Rank of Countries by Space Technology (REQUEST!)

[Martian2]

success rate of Indian 2011 space launch is 100%, Chinese are 95%.

You forgot the two Indian GSLVs that blew up a year earlier.

Also, Indians launch tiny satellites that weigh a few pounds to a few hundred pounds. Chinese satellites are 5,000kg (or 10,000 pounds) each. Indian satellites are high-school projects and not worth comparing.

India is decades away from matching Chinese DFH-4 technology (see below).

----------

China's DFH-4 matches Western standards for modern communication satellites

The characteristics of a modern communications satellite are:

1. It is the size of a city bus and weighs about 10,000 pounds.

2. It lasts for 15 years.

3. It has approximately 32 transponders.

China's DFH-4 satellite bus (or platform) designed and built by CGWIC (i.e. China Great Wall Industrial Corporation)

DFH-4 satellite technical specifications

"A typical satellite has 32 transponders. Transponders each work on a specific radio frequency wavelength, or “band.” Satellite communications work on three primary bands: C, Ku and Ka. C was the first band used and, as a longer wavelength, requires a larger antenna. Ku is the band used by most current VSAT systems. Ka is a new band allocation that isn’t yet in wide use. Of the three, it has the smallest wavelength and can use the smallest antenna." (Source: Beyond line of sight communications)

Western satellite specifications look identical to China's DFH-4 satellite. (Source: User:Bhamer/sandbox - Wikipedia, the free encyclopedia)


China's DFH-4 is comparable to Western satellites. Its 30 transponders (or perhaps the Pakistanis weren't willing to buy more than 30 transponders) are very close to the average of 32 transponders on a modern satellite. At 5,200 kg or 11,440 pounds, it is approximately the same weight as Western satellites in the 10,000-pound class. The DFH-4 uses the "three primary bands: C, Ku, Ka," and L bands. Its solar panels generate the standard 8 kW of power.

----------

China Looks To Boost Satellite Manufacturing With DFH-4 Line

"China Looks To Boost Satellite Manufacturing With DFH-4 Line
By PETER B. de SELDING
Space News Staff Writer
posted: 18 October 2006
03:30 pm ET
...
PARIS -- The first of a new line of high-power telecommunications satellites produced in China and already sold to two export customers is scheduled for launch in late October for China's Sinosat direct-broadcast television provider, Chinese space officials said.

The Sinosat-2 satellite, the first of the DFH-4 spacecraft built by the China Academy of Space Technology (CAST), has faced several delays but is now expected to be launched in the coming weeks by a Chinese Long March 3B rocket from China's Xichang Satellite Launch Center in southwest China's Sichuan Province.

If it functions as planned, the DFH-4 satellite design will bring China's domestic satellite manufacturing industry closer to the level of its U.S., European and Japanese counterparts.

DFH-4 is the third generation of China-built telecommunications spacecraft and carries some 800 kilograms of payload -- four times the capacity of the previous Chinese product, the DFH-3. Weighing up to 5,300 kilograms at launch, the DFH-4 platform is built to operate for 15 years -- double the DFH-3's life expectancy -- and provide up to 10 kilowatts of power at the end of its service life.
...
Wang said CAST has tested the DFH-4 design to a maximum capacity of 54 transponders, 38 in Ku-band and 16 in C-band. The satellite's upper limit would be around 5,600 kilograms, he said in the presentation. (article continues)"

 

[shuttler]

just coz theres no link attached to one liners...u cant term them trolls....as far as his posts are concerned...if u see theres actually no need for such long stuffs that he posts...his arguments can be well countered without links...

Some one liners are not but the ones that I mentioned above are definitely trolls. I bet they have already automatically typed the troll replies when they see Martian2's handle.

 

[ChineseTiger1986]

success rate of Indian 2011 space launch is 100%, Chinese are 95%.

Sure, 3/3 is much better than even with 95/100.

 

[buddyboyyash]

Are you sure about that?

Pentagon has made a report about China's military strength, they usually give a manner that China is much stronger than its neighbors and much weaker than US, so all of China's neighbors need to stick with US.

