w*****y
发帖数: 3900 | 1 牛人辈出。这回是football player造炸弹。不敢去orlando了。
Two Virginia Tech football players suspended after manufacturing,detonating
an explosive device
BLACKSBURG, Va. -- Two Virginia Tech walk-on football players have been
suspended from the team after being charged with manufacturing and
detonating an explosive device.
Blacksburg Police Lt. Steven Taylor says 20-year-old Joshua Trimble and 19-
year-old Brian Rody were arrested Sunday after a small explosion near an
apartment. Nobody was injured.
Tech spokesma... 阅读全帖 |
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S*A
发帖数: 7142 | 2 你的 mower 有没有离合器的？（刀片是一直转还是合了手柄再转）
你肯定没有什么低级错误例如留在 choke 那挡忘了转到 running,
引擎没油了（机油和汽油）之类的？
这种听上去像是 detonation. 最有可能是你的 carburettor 脏了，
混出来的油比例太低，如果长时间不用的话应该把汽油道出来，已免
汽油挥发后堵塞 carburettor.你可以增加一点点 choke （oil mixing)
看看能不能避免 detonation. 有没有试过 93 的油？如果可以的花烧
一罐看看能不能冲干净。 |
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y*****d
发帖数: 4451 | 3 Taken 1 millisecond after detonation, showing the "Rope Trick"
The spikes seen at the bottom of the detonation are caused by thermal
radiation (approx 20,000 degrees Kelvin, 3 1/2 times hotter than the surface
of the sun) vapourising cables that held the device in place. This is known
as the "Rope Trick"
The mottling effect seen on the surface of the fireball is caused by clumps
of vapourised bomb debris, travelling at several tens of kilometres/second,
hitting the back of the slower expanding f... 阅读全帖 |
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x***e
发帖数: 844 | 4 事件共造成168人死亡，超过800人受伤
/220px-Oklahomacitybombing-DF-ST-98-01356.jpg
http://ffrf.org/legacy/fttoday/1995/may95/oklahoma.html
Christian Terrorism In Oklahoma City
By Dan Barker
When extremists from predominantly Moslem countries commit violence, many in
the media refer to them as "Islamic terrorists." Why is no one calling the
Oklahoma City bombing suspects "Christian terrorists"?
The militias being investigated are called simply "right-wing" and "anti-
government," but these hate groups, like the ... 阅读全帖 |
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y*******n
发帖数: 10103 | 6 哦，原来是用来降温进气，提高填充率。
这套玩意成本是高。
咦，那个什么二战飞机的water injection也有点类似哈，不过它主要防detonation。
直喷机不怎么怕detonation了吧。记得saab在93 turbo上还用过。 |
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e********y
发帖数: 350 | 7 如果你是自己调那要小心呀~ 直接提升涡轮增压有几个方面蛮危险的。一旦离开了原来
的compressor efficiency，涡轮增压的时候压缩空气的温度会几何倍的增加。那原来
的ic就可能不能很好的冷却这个温度。其次，增压越高，ic效率就越低。例如你要
10psi at manifold，那compressor可能其实运行在12psi，2psi被ic拿走了。但如果你
要15psi at manifold，那compressor可能需要输出18psi才能维持。
iat温度高会大大增加detonation的几率（毁引擎的东西），而且你光改boost不调整
fueling的话，可能会很lean，更加增加detonation的几率。
而且，提升增压后，exhaust temp也会飙涨。如果不升级整套turbo 后的exhaust的话
，超高的exhaust temp会长期很伤车。
所以一般推荐提升stock turbo的压力，最好换ic和turbo back exhaust系统。 |
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c*****1
发帖数: 469 | 8 原厂sti也会爆缸，一般是两个原因：1.ringland failure 2.rod bearing坏
造成上述原因的是引擎detonation,而detonation原因是cooling不行 。
在原厂状态下，engine本身没问题，爆缸原因是sti冷却系统完全不过关。
解决方案：
1.安装AOS（air oil separator)
作用：原厂油会自己跑到intercooler和intake里，perrin aos等防止如此。有油进
intercooler会降低cooling效率。
2.安装oil cooler
Perrin oil cooler?
