作者diechan (小道消息万万岁)
看板Military
标题雷神得标：一千万镁
时间Tue Jan 31 11:26:20 2012
http://tinyurl.com/7eq422l
The contract for the preliminary design of a Pulse Forming Network
(PFN) is part of a larger effort by the U.S. Navy to develop
a multimission weapon system for use on naval warships to defend
and attack with pinpoint accuracy.
Under the contract, Raytheon will provide the research and development
of an advanced Integrated Power Systems power load module that may be
used for PFNs to power future lasers, railguns or radars.
The PFN is a large power system providing the electromagnetic energy
for the railgun projectile, which will travel up to 220 miles in less
than six minutes and exit the atmosphere before hitting its target at
a velocity of 5,000 feet per second.
不过一千万镁开发动力系统(还是一颗电容)，应该只是开头的钱吧
根据
http://news.mydrivers.com/1/215/215757.htm
这个网页写的
3300万焦耳大小的投射能量有很大吗？
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1F：推 jimcheer:还好吧..? 01/31 16:33
2F：推 Raptorjet:电磁炮用的吗? 01/31 17:30
3F：→ MOONRAKER:"to power future lasers, railguns, or radars." 01/31 17:31
4F：→ tachikoma:"旋风阿姆......(下略)" 01/31 17:51
5F：→ MOONRAKER: 罗跟雪拉嘿嘿嘿 01/31 18:26
6F：→ TSW:高中物理如是说：焦耳=质量*(速度^2) 02/01 05:06
7F：→ TSW:国中物理如是说：焦耳=库伦*伏特=秒*安培*伏特 02/01 05:09
8F：→ TSW:假设拿这3300万焦耳来丢M256坦克炮的M829A3 APFSDS (22.3kg) 02/01 05:19
9F：→ TSW:不计损耗，最多获得1216.5m/s的初速...科科 02/01 05:21
10F：→ TSW:不到4000feet/s 02/01 05:29
11F：推 Monoson:楼上动能公式错误结论差了sqrt(2)倍 02/01 09:55
12F：→ Monoson:不过照上面方法推算 设计目标似乎就是相当M256的炮口初速 02/01 10:00
13F：→ TSW:囧，我哪边算错了？ 02/01 12:58
14F：→ TSW:啊，我知道了，动能公式是 1/2*质量*(速度^2) XDDDDDDDDDDDD 02/01 13:00
15F：→ TSW:都还给老师了 02/01 13:00
16F：→ TSW:所以有5644feet/s 02/01 13:03
17F：推 Monoson:不过上面的22.3kg还包含推进药重 电磁炮的话就只要推弹头 02/01 16:46
18F：推 Monoson:所以炮口初速应该还可以再往上提 02/01 16:50