ISRO Tests India's Largest Cryogenic Engine For 400-Ton Rocket

[egodoc222]

When is semi cryogenic engine scheduled for first test? Any info!!

When is semi cryogenic engine scheduled for first test? Any info!!

 

[gslv mk3]

When is semi cryogenic engine scheduled for first test? Any info!!

first engine is yet to be fully manufactured. Probably next year.

When is semi cryogenic engine scheduled for first test? Any info!!

first engine is yet to be fully manufactured. Probably next year.

 

[egodoc222]

first engine is yet to be fully manufactured. Probably next year.



first engine is yet to be fully manufactured. Probably next year.

I think it's gonna replace the Vikas engine and in the present configuration with SCE....payload to gto increases to 6 tons right?

 

[gslv mk3]

I think it's gonna replace the Vikas engine and in the present configuration with SCE....payload to gto increases to 6 tons right?

Yes, that's correct.

 

[egodoc222]

Yes, that's correct.

Do you think isro done a mistake in going the cryogenic route? Rest of the space powers like china invested in semicryo...which is less complicated than cryo tech...shed some light on this!!

 

[gslv mk3]

Do you think isro done a mistake in going the cryogenic route? Rest of the space powers like china invested in semicryo...which is less complicated than cryo tech...shed some light on this!!

They had originally proposed a 60 tonne thrust semi cryogenic engine as back as the 80s. However it was abandoned in favour of hypergolic engine development (Vikas- Viking) with France.

However cryogenic engines are still relevant for use in upper stages, given their Isp.

 

[Śakra]

What is ULV and when is that launching?

 

[ashok321]

Do you think isro done a mistake in going the cryogenic route? Rest of the space powers like china invested in semicryo...which is less complicated than cryo tech...shed some light on this!!

Ariane workhorse Ariane-5 is cryogenic, so is Ariane family's new entrant (2020) = Ariane-6, a cryogenic.
Space-x = Falcon = Cryogenic.

The more the cooler fuel, the more the fuel density = lesser occupancy of rocket space.

 

[Providence]

Where did you get that number?

Some article.

According to a research paper, the viability of Mars passenger missions would be possible only when the cost/kg drops to ~ USD1650. I guess spaceX's current estimate for its falcon heavy launch vehicle is USD3950/KG

EDIT : Don't have much idea about semi cryo shit. Someone teach me

And whats the cost of Falcon9 ?

Considering that Flacon heavy would be reusable, it would be ~USD 4K/KG

 

[Dungeness]

Do you think isro done a mistake in going the cryogenic route? Rest of the space powers like china invested in semicryo...which is less complicated than cryo tech...shed some light on this!!

China's newest launch vehicle CZ-5 uses both engines. The boosters use semi-cryogenic engines, and the core and upper stage use cryogenic engines.

https://en.wikipedia.org/wiki/Long_March_5

 

[gslv mk3]

Considering that Flacon heavy would be reusable, it would be ~USD 4K/KG

Source bro

 

[Nilgiri]

Haha, "just in time" philosophy doesn't really fit India work cultural very well, remember the famous phase of "India Time"? Though arguably the best among its domestic peers, ISRO doesn't have a very good track record on "on-time" delivery either, with a couple of exceptions, MoM is for one.

GSLV-MK3 has been laden with countless delays, just like many high profile projects in India, and I do hope ISRO can keep this updated schedule this time.

Well ISRO is not a typical Indian cultural (esp considering its a govt agency) phenomenon (which really ultimately stems from the socialist cold war bureaucracy of India). It is a beacon (among others) of what can be achieved and then improved upon further (Esp for Indian govt activity). Of course ISRO is not 100% perfect like you said, but ISRO certainly owns up to its mistakes and corrects them long term more than I seen from any other Indian govt agency (though some challengers are starting to take shape now).

Many space people I know in Canada and the west are actually quite envious that for such commercial projects, ISRO can brazenly override the "space-heritage" philosophy that the west is saddled with in many cases (I know of it personally in a couple projects I worked on earlier). But it makes perfect sense given the size of insurance industry in the west compared to India (for even non-human related risk). So this is really the time for ISRO to charge ahead in the frontier as much as it can (before Indian insurance sector "catches up")....rest of Indian industry can then chart the envelope it creates behind it more thoroughly and appropriately over time.

 

[ashok321]

India is also into semi cryogenic:

https://www.wikiwand.com/en/SCE-200

 

[Bad Guy]

What is ULV and when is that launching?

ULV is a modular rocket family to replace PSLV, GSLV & LVM3 by single launch.

It's first flight was scheduled around for 2020 from TLP but now this project has been put on hold. India will make HLVs before developing new series of MLVs.

 

[Providence]

Source bro

The launch cost of super heavy falcon will be around USD 90m. It would have 22,200 kg of gto payload capacity. Basic math says usd 4054/KG of launch cost.

This needs to brought down to usd 1600/kg for us to be a viable space faring civilization ! ( Not sure of the source for this but I heard Elon Musk talking about the numbers in a published interview )

http://spacenews.com/spacexs-new-price-chart-illustrates-performance-cost-of-reusability/