China successfully refuels a satellite in orbit | Engadget

[Indx TechStyle]

ISRO should bring change in their satellite design. Satellites with manoeuvring capabilities must have a detachable fuel tank.

1) A refueller with few numbers of fuel tank will be be launched. The refueller will be placed in the orbit of the satellite to be refuelled.

2) The refueller will exchange the fuel tanks, the filled one will be installed to the satellite and the empty one back to refueller.

3) Once all tanks are replaced in a year or two , the refueller will be given command to reenter and burn.

Technology required: docking ( for exchanging the fuel tanks).

But if the international community goes with the chinese design then India too because India can earn money through refuelling.

I guess we must try to well implement ion propulsion first.

ok, the next...lol...

Again LOL.

 

[Neo]

No offense, but such responses from Pakistanis over Chinese achievements are quite common on one hand, they are rarely seen in case of Indians on other hand.
I bet any of you guys even not has opened ISRO thread.

Check several isro and moon/mars missions threads and how many posts I have thanked. I give credit where it's due.

 

[Indx TechStyle]

Check several isro and moon/mars missions threads and how many posts I have thanked. I give credit where it's due.

Case of Newspapers comment section is different.
But elsewhere.

 

[AnantS]

Congrats China! I think apart from refueling or collecting and orbiting options, unoosa must pass a resolution that all satellite manufacturing companies , must carry reserve fuel, which allows them to de-orbit after their operational life is over. At least for future, the rate of groth of junk in space could be lessened. The above should also be applied to stages which are jettisoned in the space

 

[The Last Stand]

Is the fuel Nuclear? just curious (I read somewhere many satellites use radiation to power electronic systems)

 

[Indx TechStyle]

Is the fuel Nuclear? just curious (I read somewhere many satellites use radiation to power electronic systems)

I don't guess fuel was nuclear, at least this time.
I already know US and Russia have nuclear powered is spacecrafts.

India has proposed a similar mission in Lunar Exploration Program to power the aircraft.
http://m.timesofindia.com/city/mumb...ost-to-Chandrayaan-2/articleshow/48928966.cms
First it was planned for Cdy-2(then, cancelled because of schedule) and now will be executed in further missions later.
http://www.newindianexpress.com/nat...d-Space-Mission/2016/01/05/article3213005.ece
What are China's plans regarding nuclear powered missions?@Martian @amoy @shiphone @no smoking

 

[shiphone]

the 4th highlight of the LM-7 first mission is about the heaviest payload ...lol...

the following also quote the article above .the red parts are the new tech/trial applied on this
scale-down experiment capsule...

1. new shape
2. new chute
3. groundbreaking Blackout zone communication tech
4. new heat shielding design and material ..

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Sub-scale capsule

The largest payload of the CZ-7-Y1 mission was a sub-scale ballistic capsule, intended to demonstrate atmospheric re-entry for China’s next-generation multi-purpose crew vehicle. According to a research paper published in 2014, China is currently developing the concept of a multi-purpose crew vehicle that can bring Chinese astronauts to the Moon and beyond in the 2020s. The spacecraft vehicle will feature a single baseline crew capsule that can accommodate up to six astronauts. The capsule can then be attached to different service modules to fulfil different mission requirements, from lunar landing to a mission to to a Near Earth Asteroid or Mars.

Designed by China Academy of Space Technology (CAST), the sub-scale capsule is in a blunt cone shape similar to the NASA Orion spacecraft. The capsule is 2.3 m in length and 2.6 m in diameter, with a total mass of 2,600 to 2,800 kg. Onboard systems included batteries, propulsions, a guidance & navigation system, heat shield, parachutes, and a communications system capable of transmitting through the plasma occurring during the hypersonic atmospheric re-entry sequence.

The capsule was also fitted with sensors to collect aerodynamic and heating data during the atmospheric re-entry to validate the design of the future crew vehicle. The capsule also features a reusable airframe built from lightweight alloys, covered by expandable heat-resistant protective layers and shielding, indicating that partial reusability will be a key feature of the future crew vehicle.

