p******u
发帖数: 14642 | 1 转一个squallgzy对三锅导弹实验的品论：
下面纯粹引用:
好多人在问，我来回答一下。印度烈火5的弹头不用找了，原因见内
根据印度媒体的报道：
http://www.thehindu.com/news/national/article3332940.ece
The fireball created by the explosion of the dummy payload was recorded by
cameras onboard the ships.
空中爆炸了，找个屁
////////////////////
反正三哥不属于正常人类
一般来说开头的几次飞行试验是方案考核性试验，首先要考核的就是防热设计是否成功
。不管是硬回收还是软回收，都要捞回来看一看弹头烧蚀情况如何，应该如何改进设计
。第一次不管烧蚀情况，直接爆炸，从来没听说过。爆炸了怎么知道弹头防热是否成功
？匪夷所思。况且弹头不落地，防热考核都不算结束。
解释：
1，就是这么设计的，不管弹头烧蚀如何，先测试一下弹头引控系统。但是根据印度媒
体的报道，这次是dummy warhead，可能就是个配重。兔子当年研制东五的... 阅读全帖 |
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w*********g
发帖数: 30882 | 2 古有赵王为秦王击缶，以相娱乐，今有.....
====================================================
击卫星为大统领贺，以相娱乐.......
http://freebeacon.com/china-to-shoot-at-high-frontier/
简要翻译：美帝说TG近期将试射代号为Dong Ning-2（“东宁”？是“动能”吧？）的
反卫星武器，击碎位于高轨道（12,000 miles到22,236 miles高，GPS卫星在这个高度
）的卫星靶标，但是因为担心影响到观海同志的总统连任，这个计划被延期到美帝总统
选举之后........
China to Shoot at High Frontier
U.S. Intelligence: China to conduct test of more powerful anti-satellite
weapon capable of hitting GPS, spy satellites, but after U.S. election
BY: Bill Gertz
October ... 阅读全帖 |
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d*b
发帖数: 21830 | 3 试射一次而已，啥时候routine了？美国现在一年的发射次数还比不过土鳖国，连nasa
都快关门了，国际空间站基本是俄毛空间站。Dragon才3吨的payload，还不如一颗通讯
卫星。
你一擦屁眼专家，讨论航天，菜了点。 |
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s****r
发帖数: 31686 | 4 NO
for 747,avg. take off speed is 160-180 and lading is 130-160. of course, it
all depe
nds on weather, payload, etc. |
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y*****a
发帖数: 580 | 5 亮了。。。 500 kg = 225 lb
"Based on a simulation, the officials estimated the rocket can travel more
than 10,000 kilometers (6,200 miles), meaning it could reach the U.S.
mainland from North Korea. It can carry a payload of about 500 to 600
kilograms (225 to 275 pounds)." |
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c****i
发帖数: 688 | 6 三哥的脸皮不是一般厚
quote:
-----
Whether its a fighter or a freight carrier? Can china elaborate. What's it's
useful payload capacity? Whether this new invention a Russian or American
rip off?
Agree (4)Disagree (3)Recommend (1)Offensive
Morgan (Australia) replies to AJAY RANJAN
44 Followers
53 mins ago
______
m... I think it's for this news paper to elaborate, the plane if you look it
up, it's effectively a Chinese version of the C 17 lifter.
Agree (1)Disagree (0)Recommend (0)Offensive
ashish singh (bhop... 阅读全帖 |
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l********k
发帖数: 14844 | 8 早该如此。有人认为这样会让航空公司失去票源，其实不然。瘦子比胖子有钱，这么做
，只会让更有钱的乘客选择乘坐他们的飞机。而且谁也不愿意坐在胖子旁边，所以哪怕
机票价格并不便宜，如果旁边没有胖子，我也会选择这样的航空公司。
说实话，飞机的payload是固定的，胖子多了，只能让每个人带的行李重量减少。这对
于瘦人来说，确实是不公平的歧视。 |
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p**********9
发帖数: 314 | 9 China fires 'anti-satellite rocket'
by: Michael Evans From: The Times, May 18
CHINA has test-fired a new long-range rocket capable of destroying
orbiting satellites, according to US intelligence assessments.
The launch of the interceptor, which reached an altitude of 10,000km, could
pose a serious threat to the US's military communications in the Asia-
Pacific region.