3.换radiator
koyo radiator
楼主本人原厂的11代sti在高温驾驶下爆了。。亏有warranty，赔了个新引擎
老老实实改上面的件，大概1200刀 |
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t*****n
发帖数: 1667 | 9 到目前为止死了65人
http://online.wsj.com/article/SB125645983124706251.html
AGHDAD -- Two large explosions rocked central Baghdad midmorning Sunday,
detonating near Baghdad governorate offices, the seat of the capital's
municipal government.
The force of the explosions blew out windows on many of the floors of the
nearby Mansour hotel, one of Baghdad's best hotels. The ceiling of at least
one floor of the hotel caved in. The hotel hosts the Chinese embassy.
Shortly after the blast, residents and visitors |
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s****1
发帖数: 93 | 10 汗。。。。。
自己查一个词典就很困难么？
The target of a projectile, such as a missile or bomb.
The site directly below, directly above, or at the point of detonation of a
nuclear weapon.
The center of rapid or intense development or change: “The neighborhood
scarcely
existed five years ago, but today it is the ground zero from which designer
shops and restaurants radiate” (Robert Clark).
The starting point or most basic level: |
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z**********e
发帖数: 22064 | 11 David Greenglass, the Brother Who Doomed Ethel Rosenberg, Dies at 92
By ROBERT D. McFADDEN October 15, 2014
“叛徒”格林格拉斯，一场尘封的苏联间谍案
ROBERT D. McFADDEN 2014年10月15日
It was the most notorious spy case of the Cold War — the conviction and
execution of
Julius and Ethel Rosenberg for passing atomic secrets to the Soviet Union —
and it rested
largely on the testimony of Ms. Rosenberg’s brother David Greenglass, whose
name to
many became synonymous with betrayal.
那是冷战中最为臭名昭著的一桩间谍案—— 朱利叶斯与埃塞尔·罗森伯格夫妇(Julius
... 阅读全帖 |
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h******n
发帖数: 749 | 12 I want to know more. I want to know what went through her head when she
pressed on the detonator 20 times. I hope she gets a book deal soon. |
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y****i
发帖数: 1050 | 13 The first appearance of the Tiger on the Eastern Front was unsuccessful. The
first Tigers were issued to the 1st platoon of the 502 Battalion of Heavy
Tanks (Schwere Panzer Abteilung 502). On the 29th of August 1942, the four
Tigers arrived at the Mga railway station near Leningrad. Early that day,
the tanks were unloaded and prepared for battle. At 11:00 AM, the Tigers
went into their battle positions. Major Richard Merker commanded the platoon
, which included four Tigers, six PzKpfw III Ausf.... 阅读全帖 |
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y****i
发帖数: 1050 | 14 The first appearance of the Tiger on the Eastern Front was unsuccessful. The
first Tigers were issued to the 1st platoon of the 502 Battalion of Heavy
Tanks (Schwere Panzer Abteilung 502). On the 29th of August 1942, the four
Tigers arrived at the Mga railway station near Leningrad. Early that day,
the tanks were unloaded and prepared for battle. At 11:00 AM, the Tigers
went into their battle positions. Major Richard Merker commanded the platoon
, which included four Tigers, six PzKpfw III Ausf.... 阅读全帖 |
|
y****i
发帖数: 1050 | 15 The first appearance of the Tiger on the Eastern Front was unsuccessful. The
first Tigers were issued to the 1st platoon of the 502 Battalion of Heavy
Tanks (Schwere Panzer Abteilung 502). On the 29th of August 1942, the four
Tigers arrived at the Mga railway station near Leningrad. Early that day,
the tanks were unloaded and prepared for battle. At 11:00 AM, the Tigers
went into their battle positions. Major Richard Merker commanded the platoon
, which included four Tigers, six PzKpfw III Ausf.... 阅读全帖 |
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s******8
发帖数: 7105 | 16
BAGHDAD, Dec. 22 -- Investigators believe a suicide bomber penetrated
security at a U.S. military base in the northern Iraqi city of Mosul and
detonated an explosive Tuesday that killed 22 people. |
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s******8
发帖数: 7105 | 17
reference
苏联人是7号决定9号出兵的，很明显是是为了抢桃子。
==============================================================
Library of Congress Cataloging-Publication Data
940.5425
G545a
Glantz, David M.
http://www.cgsc.edu/carl/resources/csi/glantz3/glantz3.asp#ch1
Planning reflected the need for swift operations that would preempt Japanese
defense plans, avoid a protracted war, and insure Soviet control over
Manchuria before the Japanese surrendered to Allied powers in the Far East.