The sub-scale capsule remained attached to the YZ-1A upper stage throughout its flight. After orbiting the Earth for 13 times in 19 hours, the upper stage performed its third orbital manoeuvre in the morning of 26 June to lower to an attitude of 170 km, where the re-entry capsule was separated and placed into its re-entry trajectory. The capsule then made an unpowered ballistic descent through the atmosphere. During the atmospheric re-entry, a supersonic stabilising chute was deployed to ensure the capsule’s blunt end remains pointing forwards.

After undergoing a radio communication blackout, the re-entry capsule deployed its main parachute to further slow down. At 15:41 CST (07:41 UTC), the capsule touched down at a landing site in the Badain Jaran Desert near the Jiuquan Satellite Launch Centre. Due to a lack of parachute cut-off mechanism, the capsule was dragged by strong winds after touchdown, leaving a nearly 1 km trail on the ground. The search crew eventually managed to recover the capsule, and the mission was declared to be a complete success.

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BTW...the new generation multi-purpose crew vehicle would have two varients for the Crew transportation( 3-6 crews) between the earth and China Space station(2020) and future maned moon mission (2-3 crews)...

 

[HariPrasad-1]

ISRO should bring change in their satellite design. Satellites with manoeuvring capabilities must have a detachable fuel tank.

1) A refueller with few numbers of fuel tank will be be launched. The refueller will be placed in the orbit of the satellite to be refuelled.

2) The refueller will exchange the fuel tanks, the filled one will be installed to the satellite and the empty one back to refueller.

3) Once all tanks are replaced in a year or two , the refueller will be given command to reenter and burn.

Technology required: docking ( for exchanging the fuel tanks).

But if the international community goes with the chinese design then India too because India can earn money through refuelling.

What about giving a probe like plane for refueling?

 

[shiphone]

1.if a spacecraft is Nuclear powered , there is no need for a in-orbit refueling ...isn't it? and obviously , the nuclear fuel is the solid

2. in the early age of space exploration, the efficiency of the solar cell panel was not very ideal...so the scientists and engineers would think about the nuclear battery..nowadays, the Conversion efficiency of the modern solar cell has been well improved , the solar panel could provide enough electricity for most of satellites, so you could see much less nuclear power units on modern spacecrafts...

3. but nuclear power is still the better or the only choice for some space missions like long distance space voyage or the prober for the shadow zone of the space object...

4. a small nuclear device also can provide the heat for the spacecraft coz the out space is extreme cold especially when the prober travelling the shadow area of a planet...

the Lander of Chang'e 3 mission in 2013 has such a nuclear battery ...she is still alive standing there and transmitting the data every 14 days...

Chang’e 3 was the first Chinese spacecraft to have been fitted with a radioisotope heater unit (RHU), a small nuclear battery device using plutonium-238 to provide heat through radioactive decay to power the Lander’s sub-systems during the 14-day lunar night.

 

[Indx TechStyle]

the 4th highlight of the LM-7 first mission is about the heaviest payload ...lol...

Looks that somebody left any made in China tickling machine on you.


By the way, what's your opinion over boosting a moon probe from nuclear power.
ISRO says it gonna be small thrust but even then, as it's generally supported for deep space missions.

 

[Screambowl]

What about giving a probe like plane for refueling?

depends on its weight then, because too large will not fit in low orbit due to high velocity, as earths centripetal force works on the body as per its weight , requires tests.

 

[shiphone]

the 5th highlight was the classified TianGe (Sky pigeon) Space Experiment Device ...so just a quick sketch here...lol.......

the payload actually includes 2 micro satellites with high motility, space object identification ability, precise control of space approaching.etc...during this mission ,the 2 sats also experimented the network communication/ information relay / orbit control between multi spacecrafts ejected by the LM-7 rocket...

the importance of this payload might be not less than the in-orbit refueling device /Active Debris Removal Vehicle

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the 6th payload is a Cube Satellite-Ao Xiang Zi Xin...it's a 33kg class mirco-sat developed by college teacher and students for gravity field measurement / Anti-radiation / Navigation experiments ...service life: one year...

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all 5 spacecrafts + 1 upper stage including the in-orbit refueling device weighed 12 tons in total ...lol...so far the purpose of all main mission has been achieved...the maiden flight mission of LongMarch-7 is really a fruitful one