Communications and the navigation of carrier strike groups, surveillance
aircraft and long-range bombers operating from Guam... 阅读全帖 |
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x****u
发帖数: 12955 | 10
You think an unmanned system is easier than manned system? How about an
unmanned system with a human as payload, is that now easier than a human
controlled system? |
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d*****t
发帖数: 7903 | 11 这个不完全是payload的问题，是要求一套生命保证系统，这个重量太大了。 |
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T**********e
发帖数: 29576 | 12 Most rockets are designed to be expendable, burning up in Earth's atmosphere
after delivering their payloads to space. SpaceX wants to develop fully
reusable launch vehicles, which experts say would make spaceflight much
cheaper and more efficient.
The 10-story-tall Grasshopper is a big step in this direction, company
officials say. The rocket takes off and lands vertically, touching down on
four metallic legs back at its launch pad.
【 以下文字转载自 Joke 讨论区 】
发信人: kejer (kejer), 信区: Joke
标 题: 这个看起来很... 阅读全帖 |
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t***h
发帖数: 5601 | 15 http://freebeacon.com/china-conducts-second-flight-test-of-new-
China's military conducted the second flight test of its newest long-range
missile that is capable of hitting targets in the United States with a
nuclear warhead, according to defense officials.
The flight test of the new Dong Feng-41, or DF-41, took place Friday from
the Wuzhai missile launch center in Shanxi province to an impact range in
western China, said officials familiar with details of the tests.
It was the second test of t... 阅读全帖 |
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t***h
发帖数: 5601 | 16 http://freebeacon.com/china-conducts-second-flight-test-of-new-
China's military conducted the second flight test of its newest long-range
missile that is capable of hitting targets in the United States with a
nuclear warhead, according to defense officials.
The flight test of the new Dong Feng-41, or DF-41, took place Friday from
the Wuzhai missile launch center in Shanxi province to an impact range in
western China, said officials familiar with details of the tests.
It was the second test of t... 阅读全帖 |
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t***h
发帖数: 5601 | 17 http://freebeacon.com/china-conducts-second-flight-test-of-new-
China's military conducted the second flight test of its newest long-range
missile that is capable of hitting targets in the United States with a
nuclear warhead, according to defense officials.
The flight test of the new Dong Feng-41, or DF-41, took place Friday from
the Wuzhai missile launch center in Shanxi province to an impact range in
western China, said officials familiar with details of the tests.
It was the second test of t... 阅读全帖 |
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t***h
发帖数: 5601 | 18 http://freebeacon.com/china-conducts-second-flight-test-of-new-
China's military conducted the second flight test of its newest long-range
missile that is capable of hitting targets in the United States with a
nuclear warhead, according to defense officials.
The flight test of the new Dong Feng-41, or DF-41, took place Friday from
the Wuzhai missile launch center in Shanxi province to an impact range in
western China, said officials familiar with details of the tests.
It was the second test of t... 阅读全帖 |
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T**********e
发帖数: 29576 | 19 SpaceX的火箭形状挺有意思，身体细payload粗，和长征不一样。 |
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T**********e
发帖数: 29576 | 20 看这个falcon heavy把三个火箭总共27发动机绑一起发射，价格709刀一磅，估计还有
的赚。Elon的目标是把原有发射成本降低10倍。
SpaceX – Breaking the $1000 per Pound Launch Cost Barrier
John Strickland explains how SpaceX can drive launch costs to less than one
tenth that of competing rocket systems:
“When people see this cost comparison, they ask all over again ‘How
can he (Musk) do that?’ How can the Falcon outperform the Delta by such a
wide margin? The three main reasons seem to be (1) low manufacturing cost (2
) low operational cost (time ef... 阅读全帖 |
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T**********e
发帖数: 29576 | 21 历史上就比土星5小一点， 比其它现有的火箭大一倍。第一级3x9共27个马林发动机，
第二级一个马林发动机。今年发射。
Multiple variants are planned[citation needed] with payloads of 53,000
kilograms (120,000 lb) to low Earth orbit (LEO),21,200 kilograms (47,000 lb)
to geostationary transfer orbit (GTO), and 13,200 kilograms (29,000 lb) to
Mars. |
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T**********e
发帖数: 29576 | 22
主要在价格，火箭能把价格降下来就不简单。小payload有falcon 9覆盖。SpaceX的
falcon 9系列基本就用一两种马林发动机，小火箭3个发动机，大的heavy就棒27个，省
钱啊。
真正省钱还是在回收搞成之后。 |
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T**********e
发帖数: 29576 | 23
Virgin下一步是把小卫星送入LEO，用同样的双体飞机半空发射二级火箭，一百公斤的
payload收费10m刀，还没成功就已经签了不少发射合同。
这个路子要是scaleup，把双体飞机加大，就有点一级发射载具回收的意思了，而且十
分可靠。 |
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T**********e
发帖数: 29576 | 24 SpaceX的Dragon载人飞船已经无人发射成功。今年要发射的falcon 9 heavy能把13吨的
payload发射到火星，还不够载人飞行的。下一代falcon x heavy和falcon xx发射载重
到达120-150吨以后，可以搞火星登陆了。
Elon Musk with his second wife, Talulah Riley, February 2013. |
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T**********e
发帖数: 29576 | 25 X-37B在轨道呆了几百天，不知在干啥，据说偷偷搞别国卫星。
Secret Spaceplane, Mystery Mission
The Air Force’s secret space plane has been up in orbit for nearly 500 days
—a space endurance record. But nearly a year and a half into the mission,
the Pentagon still won’t say what the X-37B is doing up there, or when it
might come back.
