ISRO General News and Updates

[Blademaster]

I was off but not by that large margin:
NASA Budget from late 1950s till late 1960s:

Calendar Year	NASA budget
Nominal Dollars​	% of Fed Budget[5][6]​	2022 Constant Dollars​
	(Millions)​		(Millions)​
1958​	89​	0.10%​	903​
1959​	145​	0.20%​	1,456​
1960​	401​	0.50%​	3,967​
1961​	744​	0.90%​	7,286​
1962​	1,257​	1.18%​	12,161​
1963​	2,552​	2.29%​	24,394​
1964​	4,171​	3.52%​	39,356​
1965​	5,092​	4.31%​	47,285​
1966​	5,933​	4.41%​	53,513​
1967​	5,425​	3.45%​	47,612​
1968​	4,722​	2.65%​	39,737​
1969​	4,251​	2.31%​	33,923​

It reached ~4.5% for 2 years and then scaled back to above 2% once Budget started to divert to Vietnam.

You said % of GDP not budget. And yes you were way off. You said 10%. The closest it came to 10% was 4.5%, hardly close to 10%.

 

[Swesh]

Unconfirmed source PSLV c58 is likely to be in December 14

 

[Swesh]

India's weakest area | Countries with most military satellites in the world

#india #military #satellites @WorldAffairsUnacademy India's weakest area | Countries with most military satellites in the world | By Prashant Dhawan#geop...

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Do consider trade-off on launch opportunities I am alerting many people in this forum time to time

 

[SKC]

You said % of GDP not budget. And yes you were way off. You said 10%. The closest it came to 10% was 4.5%, hardly close to 10%.

Yes, looking back to the post, it could have been worded better.
Also, 4.5% is closure to 10% than .01%

 

[Blademaster]

Yes, looking back to the post, it could have been worded better.
Also, 4.5% is closure to 10% than .01%

No I was correct. You were way off.

 

[omaebakabaka]

Anyone knows @Vamsi, youngster that posts good stuff on ISRO threads? Haven't seen his posts in a while now....hope he is well.

 

[Swesh]

Anyone knows @Vamsi, youngster that posts good stuff on ISRO threads? Haven't seen his posts in a while now....hope he is well.

No post since oct 3

 

[Swesh]

LCA TEJAS MK1 & MK1A: News and Discussion

Does that cause any issues with the fuel feed system of the plane? Like for example, the F-16 has two feeds: AFT/LEFT and FWD/RIGHT, and tanks get emptied first in that order. What sort of feed system does the Tejas have, and will it cause issues like fuel traps/etc Tejas has 5 fuel points...

defenceforumindia.com

 

[Swesh]

https://news.italy24.press/trends/972503.html

 

[SUPERPOWER]

India's weakest area | Countries with most military satellites in the world

#india #military #satellites @WorldAffairsUnacademy India's weakest area | Countries with most military satellites in the world | By Prashant Dhawan#geop...

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Do consider trade-off on launch opportunities I am alerting many people in this forum time to time

Even i think that we dont have anything in defence space assets and we are diverting our money in Solar, Moon, Mars mission...we first need to make out space strong than other explorations..

 

[Swesh]

Even i think that we dont have anything in defence space assets and we are diverting our money in Solar, Moon, Mars mission...we first need to make out space strong than other explorations..

Sooner on piggyback of china pakis gona launch 1-2 defence assets each year you can bookmark my comments.

 

[Indx TechStyle]

Sooner on piggyback of china pakis gona launch 1-2 defence assets each year you can bookmark my comments.

Required net centric ability at ground at first place.

 

[Swesh]

Sooner on piggyback of china pakis gona launch 1-2 defence assets each year you can bookmark my comments.

Real thing is maintainenece would they will be able to maintain them??

 

[Swesh]

Required net centric ability at ground at first place.

Some Tila launch site I guess

 

[Chinmoy]

Required net centric ability at ground at first place.

IMO, SC is pivotal to extend the upper atmosphere presence.

 

[Indx TechStyle]

Some Tila launch site I guess

Can't go beyond sounding rockets. Does even that barely. Marking a site doesn't make it a launch pad. Construction of one for SLV will take 10 years.

IMO, SC is pivotal to extend the upper atmosphere presence.

The matter remains either of launch or satellite operations infrastructure is neither present nor in any development in Pakistan.

Pakistan would rather keep sourcing information from outside as it cannot operate satellites on a notable scale.