Although the Far East Command... 阅读全帖 |
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s******8
发帖数: 7105 | 18
无知者无畏， 哈哈
==================================================================
Test No. 6 is the codename for the China's first test of a three-staged
thermonuclear device and, also its sixth nuclear weapons test. The device
was detonated at Lop Nur Test Base, or often dubbed as Lop Nur Nuclear
Weapon Test Base, in Malan, Xinjiang, on 17 June 1967. With successful
testing of this three-stage thermonuclear device, China became the fourth
country to have successfully developed a thermonuclear weapo... 阅读全帖 |
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w********w
发帖数: 1550 | 19 【 以下文字转载自 Military 讨论区 】
发信人: whoissiohw (油和米), 信区: Military
标 题: （视频）鸟瞰1945-1998世界各国核炸弹 (转）
发信站: BBS 未名空间站 (Fri Nov 15 17:05:38 2013, 美东)
http://area.6park.com/us/index.php?app=forum&act=threadview&tid
1945-1998年间总共有2053次核测爆，被日本某艺术家搜集弄成了这个玩意儿出来，结
果那是相当的震撼。
视频显而易见，一看就能懂，就不翻译了~友情提示：最佳效果一定要开声音看，简直
就是核爆炸测试交响曲。
Japanese artist Isao Hashimoto has created a beautiful, undeniably scary
time-lapse map of the 2053 nuclear explosions which have taken place between
1945 and 1998, beginning with the Manhat... 阅读全帖 |
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h******r
发帖数: 381 | 20 引 言
吸气式发动机的效率在部分程度上受到内部与环境的最大压比制约，理论上压比高的发
动机效率更高。常规发动机通过压气机把空气压缩，再把压缩空气导入燃烧室燃烧，冲
压发动机和脉冲喷气发动机则不同，它们没有专门的压气部件，冲压发动机通过速度压
缩空气，但只有在进口速度超过M a = 2时才能将速度转换成压力，并具有较高的效率
。脉冲喷气发动机在低压室间隙燃烧，因此效率较低。对推进装置来说，爆震燃烧过程
的高燃气压力( > 1. 01×106Pa～1. 01×107Pa)和温度( > 2 000℃)以及快速燃烧都
很有吸引力。因此，过去数十年来，基于爆震燃烧的脉冲爆震发动机( PDE)已引起人们
的广泛注意。
基本概念和工作原理
脉冲爆震发动机（Pulse Detonation Engine，简称PDE）是一种利用脉冲式、周期性爆
震波所产生的高温、高压燃气来产生推理的全新概念发动机。与一般喷气发动机（等压
稳态燃烧）中的爆燃波不同，脉冲爆震发动机（等容非稳态燃烧）中的爆震波（由激波
后紧跟一道燃烧波组成）是以高超音速传播的，因此它能够产生高的燃气压力（13—55
大气压）、燃气温度（大 |
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s*********8
发帖数: 901 | 21 BAGHDAD — A suicide bomber sat for hours Tuesday among hundreds of army
recruits before detonating nail-packed explosives strapped to his body,
killing 61 people and casting new doubt on the ability of Iraqi forces as U.
S. troops head home.
Bodies of bloodied young men, some still clutching job applications in their
hands, were scattered on the ground outside the military headquarters in
central Baghdad. Some of the estimated 1,000 men who had gathered there
before dawn for a good spot in line |
|
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w*********s
发帖数: 2136 | 23 Pictures Prove Mini Nukes Caused 9-11 Devastation
here are only two events known to cause ground-hugging pyroclastic flows (
pictured above).