The U.S. Air Force boosted the robotic X-37B atop the nose of an Atlas-5
rocket in December 2012. Since then it’s orbited the Earth thousands of
times, overflying such interesting places as No... 阅读全帖 |
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s*********3
发帖数: 117 | 26 我看到的新闻说是从Ping信号的多普勒频移信息里大概猜出速度和位置。
我好奇的问题是卫星的无线接收机会保留每个包得多普勒频移这个信息吗？
普通的无线接收机只是检测到频移然后补偿掉就好了，普通接收机不会保留这个信息吧
。这又不是通讯的payload。
难道是英国的卫星考虑到测速用途，预留了这部分信息。 |
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T**********e
发帖数: 29576 | 28 SpaceX的实用F9火箭一千米回收实验
SpaceX plans to recover stages when customers allow
BY STEPHEN CLARK
Encouraged by the soft landing of a Falcon 9 rocket's first stage in the
Atlantic Ocean after liftoff April 18, SpaceX plans a series of stage
retrieval tests over the next few months, but only on missions where the
launcher has enough leftover fuel to accomplish the complicated re-entry
maneuvers required to safely return a rocket to Earth.
SpaceX hopes the experiments will lead to returning a rocket i... 阅读全帖 |
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l*****i
发帖数: 20533 | 29 看视频，就是加装了几枚小火箭的返回舱。换句话说，把运载火箭payload的一部分用
于这些火箭以及燃料，以实现软着陆。估计用了nasa那个火星探测器的技术， |
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T**********e
发帖数: 29576 | 30 NASA 'Flying Saucer' Launch to Test Mars Landing Parachute Tech
A saucer-shaped vehicle that could help NASA land big payloads on the
surface of Mars is about to take to the skies for the first time.
NASA hopes to launch its Low-Density Supersonic Decelerator (LDSD) test
vehicle — which the agency has dubbed its own "flying saucer" — Thursday (
June 5) from the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii
. The balloon-aided liftoff was originally scheduled for today (June 3), but... 阅读全帖 |
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x****y
发帖数: 1853 | 31 据我所知技术关键是滑轨的材料，必须在高速摩擦运动中耐磨耐高温。所以不能带太重
的 payload. |
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T**********e
发帖数: 29576 | 33 SpaceX to try rocket landing on floating ocean platform, Elon Musk says
The company is expecting to try to land the booster on the platform as part
of their next launch to space. Musk explained that landing a reusable rocket
on the floating platform — which measures about 300 feet long by 170 feet
wide — is a big step toward bringing the company's Falcon 9 rocket back to
dry land. Musk and SpaceX hope to develop reusable rocket systems and
capsules in order to decrease the cost of access to spac... 阅读全帖 |
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T**********e
发帖数: 29576 | 34
土星五LEO payload有120吨，Falcon H只有53吨但已经是地球现有火箭的两倍以上了。 |
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b********n
发帖数: 38600 | 35 Watch Formation-Flying Chinese ‘Yaogan’ Satellites Slip Silently Through
the Stars
http://www.universetoday.com/117009/watch-formation-flying-chin
According to Robert Christy at zarya.info, the Yaogan satellites are imaging
satellites “with a government or military purpose. Some seem to carry
optical payloads and others carry radar. There are also some launches into
orbits very like the US NOSS satellites.” |
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x****u
发帖数: 12955 | 36
2F is for manned spaceship launch. It contained much more redundant safety
equipments and heavier fairing to protect the spaceship.
I don't know why Indians are proud of a rocket that's both 20-30% heavier
than LM3B AND has 20% less payload capacity. Why don't they add another 200
tones of dead weight and say they have the heaviest rocket in the world. |
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k*****r
发帖数: 21039 | 37 代价是附加的飞控发动机和燃料,这样会reduce多少payload ?
re-use发动机,vs 一次性发动机,制造成本差多少?
