印度2010年首射：北京时间4月15日18:57，印度GSLV-D3发 ...

不管如何抢个沙发先

不叫失败，叫布朗运动成功

低温上面级点火不久后失败。

Geosynchronous Satellite Launch Vehicle D3 failed after launch of 505 second. GSLV D3 sucessfully completed first 2 stage and than failed at 3 stage. ISRO said they will try again after 1 year.

LAUNCH OF GSLV-D3 FAILS: ISRO
ITGD Bureau
New Delhi/Sriharikota (Andhra Pradesh), April 15,2010


Minutes after the Indian Space Research Organisation (ISRO) launched its ambitious Geosynchronous Satellite Launch Vehicle (GSLV-D3) on Thursday afternoon, the rocket deviated from its scheduled path and the link with it was lost.

While the fate of the rocket was yet to be known, ISRO chairman K. Radhakrishnan was quick in admitting that the launch had failed.

GSLV-D3 was country's first rocket powered by a totally indigenous cryogenic engine. Its successful launch would have seen India through to an elite club comprising only the US, Russia, China, Japan and the European Space Agency.

The rocket blasted off from the Satish Dhawan Space Centre at 4.27 pm. The 416-tonne launch vehicle was slated to inject GSAT-4, an advanced communication satellite weighing 2,218 kg into geo transfer orbit (GTO), 36,000 km away from the earth.

Though the first three phases of launch were successful, the rocket started deviating from its path after about 8 minutes. Soon after, the link with it was lost.

敢顶着FGW的气场行动？三哥真牛~~同情一下

这个~~丢失火箭目标，是个啥意思~~不明白

此帖要火

上面级试验时间不够，虽然是山寨毛子的，还是要谨慎些，阿三太心急了点。

又丢失目标……{:ya:}

netbug 发表于 2010-4-15 20:17


    就是飞着飞着就不见了

回复 7# netbug


    跟踪不上了，丢失遥测信号

Bangalore: India’s effort at joining the elite club of space faring nations with indigenous cryogenic fuel technology hit a roadblock on Thursday as the geo-synchornous satellite launch vehicle (GSLV-D3) carrying the geo-stationary experimental satellite (GSAT-4) ‘deviated’ from its path.

The rocket was launched at its scheduled time of at 16.27 IST from the Sriharikota spaceport in Andhra Pradesh. ISRO chairman K Radhakrishnan informed those present at the location that though the ‘cryogenic engine ignited, the other two linear, control rockets failed to work up the ignition.’



As a result, the ‘controllability’ to steer the rocket on its path was lost at an altitude of 60kms. He said Indian scientists had worked hard for the past 18 years and that they would go for another launch within a year.

The launch was normal till the second stage when after 500 seconds, the rocket ‘tumbled’ off its path and data link to it was also lost. He said detailed analysis would be carried out to determine what caused the deviation from flight and why the systems did not work at time.

"Mission objectives were not fully met," he declared.

The crucial launch exercise was about 19-20 minutes, with the first stage taking 150 seconds (2.5 minutes) to lift-off and soar into the sky. The second stage was fired for 290 seconds (4.8 minutes) to zoom further and shut off to fire the cryo stage to enter the higher earth orbit in the next 12 minutes. It is this stage that didn’t go as planned.

Only five countries - United States, Russia, France, Japan and China - have the cryogenic engine upper stage technology to launch heavier satellites in geostationary orbit.

India is the sixth country to design and develop the cryogenic technology.

When the US prevented Russia from transferring its cryogenic technology to India in 1992, the state-run ISRO embarked on a mission in 1994 to design and develop the cryo engine for achieving self-reliance in such complex technology at a cost of Rs 335-crore (Rs.3.35 billion) in 16 years. "The technology denial regime has spurred us to develop our own cryogenic upper stage to launching heavier satellites in the higher orbits, about 36,000 km from the earth," Radhakrishnan earlier told reporters here recently.

India, however, had imported seven cryo engines from Russia but used five to launch heavy satellites (above two-tonne class) in GSLV-Mark I and Mark-II rockets during the last decade.

The Rs 150-crore GSAT-4 has one Ka-band regenerative transponder and a navigation payload that will operate in C-band and L1 and L5 bands for global positioning system (GPS) aided geo augmented navigation (Gagan).

Being an experimental mission and wholly funded by the Indian government, there is no insurance cover for the launch as well as the satellite.

"As a technology demonstrator, GSAT-4 will enable testing of many future communication satellite technologies. After reaching GTO, the satellite will use its own propulsion system to reach its geostationary orbital home and will be stationed at 82 degrees east longitude there," Radhakrishnan noted.

Besides the cryogenic engine, the GSAT-4 has advanced telemetry system and advanced mission computers and larger composite payload faring.

The advanced version of the GSLV is a three-stage rocket with solid, liquid and cryogenic stages. The solid core motor of the first stage is one of the largest rocket motors in the world and uses 138 tonnes of propellant (fuel-oxidiser).

很显然，低温验证的很好。   他们故意熄火发动机的{:3_98:}

呵呵，阿3的特色

哎，阿三真不容易。
同情一下。

棒子国注意了,当心又砸中船.

这次的低温上面级是三哥自己造的吧，好像是第一次用自己造的……

原来是低温上面级悲剧了{:3_82:}

又不知道跑哪去

三哥敢上自己造的低温上面级，至少说明了他们的勇气还是不错滴。

应该叫部分成功

大家要客觀的看

印度這東西這次是失敗了，但印度人這火箭已經整的很漂亮了，大家看上面正體平移的那張，再想想發動機是印度產，未來3-5年要是搞定了問題，成功了，印度有後勁的。

不要老是笑印度，實力壓倒印度才是唯一出路。

netbug 发表于 2010-4-15 20:17


    简而言之，找不到了

netbug 发表于 2010-4-15 20:17

除了美国，其他国家的测控能力都不足，如果火箭出现问题，没有进入预定轨道，很难再找到的。我们去年发射印尼卫星就出现这事了，还是靠NORAD的TEL数据找到的

shthug 发表于 2010-4-15 21:22


    要正视印度的进步很难，难在找不到他到底哪里进步了

放心，TG的实力稳稳地压着；
问题是火箭方面各主要大国相差都不算很大。

印度这枚火箭卖相不错，是固体为主？

发改委掀起的这一轮江湖腥风血雨，惨烈程度、波及广度和持续时间远超预期

FGW已经由防空军向防天军转型了。

发现原来印度的“三垂”设施和TG非常象。

航天技术真的普及了。

头三级成功，最后有点问题，其实也还可以理解，起码前面的还不错。前面的是印度造的不？

TG似乎航天发射没有用过三级以上的火箭吧（卫星带的不算）？
四级是否太复杂？

火箭很漂亮, 3G进步神速

netbug 发表于 2010-4-15 20:17
打个比方，就是出门溜狗，回家时手里头只剩一根绳子。

网址在哪里啊？

好啊

这个并不好笑，我们也失败过好多次——CZ2E和CZ3B都有教训的