 

[Swesh]

RHU is flown on propulsion module to test spaceworthiness

Roaming on the Moon

Prof. Santosh Vadawale (Physical Research Laboratory, Ahmedabad)

www.youtube.com

Timestamp 1:26:17 play with caption on

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View attachment 227301

View attachment 227302

So newswalas spotted this after me

Future Moon landers in ISRO’s Chandrayaan programme will be able to survive lunar nights

The Vikram Lander and the Pragyan Rover on the surface of the Moon have not responded to ISRO's wake up calls. Scientists believe this is because the lunar hardware did not survive the harsh night. Future Chandrayaan missions to the lunar surface do not need to meet the same fate as the...

www.news9live.com

Vikram Lander and the Pragyan Rover on the surface of the Moon have not responded to ISRO's wake up calls. Scientists believe this is because the lunar hardware did not survive the harsh night. Future Chandrayaan missions to the lunar surface do not need to meet the same fate as the Chandrayaan 3 mission.
Written By: Aditya Madanapalle
Published:
25 Oct 2023 12:21M

Illustration of Vikram Lander on lunar surface. (Image Credit: ISRO).

The success of the Chandrayaan 3 mission has sent expectations from ISRO skyrocketing, with Prime Minister Narendra Modi directing the space agency to land an Indian on the surface of the Moon by the year 2040. To achieve this ambitious goal, ISRO will need to send a series of missions to the lunar surface, ensuring that the lunar exploration programme will have a number of follow-up missions after Chandrayaan 3.
The Chandrayaan 3 lander has achieved all the planned goals of the mission. There was a sliver of a chance that the hardware would spring back to life on exposure to sunlight, after the harsh lunar nights that last for fourteen Earth days, during which temperatures can drop to -150°C. The Lander and the Rover were oriented towards the rising Sun, with the batteries fully juiced up, and even though ISRO had done everything it could to continue the mission, Chandrayaan 3 did not respond to the wake up calls by ISRO.


The reason why the hardware did not survive the lunar night was because it did not have a nuclear heat source, which the Russian Luna 25 lander had. The heat source would have allowed operations on the lunar surface for over a year, but the lander unfortunately crashed into the Moon just before the landing attempt. On board was a radioisotope thermoelectric generator (RTG), that could provide power to the spacecraft apart from keeping it warm. Now, Santosh Vadawale, astrophysicist at the Physical Research Laboratory (PRL) in Ahmedabad has made the startling revelation that there is in fact a radioisotope heater unit (RHU) on the Chandrayaan 3 mission.
A nuclear heat source is necessary for landers or rovers to survive the lunar nights
The RHU is however, not on the Chandrayaan 3 Lander or Rover, but instead on the Propulsion Module (PM), and is a demonstration of the technology. In a lecture at TIFR, Vadawale said, “RTG still will be little bit away. It will take some time. RHU has been developed by BARC and ISRO. It is flying right now on Chandrayaan 3. The only issue was since all this is much later, there was no real time to make any changes either in Lander or Rover. Instead of RHU being on Lander or Rover, it is on Propulsion Module.”
The RHU was developed late in the realisation of the mission, which is why it could not be included on the Lander. Vadawale explained, “The idea was only to test and qualify all the processes related to handling of RHU. Thermal simulations and anticipating temperatures in terms of different power and thermal conditions is a very very involved task. So, using RHU on Propulsion System, the idea was only to give the thermal systems sufficient input to handle the RHU kind of system, in space, and then establish the processes to use the RHUs. That is already there. Next lander, I suppose, it would not be difficult to use the right RHU.”
The RHU on the Propulsion Module is a low-power demonstration, and was only a two or three watt source. With further development, it is possible to include a five watt RHU within a rover or lander. ISRO is already in the process of developing such a device.
Previously, Project Director of Chandrayan 3 at ISRO, P Veeramuthuvel, in an interaction with students at NIT Tiruchirappalli had said, “Chandrayaan 3 was a short term mission. We have to have a long-term survivability also, for which we need to have a nuclear resource. Because lunar night no, we are not able to survive. In the lunar nights, it is a very low temperature, way beyond our storage limits. So we have to warm the systems, during the lunar night, irrespective of the surface temperature reaching -150°C, lander systems we have to keep it normal. Like how during the winter we protect with a jacket. So even with a thermal protective system, we cannot attain thermal equilibrium. Inside, we have to have some nuclear resources, which will keep warmer. So that technology is required. We are in the process of doing that.”

 

[Swesh]

Read carefully there is a dargah in isro campus people don't get security check there

 

[justaguy]

Read carefully there is a dargah in isro campus people don't get security check there

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There is so much carelessness in India. Would something like that happen in China?

 

[justaguy]

India's weakest area | Countries with most military satellites in the world

#india #military #satellites @WorldAffairsUnacademy India's weakest area | Countries with most military satellites in the world | By Prashant Dhawan#geop...

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Only 2 not 9 as shown in video.