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#92
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Subject: Instructors: is no combat better?
From: "Gord Beaman" ) Ok...what calibre rounds was that Art?. Your observations certainly wasn't true for the .303 calibre Browning machine gun We had no .303's. Only .50 caliber heavy mg's. Arthur Kramer 344th BG 494th BS England, France, Belgium, Holland, Germany Visit my WW II B-26 website at: http://www.coastcomp.com/artkramer |
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On Thu, 11 Mar 2004 05:13:36 GMT, "Gord Beaman" )
wrote: (ArtKramr) wrote: Actually there was an error between regular rounds and tracer rounds as well. On a strafing mission you could aim the tracers and see the ground kick up well behind the tracers. Big difference in ballistic coefficient between the two Aim the tracers and you would shoot over the target unil you corrected.. Arthur Kramer Ok...what calibre rounds was that Art?. Your observations certainly wasn't true for the .303 calibre Browning machine gun. I've fired likely 20,000 rounds from them in ASW B&G flights and I cannot see any difference between the trajectory of FMJ ball ammo and FMJ tracer rounds. Our belts were set up with every fifth round being a tracer and shooting at a smoke marker on the sea surface it's very easy to see where the rounds are hitting, likely much more visible than on land but I haven't done that mind you. I found it more effective to use the results of the water hits rather than to use the gunsight actually. Get them shooting close to where you needed to with the sight then watch were they were hitting and correct slightly before firing the next burst and so on. Now I admit to being only 23... far too young to have been spraying bullets around in WW2... But I hunt wild goats and deer with a '40 Ishapore armoury .303 SMLE Mk1 III* with the stock cut down... a damn fine hunting rifle that with a 4x scope will down a beer can at 200 metres.. Here in NZ there is occasionally WW2 army surplus tracer rounds for the .303 available, and firing those and normal army surplus ball theres no noticable difference in point of impact... |
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On Thu, 11 Mar 2004 19:37:20 +1300, rnf2
wrote: Here in NZ there is occasionally WW2 army surplus tracer rounds for the .303 available, and firing those and normal army surplus ball theres no noticable difference in point of impact... It would be more than a bit stupid to introduce a tracer round designed to assist spotting and accuracy with the ball ammunition, which actually had divergent ballistics. Gavin Bailey |
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In article ,
Howard Berkowitz writes: In article , (Peter Stickney) wrote: In article , "Kevin Brooks" writes: "Howard Berkowitz" wrote in message ... Seriously, would anyone care to speculate that if aircraft gunner was still a tactically useful skill, how much virtual reality simulator time (e.g., in at least a 3-axis-of-motion device) would a gunner get before going to a combat unit? Aggressor simulators only, or perhaps a few pilots that have flown the aggressor ship manipulating the target? I suspect temperature, noise, fumes, etc. would all be part of the simulator. Heck, they used "simulators" of a sort like that during WWII. My dad, who was a gunner on a B-29, remembers standing in the back of a truck that drove along while the trainee took shots at model aircraft. Somebody from the Film Industry (Might have been Disney) developed a prejection system using a hemispherical dome with a turret inside. They had some sort of system to measure tracking errors. And then, there was Operation Pinball, the ultimate simulator. Real bombers with real turrets, but the .50 cals have been replaced with .30 cals firing frangible (break up on impact) bullets. The targets are specially armored P-63s that make passes on the student gunner's airplane. There are acoustic sensors in the P-63s that can hear the impact of the bullets on the skin for measuring the number of hits. That is _very_ realistic. I think, all in all, we could do it more cheaply with virtual reality. Operation Pinball could do G-forces better, although a simulation platform with multiple degree of freedom movement can get awfully close. For a bomber-type platform, G forces probably weren't all that relavant. Not only were the G limits fairly low, but G onset was low as well. What would be more important would be simulating the environment of the guys firing manually operated guns, such as the Waist and Radio Compartment guns on a B-17. There you've got a bunch of factors that change - the force of teh windblast on the gun barrel, the narrow field of view, the wind blast, and the intense cold of standing at an open window in -50 degree air while a 140 mph wind (EAS) blows past. (What they ended up doing was designing enclosed gun positions, with power boosted gun mounts. Of course, the computerized Fire COntrol Systems of the B-29 and later airplanes took all of that away, with the gunner's skills changing more to mastering the switchology of the system, and learning how to track smoothly in Az?El and range. (Which is a lot like patting your head while rubbing your stomach). When the radar systems came out, in the B-36 and later bombers, gunnery was even more detached. The gunner detected teh target on radar, locked the radar on, and followed up the automatic tracking. That became something that could be done easily on the ground, or practiced while in the air (Injecting synthetic targets into the radar system using a signal generator) on regular flights. Pinball actually stuck around for quite a while. The last SAC gunnery class to use the RP-63s and frangible bullets was in 1948. -- Pete Stickney A strong conviction that something must be done is the parent of many bad measures. -- Daniel Webster |
