.com/Lindybeige I may have some drivel to contribute to the Twittersphere, plus you get notice of uploads.
Facebook: https://www.facebook.com/Lindybeige (it’s a ‘page’ and now seems to be working).
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website: http://www.LloydianAspects.co.uk
August 21, 2018
The StuG III – Germany’s deadliest AFV
August 18, 2018
The collapse of Genoa’s Ponte Morandi
Austin Williams reviews what information is currently available on the collapse of one of the towers of the Morandi Bridge (Ponte Morandi) on Tuesday:
The appalling tragedy of the Morandi Bridge, which collapsed on Tuesday, 14 August 2018, is a disaster that is still under investigation. At the moment, there are reports of 40 lives lost, but not much is known about the causes or the wider consequences. I am loath to speculate about either, but there needs to be a wider conversation and not simply kneejerk demands for corporate manslaughter charges against the private bridge-operating company, Autostrade per l’Italia. Heads will roll – deservedly so – but we must look at wider concerns about infrastructure, per se. (I caveat all of this by saying that pre-empting the ongoing investigation may reveal me to be wide of the mark.)
Firstly, the collapse was extraordinary. The bridge – built in the mid-1960s and named after the civil engineer Riccardo Morandi – is architecturally unique, and with this comes unique stresses that may have given rise to the catastrophic failure. A similar collapse of a similar nature and magnitude has not occurred before with a cable-stayed bridge. This bridge had 90m-high concrete towers that held tensioned cables fixed at an angle to the deck (the roadway), meaning that as the cables were being stretched by the loads, the towers were being squashed by the same loads. In engineering terms, the weight of the deck (and the traffic on it) was carried by the combined structure, meaning that the towers were under tremendous compression while the cables were under tension.
Bridge design always makes allowances – contingencies – for localised failure, and therefore even the most efficient, slender structures tend to be over-designed so that the engineers can sleep at night. The bridge has to imagine, for example, wind loads, snow loads, or 250 lorries being on the bridge rather than just 250 cars. But have the owners and managers of this bridge kept up with the reality, that in the 60 years or so since this bridge was constructed, loading conditions have significantly increased owing to increased freight volumes and vehicle sizes? Has this unseen attritional damage finally come home to roost?
In this bridge design, there is only one angled ‘stay’ (made up of four steel cables) encased in a concrete covering. The idea was that the concrete would protect the steel from weathering, corrosion and failure. Maintenance work as recently as 15 or so years ago replaced some of the cable stays and recoated them in concrete. Suggestions that cracks in the concrete exacerbated the ingress of water, which speeded the corrosion of the cables, are possible, but not totally convincing.
Were the cables to snap – possibly requiring more than one to snap due to the engineering contingency discussed above – then the deck would fall and possibly overbalance the entire structure. However, the fact that the towers collapsed in such a horrific fashion – seeming to crumble – may hint that the problem may lie in the foundations, where regular maintenance work was being carried out. We just don’t yet know. As Professor Gordon Masterton, from the University of Edinburgh’s school of engineering, told the Guardian, there needs to be a ‘forensic and thorough’ investigation to get to the root cause.
Mythbusting with the .30-06 American Chauchat: Reliability Test
Forgotten Weapons
Published on 28 Jul 2018http://www.patreon.com/ForgottenWeapons
Everyone knows, of course, that the Chauchat is the worst gun ever, and can’t normally get through an entire magazine without malfunctioning. Well, let’s try that out … and with an even worse culprit; an M1918 Chauchat made for the AEF in .30-06.
If you enjoy Forgotten Weapons, check out its sister channel, InRangeTV! http://www.youtube.com/InRangeTVShow
August 16, 2018
In praise of Donald Knuth
David Warren sings the praises of the inventor of “TeX”:
Among my heroes in that trade is a man now octogenarian, a certain Donald Knuth, author of the multi-volumed Art of Computer Programming, and of the great mass of algorithms behind the “TeX” composing system. A life-long opponent of patenting for software, and still not on email, he is one of the finer products of the Whole Earth Catalogue mindset of that era, though as a devoted Christian, he had it from older sources. (The mindset of: forget politics and do-it-yerself.)
