h*****g
发帖数: 944 | 1 意外发现 飞机失踪的位置正好在泰国美军基地和新加坡美军基地的中间线上
是不是有个盲区？
飞行员关掉transponder后，故意沿着盲区向西飞行？ |
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o*****D
发帖数: 1563 | 2 Peter Goelz, former managing director of the National Transportation Safety
Board, thinks all this information -- if correct -- ominously suggests that
someone purposefully cut off the transponder and steered the plane from its
intended destination. |
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c******n
发帖数: 5697 | 3 Eleven years ago, a shiny silver Boeing 727 airliner took off from Luanda,
Angola, and became one of the few commercial jetliners to vanish and never
be found.
Massive jet airplanes disappear more often in fiction than in real life, but
it does happen. In 1979, a Boeing 707 with six people aboard was lost in
the Pacific Ocean after leaving Tokyo. And dozens of smaller planes have
gone missing and never been located.
The Aviation Safety Network, a database tracking accidents, lists 80 planes
as "... 阅读全帖 |
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v********d
发帖数: 4413 | 4 有这可能，但伴随着飞机折返向西飞，并且飞了一个多小时，这就不同寻常了。 |
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e******u
发帖数: 3206 | 5 CNN那个专家说故障也会造成预存的航路图丢失，只留下出发地点，飞机自动转向回原
点。 |
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c******n
发帖数: 5697 | 6 最大疑问是为什么在马来和越南雷达监控的交界处突然转向，就是乘雷达跟踪交接时候
的混乱想逃离雷达跟踪 |
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v********d
发帖数: 4413 | 10 这是马来军方自己放的消息，然后又否认。
中方已经正式要求马方核查这个传言。请你注意看新闻。 |
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l****p
发帖数: 27354 | 11 突然转向可以解释为电子故障造成联络中断，机长觉得这飞机没法开了，得回去。
但是，如果真是这样，应该会有人试图拨通手机联系家人。
所以，应该是飞机高空突然一头栽了下去，但如果马来西亚政府报告的地址是马来北部
却找不到残骸，应该是马来撒谎了。
所以，劫机的可能性最大，顾客不知道，于是，被劫飞机飞回去准备撞楼，被马军方导
弹击落，击落地点不在马政府报告的位置，所以找不到残骸。 |
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m*****u
发帖数: 15526 | 12 机组人员嫌疑最大，被乘客劫持可能性不大。因为做的很专业。知道怎么干能让飞机失
联 |
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s**********d
发帖数: 36899 | 14 是啊，同时关掉了几个定位装置，又没有发劫机信号。被劫可能性很小。
★ 发自iPhone App: ChineseWeb 8.6 |
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v********d
发帖数: 4413 | 15 这个雷达是指军方雷达，只要飞机还存在，军方雷达就能跟踪。失联是指地面不能跟它
通讯联系，包括position transponder也被关掉。 |
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v********d
发帖数: 4413 | 16 你说的这是民航雷达，军方雷达不需要这个应答器，只要飞机是金属做的就能跟踪！
点。 |
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d*b
发帖数: 21830 | 18 军用雷达也有，比如常说的“敌我识别器”就是，带自动标绘的民用雷达就更多了，比
如这个，有点钱的游艇上都装 |
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m**********0
发帖数: 737 | 19 没有dsb和弃婴不懂的知识。太厉害了。
您对马来猴子请大神这个怎么评测的？他们那文化怎么这么奇怪。
点。 |
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b*****e
发帖数: 1193 | 21 这个东西我是专家。
DSB，你光说了个mode A，实际目前民航大飞机的应答器是mode A/C/S
可以自报ID， GPS坐标和高度
飞到10000ft以上，必须是mode S |
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s********i
发帖数: 17328 | 22 波音777这么大的飞机，就算把发动机、雷达、电力全关上在各方雷达屏幕上也是个大
亮点，关键是是否有那方雷达发现这架飞机的踪迹，雷达探测的结果是否有记录，没有
记录那就只能依靠执勤人员的自觉了，赶上打扑克睡觉的兵，就没法确定到底什么时刻
在哪儿失踪的。越南和马来西亚的雷达是个啥水平，能记录么？我看靠美军的可能性还
高些，毕竟美军的雷达先进很多，说不定有记录啥的。如果没有记录，执勤的又不负责
，那么用从失联到找人看雷达的时间就可以划定是飞机可能的落点。 |
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x****u
发帖数: 12955 | 23
Air traffic control radar should have record of all traffic at all times
that's within their control. |
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d*b
发帖数: 21830 | 24 你对雷达的认识还处于第二次世界大战那层次。
比如当年共军常用的老掉牙的381雷达就是一个典型，这种雷达基本都是模拟的，变流
机，磁控管，缝隙波导等等无比巨大一玩意，但现代雷达根本不是那样的，随便举个例
子，常见的GPS厂家Garmin的雷达就是全固态微波元件阵列式天线，整个发射接收单元
集成在很小一个天线里面，12V电压驱动，USB接口，下面的信号处理单元就是一台计算
机，你去了哪里，看到了什么都是recorded.