1. A volcanic eruption
2. A thermo nuclear detonation
by “Dennis”
All research provided by:
www.drjudywood.com and http://911u.org/
On the morning of September 11th, 2001, we were told a fairy tale. That wide
body jets flew into the twin towers and completely destroyed them. Let me
repeat that: Passenger planes (large hollow aluminum tubes) flew into... 阅读全帖 |
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s*********8
发帖数: 901 | 24 CORVALLIS, Ore. – Patrols around mosques and other Islamic sites in
Portland have been stepped up as Muslim leaders expressed fears of
retribution, days after a Somali-American man was accused of trying to blow
up a van full of explosives during the city's Christmas tree lighting
ceremony.
Portland Mayor Sam Adams said Sunday that he beefed up protection around
mosques "and other facilities that might be vulnerable to knuckle-headed
retribution" after hearing of the bomb plot.
The move followed ... 阅读全帖 |
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P*****t
发帖数: 4978 | 25 很科幻
A new gun the US military hopes will help take on the Taliban has been
unveiled.
Called the XM-25 it has been described by the US Army as a 'game changer'.
It uses a laser guidance system and specially developed 25mm high explosive
rounds which can be programmed to detonate over a target.
Richard Audette helped develop it for the US Army and says it's a big leap
forward because it's the first small arms weapon to use smart technology.
Full solution
"The way a soldier operates this is basical... 阅读全帖 |
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b*****d
发帖数: 61690 | 26 当年看mike moore的华摄911说的。
http://www.explodingcigar.com/article992.html
Morocco has offered to send 2000 monkeys to Iraq to be trained to detonate
land mines. Other nations are supporting US efforts as well. Some Arab
nations support action in Iraq but have asked to not be identified. |
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R****a
发帖数: 6858 | 27 空中力量澳大利亚 文章: 中国新型J20隐形战机对F35和F/A-18意味着什么.
来源: googleit 于 2010-12-31 15:09:43 [档案] [博客] 旧帖] [转至博客] [给我悄
悄话] 本文已被阅读：186次 字体：调大/调小/重置 | 加入书签 | 打印 | 所有跟帖
| 加跟贴 | 查看当前最热讨论主题 摘要:
F35基于错误的理论"飞机的机动性无关紧要,让导弹做转圈的活. "
* 第一, 假定F35能撑到可发射导弹的位置, 但是J20和T50拥有低可探测性, 又非得多
快得多, 因而使他们的下视下射导弹拥有先发制人的优势;
* 第二, 更危险的是, J20和T50有超强的应对来袭导弹的措施(包括超机动, 隐形等,超
高速,及电子对抗措施, 让F35会转圈的导弹无法得手.由于自大地认为敌人的导弹无法
穿透F35隐形技术的屏障,F35的相应应对能力要差得多.
* 第三, F35紧急应变能力原本似乎不必要的,但现在J20依仗其隐形和高速会飞快地出
现在打完导弹的F35面前,迫使它进入并不擅长的缠斗.
http://www.ausairpower.net/AP... 阅读全帖 |
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u***r
发帖数: 4825 | 28 http://online.wsj.com/article/SB1000142405274870343950457611622
By MARC CHAMPION
ALEXANDRIA, Egypt—Like the protesters who have flooded the streets of Egypt
in the past week, the country's large minority of Coptic Christians worry
about joblessness and lack of freedoms. But most want President Hosni
Mubarak to stay in power.
Fear of what may follow the removal of Mr. Mubarak, a secular strongman who
has ruled the country for the past 30 years, is making reluctant supporters
out of the country's ... 阅读全帖 |
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c**i
发帖数: 6973 | 29 Christian Jennings, Did China develop its deadly stealth fighter using parts
from a downed U.S. bomber? Daily Mail, Mar 13, 2011.
http://www.dailymail.co.uk/home/moslive/article-1365330
/Did-China-develop-deadly-stealth-fighter-using-parts-downed-U-S-bomber.html
Quote:
"But the plot thickened last month when Qiansao, a Hong Kong Chinese-
language magazine, published a series of essays written in retirement by
former Chinese President Jiang Zemin.