Perfesser Knuth’s life journey was somewhat altered when a publisher presented him with the galley proofs for a reissue of one of his earlier volumes. They were, compared to the pages of the original hot-metal edition, a dog’s breakfast. In particular, even when technically correct, the mathematical formulae appeared to have been set by monkeys. He resolved to “make the world a better place” by doing something about this.
Knowing (pronounce the “k” as we do in this author’s surname) that computers can do many things that humans can’t — or can’t within one lifetime — he set about designing the computer processes to calculate beautiful letter and word spacings, line-breaks, line spacings, marginal proportions and such. He understood that civilization depends on literacy, literacy on legibility, and legibility on elegance. Ruthlessly, he recognized that things like “widowed” and “orphaned” lines of text are moral evils, and discovered algorithms that could exterminate them by complex anticipation. Too, he contributed to the counter-revolution by which the letters themselves could be drawn not pixelated.
I will quickly lose my few remaining readers if I go into the details. But here was a man (and still is) who discerned that nature herself is built on aesthetic principles, which men can investigate and apply. It is when something is ugly that we can know that it is wrong. Mathematicians, like poets and other artists, can embody the Faith at the root of this.
To my mind, or I would rather say K-nowledge, there is nothing wrong with technology, per se. We can often do things better with new tools. But we must be guided by the uncompromising demands of Beauty. Everything must be made as beautiful as we can make it: there must be no wavering, no surrender. All that is ugly must be consigned to Hell.
August 13, 2018
Tank Chats #34 Chieftain | The Tank Museum
The Tank Museum
Published on 31 Mar 2017The thirty-fourth Tank Chat, this time presented by Curator David Willey after some help from Eli. https://youtu.be/T33hp0J-LAw
Britain’s Main Battle Tank for twenty years, Chieftain was one of the first true Main Battle Tanks, designed to replace both medium and heavy tanks in front line service.
To find out more, buy the new Haynes Chieftain tank manual. https://www.myonlinebooking.co.uk/tan…
Support the work of The Tank Museum on Patreon: ► https://www.patreon.com/tankmuseum
Or donate http://tankmuseum.org/support-us/donate
August 11, 2018
Cobray Terminator at the Range: The Worst Shotgun Ever
Forgotten Weapons
Published on 21 Jul 2018http://www.patreon.com/ForgottenWeapons
Most of the guns made by Cobray are pretty awful, but one can at least understand the market they were made for. The Terminator is different, because it really is rather incomprehensible who would have actually thought that a single shot, open bolt 12 gauge shotgun with a terrible stock would be a good thing to spend money on. Really the only explanation I can come up with is that it looks industrial and mean, and I suppose some people would have bought it just for that.
Having taken one to the range now, my suspicions of its terribleness have been fully confirmed. It actually is painful to shoot, and the open bolt slamfire mechanism does a great job of magnifying the inevitable flinch it will give you. It’s clunky and annoying to reload, and also to unload after firing. I never did figure out why it was failing to fire so much for me, unless it was simply a short firing pin with deep-set primers. To be honest, I don’t really care. I’m just happy to be able to send it back to the generous (if perhaps sadistic) viewer who loaned it to me.