潜艇最常用的Furuno 2维雷达：
集成电子海图的自动雷达标绘仪：
（注意，这套设备你也买得起，比你家得Lexus便宜多了） |
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d*b
发帖数: 21830 | 25 GPS不带通信功能，GPS transponder的通信功能是通过GEOS的卫星实现的 |
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z********i
发帖数: 40 | 27 温习了一下Air crash investigation 的last hour of Flight 11, 发现这次失踪的
MH370的确有不少惊人的相似之处。
被劫持的Flight 11也是在劫机犯发动之前正常爬升到了巡航高度，MH370也是。
Flight 11在被劫持之后直到撞击世贸大厦之前都没有机会发出过SOS或者Mayday警告信
息，因为5名劫机犯先是刺伤了头等舱乘客并用瓦斯类似的东西让头等舱乘客和空乘陷
入混乱，进而撤入经济舱，导致没有时间也没有反应过来第一时间通知cockpit里的机
组人员，致使安全门没有来得及锁死，然后又用box cutter之类的刀具迅速瘫痪了驾驶
员，完全没有时间做出反应。MH370至始至终都没有发出警告信息，911的经验证明劫持
可以做到阻止SOS信号发出的。
Flight 11飞机被劫持后就基本一直保持无线电静默,transponder被关闭。不过美国的
air traffic controller水平很高，始终能知道哪个雷达信号点是Flight 11。他们甚
至还让紧随其后的UA195肉眼确认了飞机的确在飞。可惜不到6min后后者也被劫持。... 阅读全帖 |
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W*****d
发帖数: 4196 | 28 14日更新：
两个定位系统被人为关闭： 飞机12:21am起飞, data reporting system 1：07am 被关
闭，1：21am，就在飞行员说"All right, good night"后，transponder被人为关闭。
尔后飞机换航线往西飞，尔后正常飞行了4，5个小时。现在基本确定飞机掉入印度洋。 |
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g******o
发帖数: 4042 | 29 The engines' onboard monitoring system is provided by their manufacturer,
Rolls-Royce PLC, and it periodically sends bursts of data about engine
health, operations and aircraft movements to facilities on the ground.
Rolls-Royce couldn't immediately be reached for comment.
As part of its maintenance agreements, Malaysia Airlines transmits its
engine data live to Rolls-Royce for analysis. The system compiles data from
inside the 777's two Trent 800 engines and transmits snapshots of
performance, a... 阅读全帖 |
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y*****n
发帖数: 5016 | 30 改变路线，关掉TRANSPONDER，肯定是有什么打算。 |
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d******e
发帖数: 2271 | 31 The data reporting system, they believe, was shut down at 1:07 a.m. The
transponder -- which transmits location and altitude -- shut down at 1:21 a.