"In the magazine the 85-year-old former premier, ... 阅读全帖 |
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D*A
发帖数: 1169 | 30 Find a wiki term:
Chernobyl compared with an atomic bomb
Far fewer people died as an immediate result of the Chernobyl event than
died of radiation at Hiroshima, and the eventual total is also
significantly less when including those predicted by the WHO to die in
the future.
Due to the differences in half-life the different radioactive fission
products undergo exponential decay at different rates. Hence the
isotopic signature of an event where more than one radioisotope is
involved will change w... 阅读全帖 |
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H****g
发帖数: 14447 | 31 1988年。。。。真是一点都不设防。。。对美国间谍是有问必答。
For starters, Stillman asked the professor, "Does the Chinese nuclear
weapons program have a prompt burst reactor?" Such an experimental reactor,
typically located in a remote area, can operate supercritically for a
fraction of a second and thereby simulate the efflux of radiation and
particles from a nuclear detonation. Yang's answer: "Of course."
Stillman pulled out a map of Sichuan Province. "Can you show me where it is?
" He thought he already knew the answer,... 阅读全帖 |
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b*****e
发帖数: 5476 | 32 CNN
Police Chief Lt. Gen. Ayoub Salangi said Kabul police were on the grounds of
the hotel but had not been able to communicate with anyone inside, since
phone lines were down. He could not confirm any casualties.
A news conference had been scheduled to take place Wednesday in the hotel to
discuss the planned transition of security from international to Afghan
forces. The hotel is on a hill on the outskirts of Kabul and is typically
protected by heavy security.
Three Taliban penetrated that secu... 阅读全帖 |
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a****1
发帖数: 654 | 33 (Norwegian source)
http://www.bt.no/nyheter/innenriks/--Skuddskader-i-alle-kroppsdeler-2541529.html
小道消息：
1）Police confirmed, undetonated bomb found at Utøya. The terrorists
age is 32 years old.
2）Norway hasn't any laws punishing massmurder. The Justice Minister said
that they might use anti-terror legislation but came short of saying it was
relevant. The guy might get 10 years and get out after 5.
3）Live press conference from Oslo Police dep.
Police confirms that the one shooter has been... 阅读全帖 |
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c**i
发帖数: 6973 | 34 Bill Gertz, Report: China Building Electromagnetic Pulse Weapons for Use
Against US Carriers. Washington Times, July 21, 2011.
http://www.washingtontimes.com/news
/2011/jul/21/beijing-develops-radiation-weapons/
("'For use against Taiwan, China could detonate at a much lower altitude (30
to 40 kilometers) … to confine the EMP effects to Taiwan and its immediate
vicinity and minimize damage to electronics on the mainland,' the [National
Ground Intelligence Center's 2005] report said")
Note:
(a) N... 阅读全帖 |
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L*********d
发帖数: 7037 | 35 Lance Cpl. Harry Lew, 21, killed himself with a two- or three-round detonate
from an M249 Squad Automatic Weapon early Apr 3, according to a Marine
Corps investigation.
人完了手很快就没劲儿了。Let off weight on the M249 SAW’s trigger is between
7.9 and 15.7 pounds. |
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r*****y
发帖数: 53800 | 37 1931年，德国已经有了500多万失业者，相当于全国成年人口的四分之一。他们的生活
几乎全无着落，雇人的单位少得可怜。无论是保守党、社民党，还是共产党，都只知道
在议会和刊物上互相批评，“主义”提了一大堆，但什么解决现实问题的具体方案都拿
不出来。
纳粹党则反其道而行之：基本上不和别人争辩理论的它，此时几乎被建成了一个大公司
，党员们无不全心全意地投入到德意志人民生产自救的活动中去：有搞市场情报的，有
搞推销的，有搞组织的，有搞运输的，有搞培训的，有搞财会的，对穷人们有求必应，
在生活的方方面面照顾、体贴他们，简直和宗教组织或红十字会一样。不管什么人，只
要一加入他们的行列，便能保证天天吃饱肚皮，从此不再失业。工人们不领工资－反正
此时马克的价值同废纸一样－而是领大锅饭和一些实物补贴，比如衣服、工具之类，还
负责介绍福利住宅。
对劳苦大众来说，这是多么大的一个刺激啊！负责发放大锅饭的纳粹党员一边往穷人们
的碗里倒土豆、面包和副食，一边淳淳善诱地对他们说：“您瞅，咱们这国家披山带河
，沃野千里，要物资有物资，要科技有科技，年年得诺贝尔奖，物理、化学、医学，照
单全收过。可说起这经济，咱就... 阅读全帖 |
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m**d
发帖数: 21441 | 38 【 以下文字转载自 Joke 讨论区 】
发信人: sate (blah), 信区: Joke
标 题: Re: 我靠，把外星人飞碟炸出来了
发信站: BBS 未名空间站 (Fri Feb 10 13:28:39 2012, 美东)
云雾弹啊，两步很明显。mix加detonation。 |
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s*********8
发帖数: 901 | 39 A Michigan man whose son died in Iraq has burned the state flag of New
Jersey after New Jersey flew its flags at half-staff in memory of Whitney
Houston last week.
