http://en.wikipedia.org/wiki/A-10_Thunderbolt_II
The massive shells and high muzzle velocity allow the Avenger to destroy heavily armored main battle tanks in as little as 6 direct hits. The gun is accurate as well, capable of placing 80% of its shots within a 30-foot wide circle from a distance of 1 mile while the aircraft is in flight.
復仇者的沉重砲彈與高炮口初速 , 使得復仇者只需要六發直接命中彈就可摧毀裝甲厚重的主戰坦克 . 另外即使在 A-10 飛行時 , 在一英哩之外發射復仇者機炮 , 80% 的炮彈將集中於 30 英尺的彈著圈內 .

The A-10 also initially lacked systems to compute target range or impact points, greatly limiting its ability to deliver weapons other than cannon and rocket fire (in direct, visual-range attacks) or the self-guided AGM-65 Maverick missile, whose own sensors displayed imagery in the A-10's cockpit. Often times this small monitor would provide the only source of imagery for missions that took place in dark environments. Much later in the 'Warthog's' career, the Low-Altitude Safety and Targeting Enhancement (LASTE) upgrade provided computerized weapon-aiming equipment, an autopilot, and ground-collision warning system. The A-10 is now compatible with night-vision goggles for low-light operation. In 1999, aircraft began to be given Global Positioning System navigation systems.
A-10 有升級到 (LASTE) 低高度安全與尋標增強 , 可以提供電腦化武器瞄準 , 自動導航以及撞地警告系統 . 目前在出低光度任務時 , A-10 也配備相容的夜視鏡 . 自 1999 年起配置全球導航系統 .

http://www.globalsecurity.org/milit...rcraft/a-10.htm
Thunderbolt IIs have Night Vision Imaging Systems (NVIS), compatible single-seat cockpits forward of their wings and a large bubble canopy which provides pilots all-around vision. The ACES-II ejection seat safely operates from 518 miles per hour down to zero speed and zero altitudes.

Avionics equipment includes communications, inertial navigation systems, computer-aided fire control and weapons delivery systems, electronic countermeasures, target penetration aids and self-protection systems. The A-10 employs both electronic and infrared countermeasures against enemy weapons systems. The weapons delivery system incorporates a heads-up display that provides the pilot with references for flight control and weapons employment. The weapons delivery systems include head-up displays that indicate airspeed, altitude and dive angle on the windscreen, a low altitude safety and targeting enhancement system (LASTE) which provides constantly computing impact point freefall ordnance delivery; and Pave Penny laser-tracking pods under the fuselage.

http://en.wikipedia.org/wiki/Shell_(projectile)
Large calibre APFSDS projectiles are often fired from smooth-bore (unrifled) barrels, though they can, and are often fired from rifled guns. This is especially true when fired from small to medium calibre weapon systems. Although APFSDS projectiles are normally made from high density metal alloys; tungsten heavy alloys (WHA) or depleted uranium (DU), maraging steel has been used for some early Soviet projectiles. Even though they have a lower penetration performance compared to DU alloys, the preferred material in non-Russian/UK/US countries are now WHAs, due to their more benign nature. DU alloys suffer from radiological and toxic hazards, but do offer greater penetration for a variety reasons (density, self-sharpening).

http://en.wikipedia.org/wiki/Armor-..._shot_and_shell

depleted urinium (DU)
指的是分離出大部分 U235 的鈾 , 那麼 U238 有沒有放射性 ? 當然還是有 , 它的半衰期是 4.47*10^9 年 , 主要是釋出 alpha 粒子 .


嗯 ! 等你多用機炮打幾次地靶就會懂了 . 難道飛機的機炮都是裝好看 , 還是拿來賭運氣 , 還是看誰的塞比較大 ?

回題 ! 其實還不必想到武士刀砍貧鈾彈這種很難想像的狀況 , 前面不是講過用鋼筋就可以打斷武士刀的事實嗎 ? 武士刀硬而利 , 砍殺沒槍沒炮的南京平民也許好用 , 只是碰上軟而韌的鋼筋/鋼絲鞭的時候一樣會被震碎 . 至少還沒見過可以砍斷拇指粗鋼筋的武士刀 , 倒是聽過同學笑談提著鋼筋追打本來拿武士刀耀武揚威小混混的往事 .

當然還可以想像一下 , 如果國民政府當年像美國開發西部一樣 , 沒有禁止人民擁槍自衛 . 矮鬼的武士刀恐怕還沒出鞘就在百公尺外被爆頭了 . 這也是當年老美打跳島戰術時 , 打到最後都是用槍掃射拿著武士刀群起衝鋒的矮鬼 . 當然槍聲停了之後就可以不費吹灰之力撿到很多武士刀 . 這也是老美熱愛射火雞的原因之一 .