m. |
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m******e
发帖数: 1399 | 32 综合各种证据，事情会不会是这样呢？飞机先被什么东西击中，那个物体和飞机数个碎
片掉入中南海。后沉没。飞机燃烧10秒，后火被扑灭或没有着起来然后局部断电。数据
跟通讯系统中断，过了一会transponder 短路。飞机迅速缺氧。飞行员立刻下降高度手
动折返，却没折返到位。继而神智不醒。飞机宅着所有晕了的人以直线滑行直到印度洋
。最后为没油所以是滑进去的没有燃烧。因为速度也慢了。也没有断裂。沉入硬度羊底。
★ 发自iPhone App: ChineseWeb 7.3 |
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M**Q
发帖数: 477 | 33 "There is probably a significant likelihood" that Malaysia Airlines Flight
370 is on the bottom of the Indian Ocean, a senior U.S. official told CNN's
Barbara Starr Thursday, citing information Malaysia has shared with the
United States. Analysts from U.S. intelligence, the Federal Aviation
Administration and the National Transportation Safety Board have concluded
that pings sent to a satellite hours after the plane's last transponder
signal likely came from the missing aircraft, the official sa... 阅读全帖 |
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c******n
发帖数: 5697 | 34 很恐怖的是：目的是要把这架飞机用在另外一个目标上
Each ping that came from the 777's SATCOM included GPS, altitude and speed
data
The transmissions, one person said, were comparable to the plane “saying I
’m here, I’m ready to send data.”
Unknown so far to investigators is what happened to the plane following the
final satellite ping, these people said. Questions remain about the plane’s
status, including what was happening in the cockpit.
But the huge uncertainty about where the plane was headed, and why it
apparently ... 阅读全帖 |
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c******n
发帖数: 5697 | 35 飞机没有掉海里，因为emergency locator beacon没有deploy
这玩意一碰到水就会发信号
The beacons, known as Emergency Locator Transmitters, activate automatically
upon immersion in fresh or salt water, but must remain on the surface for a
distress signal to transmit.
The failure of the beacon to activate could mean that the plane didn't crash
The officials told ABC they believe the plane's data reporting system was
shut down at 1:07 a.m. Saturday, while the transponder transmitting location
and altitude was shut down at 1:21... 阅读全帖 |
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m*****e
发帖数: 10963 | 36 Among the possible scenarios investigators said they are now considering is
whether the jet may have landed at any point during the five-hour period
under scrutiny, or whether it ultimately crashed.
The people said aviation investigators are exploring the possibility that
someone on the plane may have intentionally disabled two other automated
communication systems in an attempt to avoid detection. One system is the
transponders, which transmit to ground radar stations information on the
plane's... 阅读全帖 |
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y*****n
发帖数: 145 | 37 Analyst: 'Deliberate act' shut down communication
Another detail that emerged Thursday seemed to add a new twist to the
mystery. Malaysian officials said two separate communications systems
stopped 14 minutes apart.
The officials said the plane's data reporting system shut down at 1:07 a.m.
Saturday, while the transponder transmitting location and altitude shut down
at 1:21 a.m.
"This is beginning to come together to say that ...this had to have been
some sort of deliberate act" and not a catast... 阅读全帖 |
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g**1
发帖数: 10330 | 38 1 US Theory Is Someone Diverted Missing Plane
WASHINGTON March 14, 2014 (AP)
By JOAN LOWY Associated Press
Associated Press
A U.S. official says investigators are examining the possibility that
someone caused the disappearance of a Malaysia Airlines jet with 239 people
on board, and that it may have been "an act of piracy."
The official wasn't authorized to speak publicly on the matter and spoke
only if not identified. While other theories are still being examined, the
official says key evidence... 阅读全帖 |
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z**********3
发帖数: 11979 | 39
transponder不manually turn off是会自动发送回飞行数据的 |
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g**1
发帖数: 10330 | 40 http://online.wsj.com/news/articles/SB1000142405270230418510457
Malaysia Airlines Flight 370 Probe Sharpens Focus on Sabotage
The investigation into the disappearance of Malaysia Airlines 3786.KU +2.13%
Flight 370 sharpened its focus on sabotage, according to aviation and
industry officials, amid strong indications that one or more people on the
plane deliberately changed its course and tried to mask its location.