If you enjoy Forgotten Weapons, check out its sister channel, InRangeTV! http://www.youtube.com/InRangeTVShow
August 9, 2018
August 8, 2018
Doing military intelligence … backwards
Ted Campbell on what he sees as a big problem with western military command structures and particularly the way military intelligence is being over-centralized away from the fighting troops and pushed high up the chain of command:
Intelligence is vital in modern combat operations … just as it was when Alexander set about conquering the known world. But, as Alexander knew, real intelligence is gathered by the troops in direct contact with the enemy and is augmented by e.g. spies who read the enemies mail (our modern, very effective SigInt services, for example, and drones and so on). There is a now well established ~ and I think wrong headed ~ system which aims to collect ALL intelligence at the highest possible level and then disseminate it down … that’s exactly backwards! Combat intelligence is gathered, in the main, by troops in contact with the enemy, by privates and troopers and corporals and then it is passed up the chain to be collated with reports from other troops in contact and then a refined picture is passed back down … where it is promptly corrected by the troops in contact. Intelligence staffs in HQs almost never know much of anything of real utility but they have convinced commanders that if there can only be more and more highly ranked intelligence officers with more clerks and more drones and more computers and so on, that they will, somehow, get ahead of the enemy. It’s a siren song that has, already, run more than one combat commander up on to the rocks of operational failure. The only people who have a good feel for what the enemy is up to are the people who have them in their sights. Don’t get me wrong: I am a HUGE fan of SigInt and drones and UWB radio devices that can see through walls and so on … I want the micro drones and the cyber bugs to be in the hands of the corporals in the rifle sections who are making their way house-to-house and floor-by-floor.
But the bigger threat, by far, is a brigade command post that looks like this …
… than like this:
The urban battle of the future, like those of the past will be fought by rifle sections of eight to 12 soldiers, directed by platoon commanders (young, 20-something, lieutenants) overseen and supports by company and battalion commanders. The lessons that my Regiment learned at Ortona, during the Christmas season of 1943, (and which were drummed into my head by ‘old sweats‘ 20 years later) will still apply. Generals and brigadiers and colonels may plan and guide the battle but it will be fought by captains and corporals and privates … hand-to-hand, house-by-house, street-by-street … whether it is a small city or a giant metropolis. Yes, that young soldier would love to have a little drone to see around the corner before he throws the grenade and he might even be interested in knowing that SigInt says that enemy is running low on ammo and food, but at the moment he, like all combat soldiers, must trust, mainly, in his own judgment of the situation as he, and only he, can see it.
But while the privates and corporals are fighting the battle and gathering the real intelligence about the enemy, the legal officer will be wanting to know exactly what (s)he (the rifle section commander) sees and (s)he, the legal officer, will want to advise the brigade commander (who commands 6,500 soldiers) to interfere directly with the the command decisions of the most junior leaders (section (10 soldiers) and platoon (35 soldiers) commanders) and with the control decisions being made by company (125 soldiers) and battalion (900 soldiers) commanders. Good brigade commanders will resist that pressure and they will, equally, close their ears to the urgent warnings of the Public Affairs officer who will say something like “if this goes wrong the Minister will be embarrassed and that will cost you your next star.”
August 7, 2018
Flying Tanks! Tetrarchs and Locusts
Lindybeige
Published on 31 May 2018Bovington Tank Museum, and The Chieftain again – ten minutes on the topic of air-portable tanks of World War Two.
Support me on Patreon: https://www.patreon.com/LindybeigeIt is possible that (some?) Tetrarchs had holes in the sides of the turret for a drawstring that could pull the trigger of the smoke projector from inside the turret. However, you really wouldn’t want the rifle cocked and ready to fire unless you were just about to use it. White phosphorous is dangerous stuff and you would make no friends by setting it off by snagging your belt on the string as you climbed in the tank.
Hannibal graphic novel (in production): http://www.InSearchofHannibal.com
Many thanks to The Chieftain, my co-presenter, and to The Tank Museum at Bovington.
Two ideas have been posted in the comments for the name ‘Tetrarch’. One is that it has four equally-sized wheels on each side (which guide the tank, a bit like four rulers guide an empire). The other is that there was a very famous racehorse called ‘The Tetrarch’ that died in 1935. The tank was not designed originally for air-drops, but was presumably meant to be fast, so that makes sense.
Lindybeige: a channel of archaeology, ancient and medieval warfare, rants, swing dance, travelogues, evolution, and whatever else occurs to me to make.