"They're watering down the term of what a true hero is these days," John
Burri told ABC News. "I thought it was offensive to every family's fallen
solider out there, and it cheapens the meaning of lowering the flag."
The 60-year-old's decision to torch the New Jersey flag on his Wyoming, Mich
., patio grill came after New Jersey Gov. ... 阅读全帖 |
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c*****2
发帖数: 899 | 40 小列岛--大问题：尖阁列岛／钓鱼岛及其历史地理在中日关系中的重要性
加文•麦考马克 Gavan McCormack*
尖阁列岛开拓纪念日
2010年12月，冲绳石垣市（日本法律将此列岛归属于该市管辖）通过议案宣布将1月14
日定为“尖阁列岛开拓纪念日”，以纪念116年前日本内阁将此列岛划为日本领土的日
子。中国立即表示了抗议。
石垣市的举动可援引自2005年岛根县议会通过“竹岛日”，以纪念日本兼并竹岛100周
年的日子。该岛目前置于韩国的实际控制和管理之下，韩国方面称之为独岛。岛根县的
举动招来了韩国方面的强烈抗议。此次来自中国的抗议不会比韩国温和。为什么这些贫
瘠的、只有濒于灭绝的短尾信天翁栖息的、无人居住的礁石会对这些国家有如此重要性
？这些岛屿到底属于哪个国家？怎样才能解决领土争议？
事件经过
2010年9月7日早上，在此列岛附近海面捕鱼的中国闽进渔5179号渔船两次和日本海岸警
卫队船发生碰撞，日本称之为尖阁列岛，中国和台湾称之为钓鱼岛或钓鱼台（注1）。
此列岛实质上属于日本的管辖，但是中国和台湾均宣称对此拥有对主权。中国船长詹奇
雄拒绝服从日本海岸警卫队船要求其离... 阅读全帖 |
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w********t
发帖数: 12853 | 41 国际人权组织揭露叙利亚反政府武装违反人权, 以及犯有其它战争罪行.
Human Rights Watch (HRW) is accusing the Syrian opposition of violating
human rights laws and committing war crimes during the 18-month long civil
war.
They claimed that, "armed opposition groups have subjected detainees to ill-
treatment and torture and committed extrajudicial or summary executions in
Aleppo, Latakia, and Idlib."
More than 20,000 people have been killed since the start of the conflict and
over 250,000 have fled Syria, according to the U.N.
Some... 阅读全帖 |
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r***n
发帖数: 553 | 43 http://www.bu.edu/today/2013/grad-student-killed-in-blasts/
This story will be updated throughout the day.
One of the victims killed by blasts at the Boston Marathon on Monday has
been identified as a Boston University graduate student.
Lu Lingzi (GRS’15), a graduate student in mathematics and statistics, was
one of three friends who watched the race near the finish line. Another of
the three students, Danling Zhou (MET’14), was injured, and is in stable
condition at Boston Medical Center.
Rober... 阅读全帖 |
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w**********2
发帖数: 764 | 44 http://www.nytimes.com/2012/04/29/opinion/sunday/terrorist-plot
Terrorist Plots, Hatched by the F.B.I.
