Bharat Rakshak

KrishG

Hiten wrote:GoI produced this video about Team Indus' Moon mission

Wonderful! Hopefully GOI steps in and subsidizes the launch costs for Team Indus. I am waiting for them to announce the launch contract.

KrishG

KrishG

Methane LOX engines while tantalizing have not really met with great success so far.Russsia experimented a lot with it but was unable to maintain astable ingition and the fuel density is also less compared to RP1 which offsets the 10 second or so Isp advantage though it does not have issues like ca...

KrishG

the ariane5 also seems to have gone the 2-stage way. does it have this "semi cryogenic engine" thing? https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Cut_drawing_of_an_Ariane_5_ECA_EN.svg/800px-Cut_drawing_of_an_Ariane_5_ECA_EN.svg.png Nope. First definitions - Semi cryo - Burns...

KrishG

So is the falcon9 config most efficient and tfta or the ariane4 the proven industry workhorse? Efficiency of a config can be very vague and can be achieved in many ways. What the Falcon 9 has is a very efficient cluster of engines (Merlin). AFAIK it has the highest T/W ratio among modern engines. A...

KrishG

Something helpful..

How to get a satellite to geostationary orbit

KrishG

vasu raya wrote:The recently launched British DMC3 sats, their supposed sideward looking capability can be done by these electric thrusters alone?

Interplanetary travel is over many months, we waited for MOM to reach, so why doesn't ISRO try electric propulsion and prioritize on transponder nos?

KrishG

KrishG

Hi guys, Have been away getting ready for my post grad studies. I am back to being a student so dont have my work email anymore. Please change my BR mail to my gmail (I will provide uni email at later date) gopalakrishna.char1991<at>gmail<dot>com Thnaks, KrishG I tried changing the email in the Con...

KrishG

sohamn wrote:
Picklu wrote:The cryo stage looks like without hard casing.

It surely has a hard casing, what you see if a thermal blanket to keep the LO2 and LH2 below boiling point. This will be removed before launch.

Yup..will be removed shortly before launch.....

KrishG

Hi guys,

Have been away getting ready for my post grad studies. I am back to being a student so dont have my work email anymore.

Please change my BR mail to my gmail (I will provide uni email at later date)

gopalakrishna.char1991<at>gmail<dot>com

Thnaks,
KrishG

KrishG

Shraddhanjali to Ray sir!!

KrishG

Congrats to ISRO! Wiki also refers to an SCE-200 semi-cryogenic engine with 2MN thrust_vac . It's supposedly to be tested in 2016-17. I assuming this means ground testing, because I don't recall prior references to it ? Full scale testing wont be possible by 2017 due to the following reasons. 1) Co...

KrishG

Nice! Some more engine testing followed by full stage testing and we'll be good for LVM3's first launch in December next year (earliest possible date acc to ISRO).

And yes..we need to now concentrate on having our semi cryo engine ready by 2020.

KrishG

Good job! It really takes some guts to make this sort of decision!!! So kudos! Now, this is just the start. We need to give Tejas the kind of importance it has always needed so as to speed up the program and to induct the bird in huge numbers starting now. The Rafale deal if sanctioned in its full n...

KrishG

I am reading " an aggregate success rate of nearly 97%positions MHIs H-IIA and H-IIB rockets as the world's most reliable launch vehicles". This is from ad section of Economist on Mitshubishi Heavy Industries (MHI). Is it true? What is success rate for PSLVs? And also the worlds most expe...

KrishG

CE 20 tested for 20 seconds . So now subsequent tests will ahve to progress to full burn of 595 seconds. People who know engine testing - can you elaborate how the testing plan for longer duration are carried out ? Progressively longer burns or full burns after initial short duration tests ? Obviou...

KrishG

archan wrote:The board software won't accept gmail or other such dains. Please email us with a ISP, work or school provided email.

Ok then..

[hoodibaba@hoodibaba.com]

PS: Please remove the email from this post once the email change is done. Thanks

KrishG

Hi,

Need to change my email address. The old dataone mail is not even reachable. Please change it to crgkc.r<at>gmail<dot>com

Thanks

KrishG

Looks like the bankrolling of Sunni Nuke will be now put to good use by Saudi Saudi Arabia prepares for Iran nuclear deal In the reviewing stands was Pakistani Chief of Army Staff Gen. Rahul Sharif , the man who controls Pakistan's nuclear arsenal. It is the fastest growing nuclear arsenal in the w...

KrishG

Good time to get some content out on the Indian Space Program. Very little content is out there in the open and ArunS's analysis being some of the few.

