Author Topic: SCE-200 semi-cryo engine info  (Read 60969 times)

Offline worldtimedate

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Re: SCE-200 semi-cryo engine info
« Reply #80 on: 05/05/2017 03:18 PM »
In a recent interview LPSC director casually mentioned they have began manufacturing the first test engine

According to S. Somnath, LPSC Director, ISRO wants to test a semi-crygenic engine prototype in a year.

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Considering that the global space market’s future will be defined by heavy lift boosters, it is imperative for Isro to develop the GSLV’s advanced avatars as soon as possible. The international launch scene is changing rapidly with newer launchers constantly pushing the bar higher on payload capability.

Isro scientists seem ready for the challenge and have set their sights on leapfrogging to GSLVs powered by semi-cryogenic engines. Fuelled by kerosene and liquid oxygen, these engines would be capable of lofting ten-ton satellites into space, cutting launch costs dramatically. "We expect to test the prototype of a semi-cryogenic engine in a year’s time," says Somnath. "And we may fly it by 2021. Engine development takes a very long time, at least 10 years for realisation."

Source :GSAT-9 launch:?With South Asia Satellite Isro moves into heavyweight category

worldtimedate [ http://www.world-timedate.com/ ]

Offline sanman

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Re: SCE-200 semi-cryo engine info
« Reply #81 on: 06/13/2017 02:49 AM »

Offline vineethgk

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Re: SCE-200 semi-cryo engine info
« Reply #82 on: 06/13/2017 02:53 AM »
http://www.newindianexpress.com/nation/2017/jun/13/isro-to-flight-test-kerosene-based-semi-cryogenic-engine-by-2021-1615979.html

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"Various tests are in progress on the engine. Of the four turbo pumps in it, three have undergone tests at the ISRO Propulsion Complex, Mahendragiri. We plan to have the engine ready by 2019 end, the stage by 2020-end and the first flight by 2021,’’ S Somanath, director, LPSC, said.

LPSC had developed the cryogenic engine for the GSLV Mk-II and the much powerful one for the GSLV Mk-III. The idea is to replace the second stage of the GSLV Mk-III, which now uses a liquid stage, with the semi-cryo. The rocket will retain the cryogenic upper, third stage.

The advantage of inducting the semi-cryogenic stage is the payload capacity of the GSLV Mk-III will increase from four tonnes to six tonnes. Using refined kerosene as fuel has quite a few advantages: It is eco-friendly and cost-effective.

Taking into account the '-end' suffix added to the dates (hinting it is more likely *optimistic* targets than what is *likely*) the revised targeted dates would be:

- SCE-200 engine ready by 2020+
- SC-200 stage by 2021+
- first flight by 2022+

There is also a project to cluster 4-5 of these engines to create a more powerful core for future heavy-lift launchers, but that would probably have to wait for much longer due to its inherent complexities, and the need to fabricate stages with a diameter of 5m or more.
« Last Edit: 06/13/2017 02:56 AM by vineethgk »

Offline srikanthr124

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Re: SCE-200 semi-cryo engine info
« Reply #83 on: 06/14/2017 11:26 AM »
is sce-200 being built by isro based on re-usability in mind or not and recently “somanth lpsc director said sce-200 stage will be ready by 2021”

But why that much time why cont we replace GSLV Mark-III L110 liquid stage with sce-200 stage within 1 year after materializing sce-200 engine is it testing will take like 4 years from now…

but chines did it in after 2 years from initial prototype…
« Last Edit: 06/14/2017 12:38 PM by srikanthr124 »

Offline russianhalo117

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Re: SCE-200 semi-cryo engine info
« Reply #84 on: 06/14/2017 02:34 PM »
is sce-200 being built by isro based on re-usability in mind or not and recently “somanth lpsc director said sce-200 stage will be ready by 2021”

But why that much time why cont we replace GSLV Mark-III L110 liquid stage with sce-200 stage within 1 year after materializing sce-200 engine is it testing will take like 4 years from now…

but chines did it in after 2 years from initial prototype…
Current version in development is designed to be expendable with follow-on version designed to support reuse.

