ISRO General News and Updates

[TopWatcher]

@Swesh @Indx TechStyle we have just lost 4th position on the moon, Japanese have just successfully landed their Hakuto-R lander ....and today UAE will be 4th country to put a rover on the moon, even though they hitched a ride on Japanese lander....f**k we have to adjust with 5th position

Who tell you. Their landing crashed. And coming 4 Or 5 won't impact. What important is having good technology to land.

 

[Chinmoy]

@Swesh @Indx TechStyle we have just lost 4th position on the moon, Japanese have just successfully landed their Hakuto-R lander ....and today UAE will be 4th country to put a rover on the moon, even though they hitched a ride on Japanese lander....f**k we have to adjust with 5th position

Typical Indian mentality.

 

[Vamsi]

View attachment 201917

Typical Indian mentality.

what about US-Soviet cold war then??

 

[Chinmoy]

what about US-Soviet cold war then??

As same as Indo-Pak, "Mine is bigger then yours."

 

[SavageKing456]

since most of them are american, they wouldn't count

Dont worry CY-3 will land safely this time
We will also succeed in Gaganyaan in 1st attempt since they're in no hurry

 

[Cheran]

@Vamsi @Swesh

Is this related to securing & thwarting cyber attacks against our satellites? (As opposed to hard kill)

 

[Vamsi]

@Vamsi @Swesh

Is this related to securing & thwarting cyber attacks against our satellites? (As opposed to hard kill)

yes

 

[blackleaf]

RTI by some one....

View attachment 199882

View attachment 199883

How long will testing of the SCE-200 take? If the intermediate configuration is going to start testing this year can we see a test flight with this engine in a few years?

 

[Vamsi]

How long will testing of the SCE-200 take? If the intermediate configuration is going to start testing this year can we see a test flight with this engine in a few years?

flight test NET 2026

 

[Hindu Nationalist]

 

[Vamsi]

VSSC released EoI for TPS tiles....it might be for RLV-ORV

EoI for 'Development And Supply Of Low Density Silica-Aluminosilicate Tiles For Launch Vehicle Applications'
VSSC invites Expression of Interest for 'Development And Supply Of Low Density Silica-Aluminosilicate Tiles For Launch Vehicle Applications'
[PDF] [Archived]

Scope of Work
Scope of the work involves

1. Development, of low density silica-aluminosilicate tiles targeting the following properties
   • Dimension: 300 x 300 x 110 mm billets
   • Composition: Silica fiber (65-75 wt %), Aluminosilicate fiber (Cera fiber) (20-25 wt %), Boron oxide (8-11 wt %)
   • Density of the product : 0.2-0.26 g/cc
   • Compressive strength : 300 kPa (min.)
   • Flexural strength: 500 kPa (min.)
   • Thermal conductivity: <0.1 W/mK at RT
   • CTE < 1 µm /m °C.

⮚ Testing of above properties shall be done at VSSC. Party shall machine test specimens from each batch of following dimensions from the billets and supply to VSSC for testing

• Compressive strength: 25x25x20 mm (20 mm in thickness direction)- 3 sample from one billet
• Flexural strength: 25x20x100 mm (20 mm in thickness direction)- 3 sample from one billet
• Thermal conductivity:150x80x22 mm (2no's) from one billet
• CTE (5x5x10 mm)- 4 numbers from one billet

⮚ Initial trials shall be done in batches. Minimum three sintering trials shall be done to optimize the process parameters. Minimum 30 tiles shall be realized in the developmental stage.
Realization and supply of 100 Nos, of billets of dimension 300 x 300 x 110 mm with optimized process parameters meeting all the required specifications.
Vendor qualification will be based on successful development, realization and supply of 100 nos. of Silica-aluminosilicate billets meeting all specification requirements.
Manufacturing Process (in brief):
I. Raw materials required:

1. *Silica fiber (Length: 4-10mm, Silica Content: 99% minimum, Fiber diameter: 8-16 micron).
2. Unlubricated bulk aluminosilicate fiber (Cera fiber) capable of withstanding 1260 °C
3. Boron trioxide (B2O3) (purity >98%)
4. Dispersant (Eg: Polyammonium acrylate, Polyvinyl acetate etc.)
5. Hydrochloric acid

*Silica fiber will be supplied as Free Issue Material from VSSC
II. Processing steps in brief

• Acid washing and water washing of both silica and aluminosilicate fibers to remove impurities.
• Uniformly dispersing required quantity of the silica fiber, aluminosilicate fiber and B2O3 in water with the help of dispersant with high speed mechanical stirrers.
• Vacuum molding of the fibers to realize the preform with desired size, (300x300xmm). Thickness shall be ~104 mm.
• Drying of the preform for the complete removal of water at 120°C. -preform density required is 0.15-0.17 g/cc.
• Sintering of the preform in high temperature furnace (continuous or batch furnace) at temp of ~1320°C with slow heating rates. Final density required is 0.2-0.26 g/cc.
• Test specimen machining.

 

[TopWatcher]

Any launch this month ??

 

[Varoon2]

Any launch this month ??

So far, there has been no change in the (provisional) launch date of May 24th, for the GSLV Mk2 with NVS-01 satellite.

 

[Vamsi]

Good news boyss....it's official now, ISRO is developing a new 1000KN thrust class Methalox engine ....it's gonna be open cycle engine ...i.e Gas-generator cycle engine....this engine gonna be our 2nd Indigenously designed engine after CE-20...this engine will be used in upcoming NGLV & will be reusable.....