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In article ,
"Jeff Crowell" writes: Peter Stickney wrote: And then, there was Operation Pinball, the ultimate simulator. Real bombers with real turrets, but the .50 cals have been replaced with .30 cals firing frangible (break up on impact) bullets. The targets are specially armored P-63s that make passes on the student gunner's airplane. There are acoustic sensors in the P-63s that can hear the impact of the bullets on the skin for measuring the number of hits. Wooden bullets, if I recall correctly. An old family friend, now passed on, experienced some of this. Lead dust in a Bakelite matrix, actually. There were .30 caliber rounds with wooden bullets, though. They were used with some models of Rifle Grenade Dischargers. Later models of Grenade Dischargers used blank cartridges to propel teh grenade. (That's one of the reasons that the M1903 Springfield was retained in the Infantry Squad until late 1944/early 1945. It was real easy to fire grenade from it. Garands required a whole lot of fiddling (You had to add & remove parts from the gas system - not something you want to do in combat) and you didn't get any better rate of fire, since the blank rounds had to be manually loaded into the rifle. He said the ballistics of the frangible bullets were so far off from Real Life (tm) that the usefulness was limited. Yes, the ballistics were different. But if you're not mixing ammunition types in the same belt, that's really not all that important. (And I'm sure that the RP-63 pilots would be a lot happier if that didn't happen) The sights, and the cams & springs in the lead-computing sights used at the time Late 1944 on) would be recalibrated to provide the same sight picture that you'd get with service ammunition in a .50 cal. -- Pete Stickney A strong conviction that something must be done is the parent of many bad measures. -- Daniel Webster |
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Presidente Alcazar
wrote: On Thu, 11 Mar 2004 19:37:20 +1300, rnf2 wrote: Here in NZ there is occasionally WW2 army surplus tracer rounds for the .303 available, and firing those and normal army surplus ball theres no noticable difference in point of impact... It would be more than a bit stupid to introduce a tracer round designed to assist spotting and accuracy with the ball ammunition, which actually had divergent ballistics. Gavin Bailey Of course...that's why I questioned him. It sounds odd certainly why the 50 cal round would do that when the .303 doesn't. Certainly does sound strange what the purpose could be. Is it possible that you 'mis-remembered' Art?. I'd appreciate a calm answer here Art rather than a 'blast for doubting your word'. You have three people (at least) who find your story strange. -- -Gord. |
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![]() "ArtKramr" wrote in message ... In conjunction with your comment about the gunner's remarks to you; if simple aerodynamics wasn't a part of every gunner's training during the war, it most surely should have been. What this gunner was telling you might have been from his training knowledge base or simply as the observed result of his personal experience. The end result would be the same for recognizing what the fighter was about to do, but the big difference would have been the advantage to gunners having this knowledge up front going into combat as opposed to finding it out through operational experience. Every gunner out there should have had at least some basic knowledge of positive and negative g as that knowledge relates to a firing pass by a fighter. Those who didn't had to learn the hard way. Gunners being taught a few simple facts about g and vectors would have saved many lives........ and as this knowledge relates to a firing pass, could have been taught in just a few minutes during training. The simple truth of it is that if the fighter rolled inverted during the pass, in order to pass over you he would have to bunt the airplane into negative g, and the odds of this happening vs going the positive g route under you would have all but been a sure bet that he would go positive under you; hence the lead would become predictable based on the odds. I should add that there were a few German fighter pilots who routinely would go negative, but never offensively, only defensively. Erich Hartmann was one of them, and he was not in the theatre. I've always wanted to ask a gunner from the period if simple aerodynamics was indeed taught in gunnery training to help with prediction lead solution, but somehow I've always forgotten to ask :-) If there are any gunners out there who can answer this, perhaps they will post. Dudley I think the answer would be no. When I went through gunnery training on the way to bomb school they didn't even teach us about that. And the first time I heard it, it is was totally new to me. I had to really see it to believe it. And when I saw it I thought, "why the hell is he coming in on his back? Crazy Krauts" Arthur Kramer 344th BG 494th BS England, France, Belgium, Holland, Germany Visit my WW II B-26 website at: http://www.coastcomp.com/artkramer Art: Did you guys use the Waller Gunnery Trainer? See: http://www.cineramaadventure.com/trainer.htm http://www.widescreenmuseum.com/widescreen/waller01.htm Waller was an interesting guy. He invented water skies and Cinerama, among other things. Simpler WWII gunnery trainers were still be used in arcades in San Diego in the early 1970s. Joe -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#99
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Subject: Instructors: is no combat better?