KrishG

Century of India in Africa begins again As the Chinese economy slows, reducing its appetite for African commodities, Africa re-awakes to the advantages of partnership with India. India’s inclusive development model appears much closer to the African ubuntu ethos. India funds projects with substanti...

KrishG

So currently I have 5 MFs, what is a better strategy, to add to these or buy new ones like there is one manufacturing focused one out now. How many MFs should one ideally be looking for across sectors? I am thinking in terms of about 5L per year investment in MFs. I'm a beginner when it comes to in...

KrishG

Interesting!! - Direct to Geostationary Orbit Russia test-launches new space eco-rocket Angara right into geostationary orbit http://www.rt.com/news/216663-angara-heavy-booster-launch/ Angara A5 is a VERY powerful rocket. It's capabilities are currently limited by it's launch site (Plesetsk). This ...

KrishG

The tiles look really good and do not look scorched like we see the Soyuz/Apollo and Shenzou reentry capsules. I cannot see the buoys/flotation devices.Wonder how it is floating. Remember that LVM3 accelerated the capsule to 5 something km/s and descended from ~125 kms. An actually capsule orbiting...

KrishG

Vehicle Assembly!

KrishG

For that you need highly efficient (both capital and operational cost wise) proven launchers . We have the cryo stages needed for that in place and the missing link in that is a good LOX/Hydrocarbon stage . Have that last link in place and we are globally competitive and can give the global launch ...

KrishG

IB4TL

KrishG

When designing GSLV, ISRO wanted to make it as an extension of the PSLV. That's why, they took almost the same solid core of the PSLV and put in on the GSLV. Instead of the solid boosters of the PSLV, liquid boosters were added. Even the second stage of the PSLV and GSLV were decided to remain same....

KrishG

This is the proposed upgradation of the GSLV Mk-IV is an old concept. There is no official ISRO source for this version. I doubt it will ever fly. And I would be happy if it doesn't. IMO The current ISRO approach of upgrading the core stage with semi cryogenic CLC (ULV) is the better way. The S200 ...

KrishG

I am ok with other configurations but this one really surprises me. It has a CUS stage which is highly costly, will it be able to compete with PSLV on costs? Also the performance would not be close to PSLV but closer to GSLV as CUS one is really powerful. I don't see a replacement for PSLV in that ...

KrishG

Was doing some artwork over the week. Here are future replacements of PSLV, GSLV and LVM3. The ULV with semi cryogenic CLC (common liquid core) and C25 upper stage will be used with a variety of solid boosters for different configurations. The first variant will have 6 S12 boosters (used of PSLV XL)...

KrishG

PRajaram wrote:Folks,

What is the black conical thing on which the crew module is mounted? Is it just a payload mount?

It's the payload adapter. It keeps the payload attached to the launch vehicle till it's time to be released. This is the one used for satellites and other conventional payloads.

KrishG

xave wrote:Any idea what the timing of this launch is?

I hope it is a night launch, i was able to view the IRNSS 1C launch with the naked eye, including a massive sheet of flame during 1st stage separation.

Morning..

KrishG

Thanks KrishG. Another question. I haven't seen a window in the re-entry module so far. If it doesn't have one, how would the crew align the module for retro rocket firing? Again, this a technology validation mission. The actual OV will resemble the current CARE only in terms of the overall design....

KrishG

Q. why test only re-entry module and not service module also (or there's no SM planned)? The service module for the OV was finalized to be based on modified 4th stage of PSLV a couple of years back. Also, notice that the capsule is being launched backwards whereby the imaginary astronauts will be f...

KrishG

http://www.spxdaily.com/images-lg/gslv-3-300-lg.jpg :eek: The fotu makes GSLV look fatter than it usually is!!! It's the photo from Wikipedia which has been altered. I took this photo during Aero India 2009. They had a nice model of LVM3. Why people no credit the fotu!! :(( :mrgreen:

KrishG

This should have been done a lot earlier. Hope it's not too late. Select an Indian company, make them adhere to security clauses, get them SaaB as consultant for Mk2, get staff from HAL and ADA and make them involved in the design of Mk2 with ADA and the foreign consultant. And make sure this facili...

KrishG

Five Reasons India Shouldn't Worry About Its Trade Deficit With China 3. That said, economists agree that bilateral trade figures are pretty much irrelevant. The presence of global supply chains and regional hubs of production means that always-balanced bilateral trade is neither possible nor desir...

KrishG

Capability wise, is there any difference between Bylalu DS receiver and NASA's Madrid and Canberra DSN receivers? Does anyone know? More than capability, NASA has ensured that they have capability to be contact with spacecraft round the clock wrt Earth. I think eventually ISRO has to have such a ca...

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