Whether they give accurate report or not, they have no right to point finger at us on our domestic affairs.

We have not invaded a single country, while US has already invaded 3 nations with sovereignty in the last decade, so they have no right to paint us as the aggressor.

thats defence report mate...every country makes such remarks...dont u hear ur south china sea or taiwan stuff...or india vs pakistan stuff??...dats the reason i said "at least" officially...n i wont say they are pointing finger at ur domestic stuff...your country your money..do wateva u want...they are just highlighting..

 

[KRAIT]

Shall we get back to topic in DISCUSSION....

 

[buddyboyyash]

You forgot the two Indian GSLVs that blew up a year earlier.

Also, Indians launch tiny satellites that weigh a few pounds to a few hundred pounds. Chinese satellites are 5,000kg (or 10,000 pounds) each. Indian satellites are high-school projects and not worth comparing.

India is decades away from matching Chinese DFH-4 technology (see below).

----------

China's DFH-4 matches Western standards for modern communication satellites

The characteristics of a modern communications satellite are:

1. It is the size of a city bus and weighs about 10,000 pounds.

2. It lasts for 15 years.

3. It has approximately 32 transponders.

China's DFH-4 satellite bus (or platform) designed and built by CGWIC (i.e. China Great Wall Industrial Corporation)

DFH-4 satellite technical specifications

"A typical satellite has 32 transponders. Transponders each work on a specific radio frequency wavelength, or “band.” Satellite communications work on three primary bands: C, Ku and Ka. C was the first band used and, as a longer wavelength, requires a larger antenna. Ku is the band used by most current VSAT systems. Ka is a new band allocation that isn’t yet in wide use. Of the three, it has the smallest wavelength and can use the smallest antenna." (Source: Beyond line of sight communications)

Western satellite specifications look identical to China's DFH-4 satellite. (Source: User:Bhamer/sandbox - Wikipedia, the free encyclopedia)


China's DFH-4 is comparable to Western satellites. Its 30 transponders (or perhaps the Pakistanis weren't willing to buy more than 30 transponders) are very close to the average of 32 transponders on a modern satellite. At 5,200 kg or 11,440 pounds, it is approximately the same weight as Western satellites in the 10,000-pound class. The DFH-4 uses the "three primary bands: C, Ku, Ka," and L bands. Its solar panels generate the standard 8 kW of power.

----------

China Looks To Boost Satellite Manufacturing With DFH-4 Line

"China Looks To Boost Satellite Manufacturing With DFH-4 Line
By PETER B. de SELDING
Space News Staff Writer
posted: 18 October 2006
03:30 pm ET
...
PARIS -- The first of a new line of high-power telecommunications satellites produced in China and already sold to two export customers is scheduled for launch in late October for China's Sinosat direct-broadcast television provider, Chinese space officials said.

The Sinosat-2 satellite, the first of the DFH-4 spacecraft built by the China Academy of Space Technology (CAST), has faced several delays but is now expected to be launched in the coming weeks by a Chinese Long March 3B rocket from China's Xichang Satellite Launch Center in southwest China's Sichuan Province.

If it functions as planned, the DFH-4 satellite design will bring China's domestic satellite manufacturing industry closer to the level of its U.S., European and Japanese counterparts.

DFH-4 is the third generation of China-built telecommunications spacecraft and carries some 800 kilograms of payload -- four times the capacity of the previous Chinese product, the DFH-3. Weighing up to 5,300 kilograms at launch, the DFH-4 platform is built to operate for 15 years -- double the DFH-3's life expectancy -- and provide up to 10 kilowatts of power at the end of its service life.
...
Wang said CAST has tested the DFH-4 design to a maximum capacity of 54 transponders, 38 in Ku-band and 16 in C-band. The satellite's upper limit would be around 5,600 kilograms, he said in the presentation. (article continues)"

i hate to quote such long posts...but...forget it...

now...when u talk with half knowledge...i cant do anything...india does launch highschool projects...but can u name one launch in which some nano satellite is the primary payload??...

has china mastered multiple satellite launch capability??...does china have a satellite based navigation system??...
also....india tested the worlds third most powerful rocket booster successfully...way ahead of china...now this was just for trolling

i agree 2011 wasnt 100% successful as quoted....but u r really irritating...

guys....rank the countries based on following since the space era began....

most satellites launched
most rocket launches
success rate
versatality of rockets used
manned missions
highest number of launches
lunar landing (manned and unmanned)
inter planetary missions (except lunar missions)
multiple satellite launch capability
operating a space station
budgets of space programmes
countries with number of private companies involved directly in satellite making or launching...

any1 wants to add anything??