From: "Gord Beaman" ) Date: 3/11/04 9:46 AM Pacific Standard Time Message-id: Presidente Alcazar wrote: On Thu, 11 Mar 2004 19:37:20 +1300, rnf2 wrote: Here in NZ there is occasionally WW2 army surplus tracer rounds for the .303 available, and firing those and normal army surplus ball theres no noticable difference in point of impact... It would be more than a bit stupid to introduce a tracer round designed to assist spotting and accuracy with the ball ammunition, which actually had divergent ballistics. Gavin Bailey Of course...that's why I questioned him. It sounds odd certainly why the 50 cal round would do that when the .303 doesn't. Certainly does sound strange what the purpose could be. Is it possible that you 'mis-remembered' Art?. I'd appreciate a calm answer here Art rather than a 'blast for doubting your word'. You have three people (at least) who find your story strange. -- -Gord. No blast. Doubt my word all you like. But tnone of these three people ever fired a 50 caliber did they? Different guns of different calibers shoot differently. I own 10 shotguns of different gauges and no two shoot exactly in the same place in the same way.. To assume because you shot a 303 every gun in the world shoots exactly in same way is not a reasonable conclusion. And note that this reply is far more well mannered than the flames you have been throwing at me in every post the last few months. Arthur Kramer 344th BG 494th BS England, France, Belgium, Holland, Germany Visit my WW II B-26 website at: http://www.coastcomp.com/artkramer |
#100
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![]() "ArtKramr" wrote in message ... Subject: Instructors: is no combat better? From: "Gord Beaman" ) Date: 3/11/04 9:46 AM Pacific Standard Time Message-id: Presidente Alcazar wrote: On Thu, 11 Mar 2004 19:37:20 +1300, rnf2 wrote: Here in NZ there is occasionally WW2 army surplus tracer rounds for the .303 available, and firing those and normal army surplus ball theres no noticable difference in point of impact... It would be more than a bit stupid to introduce a tracer round designed to assist spotting and accuracy with the ball ammunition, which actually had divergent ballistics. Gavin Bailey Of course...that's why I questioned him. It sounds odd certainly why the 50 cal round would do that when the .303 doesn't. Certainly does sound strange what the purpose could be. Is it possible that you 'mis-remembered' Art?. I'd appreciate a calm answer here Art rather than a 'blast for doubting your word'. You have three people (at least) who find your story strange. -- -Gord. No blast. Doubt my word all you like. But tnone of these three people ever fired a 50 caliber did they? Different guns of different calibers shoot differently. But you are not talking about different guns of different calibers. You are talking about a single gun of a single caliber firing what reportedly was ammunition with matching trajectories. As to your word, who in his right mind is NOT doubting it given your performance over the last couple of weeks? Brooks I own 10 shotguns of different gauges and no two shoot exactly in the same place in the same way.. To assume because you shot a 303 every gun in the world shoots exactly in same way is not a reasonable conclusion. And note that this reply is far more well mannered than the flames you have been throwing at me in every post the last few months. Arthur Kramer 344th BG 494th BS England, France, Belgium, Holland, Germany Visit my WW II B-26 website at: http://www.coastcomp.com/artkramer |
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