▼ Follow me…
Twitter: https://twitter.com/Lindybeige I may have some drivel to contribute to the Twittersphere, plus you get notice of uploads.
Facebook: https://www.facebook.com/Lindybeige (it’s a ‘page’ and now seems to be working).
August 5, 2018
Rockets – Blinded Soldiers I OUT OF THE TRENCHES
The Great War
Published on 4 Aug 2018Chair of Wisdom Time! Indy talks about rocket usage in WW1 and how blinded soldiers were rehabilitated.
August 4, 2018
Rhodesia Made Their FALs Great With This One Weird Halbek Device!
Forgotten Weapons
Published on 14 Jul 2018http://www.patreon.com/ForgottenWeapons
The Halbek Device was a clamp-on muzzle brake designed by two Rhodesians, Douglas Hall and Marthinus Bekker. It was patented in Rhodesia in 1977 and in the US in 1980, and manufactured in small numbers for the Rhodesian military. I have seen these occasionally, and doubt they are actually very effective. But during a filming trip to South Africa I had a chance to actually try one on a select-fire R1 FAL, complete with high speed camera to find out for sure. So, let’s see what they really do…
If you enjoy Forgotten Weapons, check out its sister channel, InRangeTV! http://www.youtube.com/InRangeTVShow
August 2, 2018
Manufacturing the Engineered Wood Floor Joists
Bob Vila
Published on 30 Mar 2015Bob visits the Willamette I-Joist Mill in Woodburn, OR, before returning to Yonkers where the crew is assembling the second floor walls with structural insulated panels.
August 1, 2018
How did early Sailors navigate the Oceans? | The Curious Engineer
TheCuriousEngineer
Published on 5 Oct 2014Do you know how the early sailors navigate the oceans? The technology today makes it real easy to navigate the oceans. But it’s very interesting to know how the early sailors managed to navigate without it. There’s a lot of history on it. I tried my best to compile some important and interesting parts of it into this video. Hope you like it 🙂
July 30, 2018
Forgotten History: World’s Biggest Black Powder Cannon – a 100-Ton Gun
Forgotten Weapons
Published on 10 Jul 2018http://www.patreon.com/ForgottenWeapons
The largest muzzleloading black powder cannons ever built were the Armstrong 100-ton guns which saw service with the Italian Navy and with British coastal fortifications on Malta and Gibraltar. They were purchased by the Italians first, to outfit a pair of new super battleships, each vessel having two turrets with two of these guns in each. To avoid being outclassed, the British ordered two guns for installation to protect the Grand Harbor of Malta and two more to protect Gibraltar. Today one survives at each location, and we are visiting the Rinella Battery in Malta, which was built to house one of the Maltese guns.
These guns had a maximum range of 8 miles, and was capable of piercing 15 inches of iron armor at 3 miles. It had a 17.7 inch (45cm) bore fired a 2000 pound (900 kg) shell with a 450 pound (200kg) charge of black powder. The gun itself weighed approximately 102 tons, and with its cradle and a shell the whole assembly came in at 150 tons.
Aside from the massive scale of the piece, the most interesting part of its design is actually the loading machinery. Because of the titanic size of the gun and ammunition, Armstrong designed a fascinating hydraulic reloading facility which makes up the body of the fortress in which the gun is set. A pair of steam engines drove a pair of hydraulic accumulators, which provided hydraulic pressure to move the gun on its carriage, to douse the barrel after firing, to hoist ammunition into position for loading and power a 60-foot (18m) ramrod to mechanically ram the charge and shell into place. Two mirror-image reloading galleries under the fortification operated in turn, giving the gun a sustained rate of fire of 1 round every 6 minutes – at least until its 120-round barrel life was exhausted.
I am grateful for the Malta Tourism Authority’s assistance in helping to make this visit and video possible, and would also like to give special thanks to Simon, our awesome reenactor guide!
If you enjoy Forgotten Weapons, check out its sister channel, InRangeTV! http://www.youtube.com/InRangeTVShow