 

[ChinaToday]

his method of educating fools on the thread: on a very minor part by repetition and geez, Martian2 has made brand new insertion of materials in his arguments!

most of you guys, I bet, are making one liner ridicule without actually reading the content of his posting

He is more knowledgable than the rest of indian trolls put together with regard to space technology

 

[buddyboyyash]

no reply??...i presume everyone is ready to fight on "I AM THE BEST" but no1 is ready to sort things up...good going...world will be peaceful

He is more knowledgable than the rest of indian trolls put together with regard to space technology

yep...absolutely...google and wikipedia make every1 more knowledgable than all others put together....

 

[ChinaToday]

The Dragon in Flight: Why Space Could Belong to China in the 21st Century

It is no surprise that China is seldom out of the headlines these days. Over the past thirty years, it has matched unprecedented economic growth with a major military buildup and ever-closer ties to the developing world, becoming the world’s second-largest economy and largest exporter. It is widely feted as a potential superpower and the first real rival to American power since the collapse of the Soviet Union in 1991; the accountancy firm PricewaterhouseCoopers expects China to surpass the United States economically by 2030.[1] The Chinese communist government has also grown increasingly territorial, intimidating neighbouring states such as Japan and Vietnam with its trade-war economics and suggestive military exercises.

One often-overlooked aspect of China’s rise is its great focus on science and technology. Though still years behind America and Western Europe, it has been closing the distance rapidly through a mixture of investment and education. 10,000 Chinese received engineering PhDs in 2009, compared to around 8,000 Americans; the Chinese government claims that half a million more receive bachelor’s degrees in science and mathematics every year.[2] This large pool of educated workers has been complemented by enormous state investment in research and development, particularly in renewable energy. In 2010 alone, China spent nearly US$49 billion on green technology research, more than any other country.[3] Chinese firms such as Huawei and Lenovo have become world leaders in computing and mobile communications, markets which were previously the dominion of American and Japanese companies. China has furthermore worried Western nations with its rapid acquisition of new military technologies; its first stealth fighter, the Chengdu J-20, made its maiden flight in January 2011.


However, China’s technological ambitions extend beyond Earth’s atmosphere. Though a relative newcomer to spaceflight (its first astronaut flew in 2003) China’s National Space Administration (CNSA) now operates one of the world’s most active space programs, having conducted 18 successful orbital launches in 2011 alone. China has a far stronger recent launch record than neighbouring Russia: just one Chinese orbital launch failed in 2011, compared to four Russian launches. China is also self-reliant for its manned missions, unlike the Americans, who have been dependent on Russian Soyuz spacecraft to reach the International Space Station (ISS) since the retirement of the Space Shuttle in July 2011.

Additionally, China’s ambitions in orbit are far more concrete than those of its spacefaring rivals. There are no definite plans for the re-use of the ISS and its modules after its retirement in the 2020s; if such an agreement cannot be made, America, Russia, Japan and the European Union will then be left without a working space station. China, however, intends to have at least one large laboratory outpost in orbit by 2022, and even launched its first space station module, Tiangong-1, in September 2011. Shortly after, China successfully conducted an autonomous orbital docking – a vital support capability for any long-term orbital station – and will dispatch at least one human crew to Tiangong-1 in 2012.[4] Tiangong-1 itself is expected to be the basis for a future class of robotic resupply spacecraft, similar to the Russian Progress spacecraft. In December 2011, China launched the tenth satellite of its Beidou positioning constellation, opening up a lucrative domestic market for location-based services and granting it increasing independence from the ageing American GPS network.[5]

