gunnersman Posted January 1, 2006 Share Posted January 1, 2006 Originally posted by Michael Emrys: </font><blockquote>quote:</font><hr />What this sounds like are headphones that produce a sound that is 180 degrees out of phase of the gun sound effectively canceling the sound of the blast, to a degree.That works fine for continuous noise, such as from an engine. Impulse sounds, like gunfire, effect the hearing differently (for reasons I do not quite understand, unless it has something to do with the phenomenona discussed in the previous paragraph). Michael </font> 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 1, 2006 Share Posted January 1, 2006 Originally posted by M1A1TankCommander: Do you remember the first time the gun went off while you were next to it inside? I scared the crap out of me.. I still remember that, and it was about 8 years ago It sure was scary! I remember that i was really occupied with the question of "should i close my eyes when it goes off or not", and when it fires they simply close by them selfs. But the most memorble thing is the smell of gun powder, which is overwhelming in the first time! 0 Quote Link to comment Share on other sites More sharing options...
M1A1TC Posted January 1, 2006 Share Posted January 1, 2006 Yes, I agree. It smells wierd, almost like CS, and the turret blower doesnt quite get it all out. I definatly closed my eyes for few times Does Merkava use burnable shells, so all you have left is stubs? Does it have hydraulic doors for ammo storage? Here is a photo of my gunner at the time [ January 01, 2006, 04:08 PM: Message edited by: M1A1TankCommander ] 0 Quote Link to comment Share on other sites More sharing options...
Goatsee Posted January 1, 2006 Share Posted January 1, 2006 I have only been outside when tube artillery was fired. You do open your mouth. being inside an armored vehicle would attenuate the noise and blast. 0 Quote Link to comment Share on other sites More sharing options...
Michael Emrys Posted January 2, 2006 Share Posted January 2, 2006 Originally posted by Goatsee: What muscles?I don't know what they are called, but they are there. There are no muscles that I know of.Maybe you are looking in the wrong place. The whole articulation of the neck/jaw/ear area and its musculature is pretty complex. Do you have muscles so you can 'squint' your hearing?Yep. I've done it, both voluntarily and involuntarily. I've also seen something written up about it in a science magazine or two. There was an article on one occasion about someone who was training people to do it in order to protect their hearing. Said it increased their tolerance by some number of decibels. The eardrum does transmit vibrations to the small bones that in turn send the varying pressure into the cochlea (sp?). THIS then is picked up by the nevrves in the ears.Right. That's what I said except that instead of 'cochlea' I used the phrase 'inner ear'. The terms are interchangeable. Michael 0 Quote Link to comment Share on other sites More sharing options...
stoat Posted January 2, 2006 Share Posted January 2, 2006 Originally posted by Michael Emrys: Right. That's what I said except that instead of 'cochlea' I used the phrase 'inner ear'. The terms are interchangeable. Michael In a sense. "Inner ear" also includes your semicircular canals. 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 2, 2006 Share Posted January 2, 2006 Nope and nope! The Merkava Mk.2 has a 105 mm gun, so we have regular rounds, the more advanced Mk.3 and Mk.4 has the 120 mm gun with burnable shells. Only the Mk.4 has hyraulic doors for ammunition, tommorow i'll attach a photo of me in the tank. What is the left sight for? is that the thermal NV? 0 Quote Link to comment Share on other sites More sharing options...
M1A1TC Posted January 2, 2006 Share Posted January 2, 2006 The left sight is the optical sight, which is linked to the main gun. It is boresighted, so when you look at it's crosshair, it is excactly where the gun is pointing. The sight on the right is the thermals, which are normally used to fire. When you look at the top of the turret, you can see "dog house" doors, which house the sight. If you use regular rounds, I guess you have to pitch them out quickly. Is there a door on the side of the turret, or do you just throw them out of loader's hatch? Here is a photo of me when I was a loader. Thats a training round, BTW. The red flag means we are locked and loaded. I am also wearing a flak vest [ January 01, 2006, 06:35 PM: Message edited by: M1A1TankCommander ] 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 2, 2006 Share Posted January 2, 2006 We have something called "Back corridor" which is in the rare side of the turret an connects it to the hull, you can "put" there 5 infantry soldiers or fired shells, when it fills up you open the door of the "Back corridor" and kick the shells out. 0 Quote Link to comment Share on other sites More sharing options...
Goatsee Posted January 2, 2006 Share Posted January 2, 2006 You open your mouth when artillery fires and cover your ears. Many people claim this 'equalizes' pressure. I doubt this is actually the case. When I yawn, or over-extend my jaw, I actually have momentary 'deafness'. This is because the tube from the ear to the throat area is blocked. So noise impacting within the air is hitting the eardrum, but the air behind the eardrum is not free to the atmosphere. So by covering one's ears, and 'yawning', you isolate the extreme disturbance from getting to the ear at all. Thats what I believe happens. There is no actual muscle that directly connects to the eardrum or other intricate parts. 0 Quote Link to comment Share on other sites More sharing options...
Splinty Posted January 2, 2006 Share Posted January 2, 2006 Hey M1A1 when were you in 3rd ID? I was with 4/7 INF in Aschaffenberg from 89 to 92. 0 Quote Link to comment Share on other sites More sharing options...