Officials suspect two different systems were shut off after the plane took
off l... 阅读全帖 |
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c*****4
发帖数: 1777 | 41 你知道每一分钟头顶上有多少民航在飞么。密集地象银河一样，况且这是一大型民航飞
机。只要不进军事禁区，它又不受军队指挥，军方雷达怎么知道它是不是正常航班呢？
不开Transponder，ATC根本看不见它。何况在晚上，就是要拦截，以当年苏联国防前哨
的空军都失败了好多次，以沿途国家的水平，夜间拦截恐怕够呛。 |
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c******n
发帖数: 186 | 42 国际刑事鉴定专家李昌钰在接受东森纽约特派电话专访时表示，他也认为劫机的可能性
很大，而且劫机客可能不只有两个人。
马航班机失联，各界都找不到原因，不过这起事件也引起国际鉴识专家李昌钰博士的注
意，东森纽约特派特别电访李昌钰，他认为飞机遭挟持的可能性极大。国际鉴识专家李
昌钰∶「通常如果两个人没有枪枝的话，你要劫机不容易，当然可能有第三者，劫机不
是说飞机乘客劫机，也闭O机组人员，也陪愤□M机组人员合作，现在很难讲，所以他们
机舱里应该至少有三个机组人员，不知道有没有第四个人。」李昌钰博士认为，机长和
副机长劫机的可能性也很高，CNN记者进入777模拟舱，高度和位置甚至是时间都显示的
和马航370一样，如果遇到劫机，CNN记者∶「你只要输入密码，不用透过无线电就自动
传输到塔台，通报你被劫机了。」
华尔街日报指出，目前调查人员将飞机消失的主因聚焦在人为破坏，包括可能是机组员
或其他人员刻意操纵班机，也和李昌钰博士的「第三人说」不谋而合，李博士强调，马
国政府错失良机，没有在第一时间就锁定乘客手机讯号追查飞机行踪，现在应尽快彻查
乘客背景调查，或陈鄏陪咫j发现。
=============... 阅读全帖 |
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o*****D
发帖数: 1563 | 43 Highlights of Prime Minister Datuk Seri Najib Razak's statement on MH370
1、It is confirmed that the Aircraft Communications Addressing and Reporting
System (ACARS) was disabled just before the aircraft reached the East coast
of peninsular Malaysia.
2、Later, the aircraft’s transponder was switched off near the border
between Malaysian and Vietnamese air traffic control.
3、The aircraft shown in Royal Malaysian Air Force primary radar previously
is confirmed as flight MH370. This is based on raw sa... 阅读全帖 |
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G***G
发帖数: 16778 | 44 even though the signal transponder was closed,
can gps actively build connection with the airplane?
just like
even though you don't use your cell phone, but if you keep your cell phone
on,
then your cell phone's location can be detected. |
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L***m
发帖数: 4594 | 45 我的车上为了走付费路也必须装个 signal transponder， 每次过都发出滴滴的声音，
但是没有开关的，也不晓得电池是什么 。 |
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d****z
发帖数: 9761 | 46 马航最后联系的机长答复是ALL RIGHT, GOOD NIGHT!,而这个时候飞机的TRANSPONDER已
经被关闭了，CNN管这个曝料叫做GAME CHANGER，疑点已经集中在机长了 |
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y*h
发帖数: 25423 | 47
关闭的是transponder，不是radio。 |
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y*h
发帖数: 25423 | 48
不怎样。不知道说明啥。
不过关闭transponder本身不是一个寻常操作，只有在极特殊情况下才会发生，而且在
关闭后平静地说晚安更不符合这种情况下的反应。 |
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l******6
发帖数: 5698 | 49 关掉transponder就意味着不all right |
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s*y
发帖数: 18644 | 50 机长为啥故意要卖这个漏洞? 为啥不能说完再关transponder? |
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