Offline K210

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Re: SCE-200 semi-cryo engine info
« Reply #85 on: 06/15/2017 12:32 PM »
is sce-200 being built by isro based on re-usability in mind or not and recently “somanth lpsc director said sce-200 stage will be ready by 2021”

But why that much time why cont we replace GSLV Mark-III L110 liquid stage with sce-200 stage within 1 year after materializing sce-200 engine is it testing will take like 4 years from now…

but chines did it in after 2 years from initial prototype…
Current version in development is designed to be expendable with follow-on version designed to support reuse.

Actually SCE-200 is being developed with reusability in mind. Each engine can be reused up to 15 times. 

Offline sanman

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Re: SCE-200 semi-cryo engine info
« Reply #86 on: 06/15/2017 02:49 PM »
Current version in development is designed to be expendable with follow-on version designed to support reuse.

Actually SCE-200 is being developed with reusability in mind. Each engine can be reused up to 15 times.

I know the semi-cryo engine intended for use in the planned TSTO (Two-Stage-To-Orbit) vehicle is supposed to be reusable as  you've said, however it's not clear to me whether that engine is the same as the SCE-200, which is meant for replacing the GSLV-Mk3's L110 stage (UDMH/N2O4).

Logically, it might be practical for ISRO to first get SCE-200 non-reusably flying on GSLV-Mk3, which is an expendable launch vehicle, even while it works to achieve reusability on its semi-cryo engine meant for TSTO.

Offline srikanthr124

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Re: SCE-200 semi-cryo engine info
« Reply #87 on: 06/15/2017 06:59 PM »
SEE THIS VIDEO IT HAS VERY INTERESTING INFORMATION ABOUT SCE-200 & CE-60 600KN CRYO ENGINE  AND MORE LATEST LPSC FEB 2017 LAST 5 MINUTES REGARDING RE-USABILITY AND MAN RATED ABILITY OF SCE-200

WHAT IS EVIDENT FROM THIS VIDEO IS THAT SCE-200 DESIGNED BASED ON RE-USABILITY IN MIND FROM SCRATCH ONWARDS AND ALSO MAN RATED,SO PROVISIONS FOR MULTIPLE ENGINE BURNS RESTARTS IN SPACE ARE ALSO TAKEN INTO CONSIDERATION HE ALSO SAID UP TO 15 TIMES RE-USABILITY OF ENGINE IS POSSIBLE.... :)



« Last Edit: 06/16/2017 08:27 AM by srikanthr124 »

Offline baldusi

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SCE-200 semi-cryo engine info
« Reply #88 on: 06/15/2017 08:43 PM »
Please understand that all modera rocket engines are somewhat reusable. The reusability is needed so it can be bench tested before installation, and do a graceful launch abort after ignition but before lift off.
It also helps enormously with testing and certification, since you need something close to 100 tests. Without reusability you'd need 100 engines, with 15 you could do away with less than 10.
But, the real question is the ease of refurbishment and the air starts and restart capability. And engine life, of course.
« Last Edit: 06/15/2017 08:44 PM by baldusi »

Offline K210

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Re: SCE-200 semi-cryo engine info
« Reply #89 on: 06/16/2017 02:02 AM »
Current version in development is designed to be expendable with follow-on version designed to support reuse.

Actually SCE-200 is being developed with reusability in mind. Each engine can be reused up to 15 times.

I know the semi-cryo engine intended for use in the planned TSTO (Two-Stage-To-Orbit) vehicle is supposed to be reusable as  you've said, however it's not clear to me whether that engine is the same as the SCE-200, which is meant for replacing the GSLV-Mk3's L110 stage (UDMH/N2O4).

Logically, it might be practical for ISRO to first get SCE-200 non-reusably flying on GSLV-Mk3, which is an expendable launch vehicle, even while it works to achieve reusability on its semi-cryo engine meant for TSTO.

All liquid fuel rocket engines are reusable to a certain extent. The CE-20 that was recently flown on MK-3 was fired 2-3 times before it was flight tested.