@Indx TechStyle @Swesh I think it's time for a new dedicated Thread for Methalox engine

 

[Varoon2]

So far, there has been no change in the (provisional) launch date of May 24th, for the GSLV Mk2 with NVS-01 satellite.

Now, it is no earlier than May 29th

 

[Vamsi]

from r/ISRO

ISRO report on highlights and issues in dataset and product generation

Presented to 51st Coordination Group for Meteorological Satellites (CGMS-51) in 'Working Group 2' by Pradeep Thapliyal between 24-26 Apr 2023.

• INSAT-3DS is planned to be launched later this year, 2023, with many improvements to mitigate the issue related to the blackbody calibration and mid-night sun-intrusion.
• GISAT-2 is scheduled for launch in March 2024.

 

[Photon]

 

[Vamsi]

ISRO is seriously working on 100ton Methalox engine for NGLV

@Tactical Doge translate the video

 

[RedPhantom]

ISRO is seriously working on 100ton Methalox engine for NGLV

@Tactical Doge translate the video

Newsreader: Liquid Propulsion Systems Centre developed the hearts of PSLV(Vikas engine), GSLV and Mk2(CE-7.5 Cryogenic engine) LVM-3(CE-20 Crogenic engine). Now they are taking up the challenge of making engines for launchers bigger than GSLV, i.e, LOx Methane engine.

Dr. V. Narayanan: Using Liquid Oxygen and methane propellant, we have started a new engine development. A technology demonstrator has been realised and 6 to 7 test (or thrust?) experiment has been conducted using it. He have learned a lot of technology and using this knowledge, are developing a high thrust LOx engine based on the guidelines from chairman ISRO.

Newsreader: The first question is, if we already have liquid cryogenic engines, why do we need a new engine?

G. Nageshwaran: We use liquid oxygen and liquid hydrogen. Here we use liquid methane instead of liquid hydrogen in the LOx methane technology demonstrator engine and LOx scientific technology. The primary reason for that is that LNG, which is 95% methane is cheap and freely available. Cryogenic engines can be used in the final stage as well as a booster, so a single engine can be used for designing a rocket.

Newsreader: LOx engine is critical for interplanetary missions.

G. Nageshwaran: Jupiter, Uranus and the far away planets have oceans of liquid methane, which we can harness if we reach there. The speciality of this engine is that we can use that methane to run our engine.

Newsreader: The developments were very fast.

K. S. Bijukumar: Ordinarily, the LOx methane engine is a critical engine. But instead of testing the full engine in the first attempt directly, we tested ignition, which is the most important step. First we ignited the thrust chamber, then we ran the turbines and after that is the part called the gas generator, and after igniting it, we steadied(or studied?) the engine. Within a single year, we were able to realise the entire technology without any failure in the first try.

Newsreader: More powerful and re-usable engines will be a reality with LOx methane engines.

N. Jayan: ISRO is going to develop a 10 ton capacity reusable rocket that can be used multiple times, is very cheap and can compete in the international market, in the next 5 years. The most important component there is the LOx methane engine, and for that, LPSC has started the procedure for designing and developing a 100 ton thrust engine.

 

[Vamsi]

Newsreader: Liquid Propulsion Systems Centre developed the hearts of PSLV(Vikas engine), GSLV and Mk2(CE-7.5 Cryogenic engine) LVM-3(CE-20 Crogenic engine). Now they are taking up the challenge of making engines for launchers bigger than GSLV, i.e, LOx Methane engine.

Dr. V. Narayanan: Using Liquid Oxygen and methane propellant, we have started a new engine development. A technology demonstrator has been realised and 6 to 7 test (or thrust?) experiment has been conducted using it. He have learned a lot of technology and using this knowledge, are developing a high thrust LOx engine based on the guidelines from chairman ISRO.

Newsreader: The first question is, if we already have liquid cryogenic engines, why do we need a new engine?

G. Nageshwaran: We use liquid oxygen and liquid hydrogen. Here we use liquid methane instead of liquid hydrogen in the LOx methane technology demonstrator engine and LOx scientific technology. The primary reason for that is that LNG, which is 95% methane is cheap and freely available. Cryogenic engines can be used in the final stage as well as a booster, so a single engine can be used for designing a rocket.

Newsreader: LOx engine is critical for interplanetary missions.

G. Nageshwaran: Jupiter, Uranus and the far away planets have oceans of liquid methane, which we can harness if we reach there. The speciality of this engine is that we can use that methane to run our engine.

Newsreader: The developments were very fast.

K. S. Bijukumar: Ordinarily, the LOx methane engine is a critical engine. But instead of testing the full engine in the first attempt directly, we tested ignition, which is the most important step. First we ignited the thrust chamber, then we ran the turbines and after that is the part called the gas generator, and after igniting it, we steadied(or studied?) the engine. Within a single year, we were able to realise the entire technology without any failure in the first try.

Newsreader: More powerful and re-usable engines will be a reality with LOx methane engines.

N. Jayan: ISRO is going to develop a 10 ton capacity reusable rocket that can be used multiple times, is very cheap and can compete in the international market, in the next 5 years. The most important component there is the LOx methane engine, and for that, LPSC has started the procedure for designing and developing a 100 ton thrust engine.

So, they are seriously considering Methalox engine for NGLV, not SCE-200, it seems SCE-200 might be simply limited to LVM-3