Weapon v0 v400 v_av T400
12.7 mm AP M2 (36" Barrel) 867 680 773,5 0,52 <- 12.7 mm Browning M2
20 mm API (from AP M75) 750 555 652,5 0,61 <- 20 mm Hispano II
20 mm mine shell 805 424 614,5 0,65 <- MG 151/20
20 mm HE 705 490 597,5 0,67 <- MG 151/20
Speeds in m/s, Time to 400 m in s

我很想知道在一堆曲线图里出现的那个AL娘是怎么回事.

卖天然呆

明明是来卖胖次的……要不怎么会用手挡住（……@！&……@……！……！的呢

>400 m were chosen because the firepower comparison I posted above shows that this was about the normal maximum engagement range expected by the USAAF, as evident in the way they harmonized their wing guns.
To further reinforce this point, RAF report "2nd T.A.F./O.R.S. Report No. 43" (which I unfortunately dont' know in its entirety) lists 482 combats as reviewed from RAF gun camera films from Spitfire and Tempest fighters.
Of the 272 "destroyed" claims resulting from these 482 combats, 86 % were from combat distances of 400 yards or less.
The table (1 - 2 % inaccuracy due to rounding in the original report):
600 yards and less: 96 %
400 yards and less: 86 %
300 yards and less: 74 %
200 yards and less: 52 %
So any trade-off improving effectiveness at short ranges is going to have a benefit much greater than the disadvantage at long ranges can be because (just as Blesse pointed out) it's short-range fire that is responsible for the vast majority of kills.

那就不要挡住了

hd3810@163.com





机枪机炮从一战吵到二战。看现在的架势要吵到三战。。。



MH: How much danger was there at 100 meters if the tank would blow up? Would you not have to fly through the debris?
Neumann: After we fired out cannons, we would go to the right or left, but we did not directly fly over the tank. One time a Sergeant Ott was shooting at a Russian Klimenti Voroshilov KV-2 heavy tank that was in between a farm house and a barn. The KV-2 had a big square turret and heavy armor. Ott went down and shot but nothing happened. So he said, "OK, if it does not explode I will make so many holes in it that it will not be any good anymore!" So he went down again and when he was very close to the tank it exploded. The turret flew over his canopy. When we got back to the base he was shaking and kept saying, "I saw the turret over the top of my canopy!"
MH: How low would you have to fly to destroy a tank?
Neumann: For the Stalin we had to fly at 20 or 30 feet...(at) about 300 kilometers per hour. We would be flying that low for maybe five to 10 seconds. If you got them in your sights you only really needed a second or two. Remember, for the Stalin, our guns were adjusted for 100 meters. So, we had to get close to them.
MH: How was the morale in the unit when you arrived in December 1943?
Neumann: It was fine. We knew for what we were fighting. Ever tank I destroyed was one less tank that could possibly get to Germany. It was a fight to the end.