By DAVID K. SHIPLER
Published: April 28, 2012
THE United States has been narrowly saved from lethal terrorist plots in
recent years — or so it has seemed. A would-be suicide bomber was
intercepted on his way to the Capitol; a scheme to bomb synagogues and shoot
Stinger missiles at military aircraft was developed by men in Newburgh, N.Y
.; and a fanciful idea to fly explosive-laden model planes ... 阅读全帖 |
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r***n
发帖数: 553 | 45 http://edition.cnn.com/2013/04/24/us/boston-attack/index.html?h
Father of Boston bomb suspects to fly from Russia to U.S.
(CNN) -- Hours after talking at length with U.S. and Russian authorities,
the father of the two suspects in last week's deadly Boston Marathon attack
is set to fly to the United States -- and cooperate with authorities -- an
activist working with the family told CNN.
Anzor Tsarnaev told Russia's state-run RIA Novosti that he and his wife,
Zubeidat, will leave the semi-autonom... 阅读全帖 |
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t**********8
发帖数: 1683 | 46 应该是脉冲爆震发动机（PDE，Pulse Detonation Engine），是一种基于爆震燃烧的新
概念发动。爆震燃烧产生的爆震波使可爆燃料的压力、温度迅速升高（压力可高达100
个大气压，温度可达2000℃）。因此，爆震燃烧的发动机可以不用传统的压气机和涡轮
部件就达到对气体进行压缩的目的，使结构大大简化，成本大大降低。此外，由于爆震
波的传播速度极快，达到每秒几千米，因此，整个燃烧过程接近定容燃烧，由于定容燃
烧的热循环效率大大高于定压燃烧（普通的发动机都是定压燃烧），达到49%（定压燃
烧效率为27%），因此，采用爆震燃烧的推进系统可大大改善性能。当爆震频率很高时
（达到80~100HZ），就可以产生连续的推力。 |
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c*******2
发帖数: 617 | 47 A "Fat Man" bomb was dropped over Nagasaki, Japan, on Aug. 9, 1945, near the
end of World War II. Released by the B-29 Bockscar, the 10,000-pound weapon
was detonated at an altitude of approximately 1,800 feet over the city. The
bomb had an explosive force (yield) of about 20,000 tons of TNT, about the
same as the bomb dropped on Hiroshima. Because of Nagasaki's hilly terrain,
however, the damage was somewhat less extensive than of the relatively flat
Hiroshima.
地形。 本班高手如云， 都说对了。 |
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t***e
发帖数: 3601 | 48 SANTIAGO DE COMPOSTELA, Spain (AP) - A Spanish train that hurtled off the
rails and smashed into a security wall as it rounded a bend was going so
fast that carriages tumbled off the tracks like dominos, killing 80 people,
according to eyewitness accounts and video footage obtained Thursday.
An Associated Press analysis of video images suggests that the train may
have been traveling at twice the speed limit for that stretch of track.
Spain's government said two probes have been launched into the... 阅读全帖 |
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w********w
发帖数: 1550 | 49 http://area.6park.com/us/index.php?app=forum&act=threadview&tid
1945-1998年间总共有2053次核测爆，被日本某艺术家搜集弄成了这个玩意儿出来，结
果那是相当的震撼。
视频显而易见，一看就能懂，就不翻译了~友情提示：最佳效果一定要开声音看，简直
就是核爆炸测试交响曲。
Japanese artist Isao Hashimoto has created a beautiful, undeniably scary
time-lapse map of the 2053 nuclear explosions which have taken place between
1945 and 1998, beginning with the Manhattan Project’s “Trinity” test
near Los Alamos and concluding with Pakistan’s nuclear tests in May of 1998
. This leaves out North Korea’s two... 阅读全帖 |
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b********n
发帖数: 38600 | 50 http://theweek.com/article/index/254400/what-would-a-us-china-w
Imagine this: In the early morning, a barrage of more than 1,000 Chinese
ballistic and cruise missiles bombard Taiwanese civilian and military
targets.
As the U.S. Air Force stationed in Okinawa prepares to rush to the aid of
its sworn ally, Chinese cyber attacks wreak havoc on America's air defense
and targeting systems. A second volley of ballistic missiles detonates in
space, destroying critical military satellites, while a third... 阅读全帖 |
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