Nor does China intend to ignore more distant real estate. Its Chang’e 1 and 2 lunar satellites, launched in 2007 and 2010 respectively, have generated one of the most detailed 3D maps of the Moon, and will be followed in 2013 by the Chang’e 3 lunar rover. Sample-return missions are planned for later in the decade, and China plans to land astronauts on the Moon by 2025 – a significant ambition, seeing as the United States, its most powerful rival, abandoned its plans for manned lunar exploration in 2010. China has also set its sights on Mars: its first Martian satellite, Yinghuo-1, was launched in November 2011, although it was lost when its mated Russian spacecraft, Phobos-Grunt, malfunctioned after launch. It is doubtful that China will be discouraged by this mishap.

Of course, China’s rapid investment in the space sector has led to concerns being voiced in the West over the potential military applications of such technologies. The Beidou network is widely feared to be a dual-use system, providing both commercial location services and guidance for China’s cruise missiles, which are aimed in great numbers at Taiwan. China is also one of only three nations to successfully develop anti-satellite (satellite-destroying) missiles; in 2007, it destroyed a weather satellite with a kinetic missile, sparking denunciations from the United States and other nations. If China continues to develop its orbital presence, it may gain a major strategic advantage over regional rivals such as Taiwan and Japan – and possibly even the Western powers.

Is the Chinese domination of space a plausible scenario for the 21st century? Perhaps not. Technologically, it is still playing catch-up with the United States, and will continue to do so for at least a decade. It is worth remembering, after all, that NASA developed space stations and conducted a moon landing over 40 years ago, while China is only now reaching a comparable level of advancement. The Beidou network is still under development, and will not be globally operational until 2020. Even if the ISS is retired without a successor at the end of this decade, it will still have provided over two decades of orbital research and invaluable manned spaceflight experience – something Chinese astronauts will struggle to match until the Tiangong program reaches fruition in the 2020s. And while China’s lunar ambitions are impressive, it has yet made few ventures into the wider solar system, while American, Russian and European probes and space telescopes have dominated space science for nearly half a century.

Nonetheless, China is advancing more rapidly in the field of spaceflight than any other nation, and benefits from a reliable and independent manned launch capability. The United States, by contrast, will lack the ability to launch its own astronauts without Russian or commercial help until its planned Space Launch System enters service around 2016. No other nation has a lunar exploration program as well-planned as China’s, and it is also the only country with a demonstrably functional independent space station project. It is also worth noting the economic and technical constraints suffered by China’s rivals: NASA faces major budget cuts and Russia’s Roscosmos has been plagued by launch failures, while the CNSA enjoys steady state funding. As China’s economic rise continues, the demand from domestic and foreign firms for its satellites will further spur development. Moreover, the Chinese government may – as its American counterpart has recently done – encourage the development of private manned spaceflight companies. This will drive down launch costs and open up lucrative new markets such as space tourism and microgravity manufacturing (production of goods for space-related purposes). Whether the 21st Century will be a “Chinese century” remains uncertain, but it is highly probable that China will play a leading, if not dominant, role in orbit and beyond.

The Dragon in Flight: Why Space Could Belong to China in the 21st Century

 

[500]

By launching weight:
1) USA: Delta IV Heavy - 22,950 kg (Saturn V - 118,000 kg retired)
2) Russia: Proton-M - 21,600 (Energia - 100,000 kg retired)
3) EU: Ariane 5 - 21,000 kg
4) Japan: H-IIB - 19,000 kg
5) Ukraine: Zenit 2M - 13,920 kg
6) China: Long March 3B - 12,000 kg
7) India - GSLV - 5,000 kg
8) Israel - Shavit - 350 kg
9) Iran - Safir - 50 kg

By manned missions:
1) Russia
2) China
3) US - retired

By space exploration:
1) USA
.... big gap ....
2) EU
3) Russia - Japan
4) China

 

[buddyboyyash]

i appreciate the article...but m really sorry to say this isnt something new that i am reading...world is a big gossip place...

n theres obviously no doubt about chinas advancing capabilities...so...