M1A1TC Posted January 2, 2006 Share Posted January 2, 2006 I was stationed in Ft Benning from 1999 till 2001, then I was with 2nd ID in Korea. Are you still in service? 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 2, 2006 Share Posted January 2, 2006 Here is a picture of me, shouting on someone in the comm network, you can see me stanting in the TC position, that photo was taken 5 year ago, during full scale war menuvaring. Sadlly, i cant show a pic from the inside of the tank, because it's highly classified... Oren_m 0 Quote Link to comment Share on other sites More sharing options...
Wicky Posted January 2, 2006 Share Posted January 2, 2006 0 Quote Link to comment Share on other sites More sharing options...
Splinty Posted January 2, 2006 Share Posted January 2, 2006 Originally posted by M1A1TankCommander: I was stationed in Ft Benning from 1999 till 2001, then I was with 2nd ID in Korea. Are you still in service? I'm in the Michigan Nat'l Guard now. I got off of active duty in '92. I saw the 3rd ID patch and thought you might have been with them back then. I was a Bradley grunt back in the day, now I'm a Signal puke. 0 Quote Link to comment Share on other sites More sharing options...
c3k Posted January 2, 2006 Share Posted January 2, 2006 Wicky, If there is some hall of fame for excellence in posting, you should be included for the picture you just sent! Thanks, Ken 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 2, 2006 Share Posted January 2, 2006 Wicky, your shoes are really lovely, where do you get them? 0 Quote Link to comment Share on other sites More sharing options...
gibsonm Posted January 2, 2006 Share Posted January 2, 2006 Slightly back on track. In our tanks, the gunner shouts a response "Firing NOW!" as he closes the circuit to alert everyone what is going on (so the loader and commander remember to get things like arms etc out of the way). The "NOW" part corresponds with the actual squeezing of the trigger. Most American tankers that I've served with use "On the WAY" (and I guess there is an Israeli equivalent) wouldn't this response achieve the same thing as opening your mouth as suggested elsewhere? Also are you guys really allowed to have both live and training ammunition natures on the vehicles at the same time ??!!! Using training or blank rounds whilst having a red AFV flag up is a chargeable offence here in Aust. 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 2, 2006 Share Posted January 2, 2006 In IDF tank we have a similar cycle. After the loader has loaded the round he shouts "loaded", than, the TC confirms that and shouts "fire", only after the gunner heard the "loaded" shout and the "fire" shout he shouts back "firing" and than fires. And that is because we dont enjoy cleaning the turret from the loader's remaines... Oren_m 0 Quote Link to comment Share on other sites More sharing options...
John Kettler Posted January 3, 2006 Author Share Posted January 3, 2006 gunnersman, Noise-cancelling headphones did not, so far as I know, exist until fairly recently, nor was the feature I described in Soviet tanks so described. Am certainly no hearing specialist, so went with description given by Suvorov as to what happens and how. Goatsee, In Cornelius Ryan's THE LAST BATTLE, he tells us that Russian gunners, with their guns so densely packed as to be practically trail spade to trail spade, were told to open their mouths and scream continuously when the barrage commenced. This was specifically to prevent their eardrums from rupturing. Those who didn't or had clogged eustachian tubes bled at the ears. Wicky, Stellar! Absolutely stellar! Regards, John Kettler 0 Quote Link to comment Share on other sites More sharing options...
gibsonm Posted January 3, 2006 Share Posted January 3, 2006 Yep same here. The loader loads the round, checks stowage and closes the loaded safety switch and reports "Loaded". The commander checks everything and orders "Fire". The gunner confirms his sight picture and reports "Firing NOW!!". 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 3, 2006 Share Posted January 3, 2006 Well, i guess that tankers around the world are preety much the same. I just can tell you this, i bet that all the tankers in the wrold hates the winter! 0 Quote Link to comment Share on other sites More sharing options...
gibsonm Posted January 3, 2006 Share Posted January 3, 2006 Actually winter for us is OK, since we have until recently had Leopard (built by the Germans who know something about winter). However recently our tanks have moved to Darwin and we average 40 degrees C outside the tank and about 50 inside (crew's personal sauna). Then we tried putting a armoured Air Cond unit on the back of the turret which added about 5 ton to the turret's weight and totally messed up its balance. Doing cross country stab runs became a lot of fun! Now we are getting M1A1 but I don't know what the cooling is like. I think the Egyptian's modified their M1's for their conditions so hopefully we can see what they did. 0 Quote Link to comment Share on other sites More sharing options...
oren_m Posted January 3, 2006 Share Posted January 3, 2006 I agree that summer can be a bitch, but in winter....my god, all the mud, it's hell! Do you know how sad is it to find out that one of the tracks fell in a middle of a huge muddy swamp?!?! AAAAAA!! I get nightmares for just thinking about it! 0 Quote Link to comment Share on other sites More sharing options...
gibsonm Posted January 3, 2006 Share Posted January 3, 2006 Actually without trying to be picky that sounds like poor driver's appreciation or commander's brief. I'm sure a good commander would have said "makes sure you avoid the #$%^%@^$^$ swamp" Anyway even with that and the sheer fun of trackwork, I would change for all the world. 0 Quote Link to comment Share on other sites More sharing options...
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