Offline vineethgk

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Re: SCE-200 semi-cryo engine info
« Reply #90 on: 06/18/2017 03:10 AM »
Confirmation on the targeted SCE-200 timelines, current state of tests and other associated activities

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The testing facilities at the ISRO Propulsion Complex, Mahendragiri, are being augmented for the engine being developed by the Liquid Propulsion Systems Centre here under a project codenamed SCE 200. Three of the four turbo pumps of the new engine have been tested and the pre-burner and thrust chamber are being readied for testing, LPSC Director S. Somanath told The Hindu.

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ISRO scientists have simultaneously begun work on the stage configuration. ‘‘We hope to complete the development of the engine by 2019. The stage test is expected to take place by 2020, followed by the first flight test in 2021,’’ he said.

They appear to be considering a configuration with a clustered kerolox core and a more powerful hydrolox upper stage (either clustered CE-20 or a new, more powerful engine) rather than one powered by a single CE-20.
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A clustered semi cryogenic booster with a more powerful cryogenic upper stage is another possibility. ‘‘Once we have mastered the technology, we could possibly go on to modular development of rockets with different configurations,’’ Mr. Somanath said.

On the necessary supporting tech and infrastructure
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But before that, ISRO needs to ensure that critical technologies such as special materials and coatings, brazing process, kerosene refinement, combustion instability and control components are mastered and the necessary infrastructure is in place.
« Last Edit: 06/18/2017 03:12 AM by vineethgk »

Offline Steven Pietrobon

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Re: SCE-200 semi-cryo engine info
« Reply #91 on: 06/18/2017 08:43 AM »
Does any know what the name of GSLV Mk.III with the SCE200? Is it GSLV Mk.IV?
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline TrevorMonty

Re: SCE-200 semi-cryo engine info
« Reply #92 on: 06/18/2017 09:42 AM »
A 2-3 x SCE200 booster would handle GTO missions HSF to LEO without SRBs. Add there large SRBs with large US and 25-30t might be possible. For HSF the other possibility is flying Dreamchaser for SNC, its in need of low cost LV.


Offline vineethgk

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Re: SCE-200 semi-cryo engine info
« Reply #93 on: 06/18/2017 10:59 AM »
Does any know what the name of GSLV Mk.III with the SCE200? Is it GSLV Mk.IV?
They haven't mentioned any names so far, but it could very well be GSLV MkIV going by their 'functional' naming convention. Unless of course, they plan to use that core with smaller solids to create a family of launchers (Unified Launch Vehicle - ULV) to replace PSLV and GSLV-II as well, in which case the rocket could be named ULV-xx.

Offline K210

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Re: SCE-200 semi-cryo engine info
« Reply #94 on: 10/23/2017 01:31 PM »
According to ISRO fully integrated SCE-200 will be delivered ready for testing by the end of year. A hot fire should take place between Jan-June 2018 depending on readiness of new testing facility.

Offline srikanthr124

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Re: SCE-200 semi-cryo engine info
« Reply #95 on: 10/26/2017 11:40 PM »
According to ISRO fully integrated SCE-200 will be delivered ready for testing by the end of year. A hot fire should take place between Jan-June 2018 depending on readiness of new testing facility.

from where do you got this information...it is really a very good news but i am unable to find anything regarding this news on Internet...

Offline K210

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Re: SCE-200 semi-cryo engine info
« Reply #96 on: 10/28/2017 01:37 AM »
According to ISRO fully integrated SCE-200 will be delivered ready for testing by the end of year. A hot fire should take place between Jan-June 2018 depending on readiness of new testing facility.

from where do you got this information...it is really a very good news but i am unable to find anything regarding this news on Internet...

I have internal sources from ISRO.....

Offline srikanthr124

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Re: SCE-200 semi-cryo engine info
« Reply #97 on: 10/28/2017 10:48 AM »
According to ISRO fully integrated SCE-200 will be delivered ready for testing by the end of year. A hot fire should take place between Jan-June 2018 depending on readiness of new testing facility.

from where do you got this information...it is really a very good news but i am unable to find anything regarding this news on Internet...

I have internal sources from ISRO.....

Thank you for prompt reply hoping everything would go as per schedule.......
Best Wishes to ISRO & LPSC team...Good Luck!...