By launching weight:
USA: Delta IV Heavy - 22,950 kg (Saturn V - 118,000 kg retired)
Russia: Proton-M - 21,600 (Energia - 100,000 kg retired)
EU: Ariane 5 - 21,000 kg
Japan: H-IIB - 19,000 kg
Ukraine: Zenit 2M - 13,920 kg
China: Long March 3B - 12,000 kg
India - GSLV - 5,000 kg
Israel - Shavit - 350 kg
Iran - Safir - 50 kg

By manned missions:
Russia
China
US - retired

By space exploration:
USA
.... big gap ....
EU
Russia - Japan - China

well last i heard was that it is just suspended for 5 years...not really retired....

n there were speculations of virgin galactic making its first tourist space flight by 2013...so i wont really consider usa manned capability retired

 

[newdelhinsa]

USA
Russia
Europe
China
India.

In near future

USA
Russia
China
Europe
India

 

[SHAMK9]

i dont know but i would be nice to see Pakistan launching its own satellites

 

[kawaraj]

Germany had a preliminary development of numerous rocket space launchers and re-usable launch systems (Sänger II, etc.) after WWII. These were never realized as national or European projects. Also, in the late 1970s and early 1980s, the private German company OTRAG tried to develop low-cost commercial space launchers. Only sub-orbital tests of the first prototypes of these rockets were carried out.

Germany should have its position in the field, yes I know EU has launchers.

 

[anon45]

Current Space Technology Leaders in the proper rank

1. Chinese space technology is the most reliable. Fifteen out of fifteen successful rocket launches in 2010. (Manned and unmanned space capability)

2. Russian space technology is pretty good. However, a few rockets blow up now and then. (Manned and unmanned space capability)

3. America doesn't have manned space vehicles anymore. However, unmanned American rockets have a good record. (Unmanned space capability only with the retirement of Space Shuttles)

1. Lets see China continue to do that for the next 5 years, let alone 20, let alone 40, then we'll talk about reliability. As it is this isn't a contest, both the US and the USSR/Russia have decades more experience paving the path for the other powers in both design and protocol where none before existed, and thus are considered more reliable, while China is still the relative newcomer standing upon the shoulders of giants. China might prove to be more reliable eventually, but it isn't proven yet and their record is still too new to decide when compared to the US and Russia. This is much the same argument used by Boeing vs SpaceX when it comes to reliability, but you know what? It's true.

2. Russia's manned capability is considered the most reliable in the world. It's not difficult to see why with its decades long record and few failures. Of course it isn't hard for it to be considered most reliable since it is essentially a multiple decades old unchanged design, but the maxim 'if it aint broke dont fix it' applies.

Russian unmanned capability is good imo, better than most, but when it comes to exploration Russia seems to have all the bad luck, especially with Mars.

3. US manned capability to LEO before the end of the Shuttle was pretty much second to none in capability, but the costs of the program and bad management have left the US without a manned capability for the moment. Under your guidelines this means the US isn't a premier space power, but that utterly ignores how its achievements in unmanned spaceflight outclasses all the rest.

It can be argued convincingly imo that getting multiple rovers successfully to Mars in working condition, a working probe beyond the edge of the solar system, and a space plane with a staying capability exceeding a year that is able to change orbit and land successfully back on earth are more effective demonstrations of 'space capability' and 'technology' then taking a man to LEO orbit, especially when the country you demote has done it before, sent a man further than anyone else, and has concrete plans to have the capability to send men to LEO again (if not farther, which is likely), by the end of the decade. This may or may not actually happen, but historically there is a great chance it will, the US has been without manned capability before.

If you are adamant that for any country to be a premier space power, they are required to have manned capabilities TODAY at this exact moment without regard to flight history, achievement history, ungoing unmanned operations, or future plans, then yes, the US is not a 'premier space power' under your definition today.

I am of the opinion that many would disagree with such a pedantic view though,

and I am of the opinion that it is so narrowly defined as to hold no meaning.

It should rather be measured in the space of years, if not half-decades rather than the moment.