第一级经过发射,acceleration/de-acceleration, 结构上还可靠吗? |
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m********5
发帖数: 17667 | 38 即使是真的，payload也不能和发射微型卫星相比
希望不是印度的皮卫星...如果是，那是真的骗经费 |
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a*****y
发帖数: 33185 | 39 http://www.scientificamerican.com/article/high-power-microwave-
High-Power Microwave Weapons Start to Look Like Dead-End
Despite 50 years of research on high-power microwaves, the U.S. military has
yet to produce a usable weapon
By Sharon Weinberger | September 12, 2012
E-BLAST
Nature
By Sharon Weinberger of Nature magazine
For some Pentagon officials, the demonstration in October 2007 must have
seemed like a dream come true — an opportunity to blast reporters with a
beam of energy that causes s... 阅读全帖 |
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b********n
发帖数: 38600 | 40 More troubling results from the new F-35 Lightning
http://hotair.com/archives/2015/08/15/more-troubling-results-fr
The NSS study compared all three F-35 variants to foreign fighters — Russia
’s MiG-29 and Su-27 — and found it came up short in a variety of key areas
, including acceleration, combat radius and payload. Such deficiencies would
seriously hamper the U.S. jet in a dogfight. |
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b********n
发帖数: 38600 | 41 Trump: I Will Absolutely Use A Nuclear Weapon Against ISIS
http://realnewsrightnow.com/2015/08/10/trump-i-will-absolutely-
NEW YORK, Ny. – In response to a question regarding his policy on ISIS,
Republican presidential candidate and billionaire Donald Trump told Meet the
Press on Sunday that as Commander-in-Chief, he would authorize the use of
nuclear weapons to combat Islamic extremism. “Let’s face it, these people
are barbarians,” Trump said. “And thanks to Obama’s failed policy in Iraq
and Sy... 阅读全帖 |
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l*****7
发帖数: 8463 | 44 人可以走。
但是，地盘是中国的！
占中国的地盘还独立？
按床铺的逻辑办－－－－核平！!!!!!!
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
发信人: beijingren (to thine own self be true), 信区: Military
标 题: 床铺：我绝对会使用核武器打击ISIS
发信站: BBS 未名空间站 (Mon Sep 7 21:36:57 2015, 美东)
Trump: I Will Absolutely Use A Nuclear Weapon Against ISIS
http://realnewsrightnow.com/2015/08/10/trump-i-will-absolutely-
NEW YORK, Ny. – In response to a question regarding his policy on ISIS,
Republican presidential candidate and billionaire Donald Trump told Meet the
Press on Sunday tha... 阅读全帖 |
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a******o
发帖数: 16625 | 45 你先查查日本同步轨道最大payload比中国多多少。长征六和h2比就是你的jj和驴jj的
对比。中国ppt的长五还在难产中。
[在 swjtuer (灌水和coding都要敲键盘) 的大作中提到：]
：尖端武器方面不要讨论了，日本被限制住了，无法去研发。但人家的火箭发动机和卫
星分辨率，都远在中国之上。
：
：........... |
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t*****a
发帖数: 5180 | 46 麻痹的白痴给点智商吧您，除了四处乱扣帽子，你麻痹还懂啥？
001a要比要和空母比，整个就是比较mediocre的设计，没有啥亮点，电弹射据说也不上
了，J15的有效payload会少不少。
大和在同时代的战列舰中，是个杰出的设计，18寸的大炮，7万吨满排量， 27节速度。 |
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G*******n
发帖数: 6889 | 47 http://news.xinhuanet.com/english/2016-01/15/c_135010577.htm
Source: Xinhua 2016-01-15 01:00:46 [More]
BEIJING, Jan. 14 (Xinhua) -- China has officially begun a new round of lunar
exploration and will send the Chang'e-4 probe to the far side of the moon
in 2018, China's State Administration of Science, Technology and Industry
for National Defense (SASTIND) announced Thursday.
The far side of the moon is never visible to Earth because of gravitational
forces and has never been explored by h... 阅读全帖 |
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r*****g
发帖数: 9999 | 48 啥叫不输，是远超，tacoma最高的payload也就1600磅，一吨是2200磅，不用超载轻松
拿下tacoma。 |
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m**c
发帖数: 7349 | 49
For one thing the payload is so heavy this time that it cousumes a lot of
fuels. For another the separation point is too high to render the landing on
land impossible.
Apparantly the altitude and the remaining fuels determine the landing
location.
My two cents. |
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