Bharat Rakshak

arvin

https://economictimes.indiatimes.com/in ... 395150.cms

Air india preliminary report

arvin

https://www.financialexpress.com/india-news/aaib-submits-preliminary-report-on-ai-plane-crash/3907442/ The preliminary report includes aircraft information, crew details, weather conditions, aerodrome data, a description of the accident, and the current status of the investigation, but it does not y...

arvin

And Kaveri thread if you have low BP, since engine has low BP ratio (0.16 : 1).

arvin

https://sldinfo.com/2010/08/a-conversation-with-an-f-35-maintainer-about-the-impact-of-the-new-f-35-actuator-system-on-maintenance/ Old article from 2010 describing how F35 hydraulics are maintainence friendly. Martinez: They greatly simplified the hydraulic systems because everything is self-contai...

arvin

Tejas NP5 variant will be used to train naval pilots

https://swarajyamag.com/defence/lca-nav ... evelopment

arvin

If signal lost at 625 ft, then APU also gone bad ?? Waiting for probe to confirm if RAT was deployed. If it indeed it was then its full power failure onboard. 787 also has Main battery and APU battery. So multiple redundancy here. What about the 2016 software controller bug? Is it possible some sor...

arvin

ernest wrote: ↑13 Jun 2025 07:57

Excellent news - is DP dual purpose? Dornier getting NASM-SR then?

Think Jackie Shroff.

arvin

If signal lost at 625 ft, then APU also gone bad ?? Waiting for probe to confirm if RAT was deployed. If it indeed it was then its full power failure onboard.
787 also has Main battery and APU battery. So multiple redundancy here.

arvin

Same sentiments here. Specially since the ops have not ended. And Americans are still sifting thru the rubble and giving getting under the skin statements.

Better to give G7 a miss.
Doval got a seasonal flu hence cancelled his visit to Russia.

arvin

The damage we inflicted is now becoming public. S400's 92N6E radar has a range of 340 kms, according to russian sources(link below). The only missile in this family that has more than 300 kms range is the 40N6E. Unless it's not DDM and we actually hit their craft at these ranges, this will be a new...

arvin

Landers tipping over seems like a design \ algorithm issue where they either failed to reduce the horizontal velocity to zero before touch down or the landing area had a steep slope. Chandrayaan 3 \ Vikram took care of it by way of a hover mode at 150 meters above surface to assess the risk and then...

arvin

While rest of India plans chalo Goa as part of vacation, folks in GTRE will plan for chalo Gromov to have a nice time.

arvin

Maybe they reduced the engine fan visibility due to elongated fuselage .

arvin

<rant> I hope we will not be looking at these units for second hand purchase in 2060 </rant> Not to worry, we will start looking at them in 2060, and will still fail to close by 2100. Look at M2K second hand saga....What a bunch of clowns we are... With no provision in budget for flying test beds o...

arvin

Japan's SLIM lander has survived the 2nd Lunar night. Must be having robust insulation and design margins for electronics, battery and cameras to survive -130 C and still wake up and send pictures. https://www.space.com/japan-slim-moon-lander-survives-second-lunar-night "According to the acquir...

arvin

https://i0.wp.com/spacenews.com/wp-content/uploads/2024/01/20240125-4_01_LEV-2-JAXA-cr.jpg?resize=1024%2C648&ssl=1 SLIM lander has survived the lunar night. It responded to commands sent by mission control. My guess is, its upside down orientation with part of the body touching the lunar surfac...

arvin

https://www.space.com/intuitive-machine ... r-payloads

IM's Odysseus has landed on rhe moon.
Signal received is weak, could be antenna orientation issu.e .
First US landing after apollo and first private lander on moon.

arvin

Chandrayaan-3 Mission: Ch-3 's Propulsion Module (PM) takes a successful detour! In another unique experiment, the PM is brought from Lunar orbit to Earth’s orbit. Although orbiting earth, looks like apogee of PM is quite close to Moon's SoI (Sphere of influence). Interesting they didnt bring it cl...

arvin

Excellent job ISRO for bringing back the PM. India becomes 4th country to demonstrate breaking free from lunar gravity to re enter earth orbit. My post on 22nd Aug 2023 in CY 3 thread. https://forums.bharat-rakshak.com/viewtopic.php?p=2598146#p2598146 I think the PM alone can be bought back. The Pro...

arvin

A Nandy wrote: ↑22 Sep 2023 11:55 https://www.youtube.com/watch?v=ewuV1xx_Nrk

Asianet News ‘Dialogues’ with ISRO Chairman S Somanath

Thanks for posting.
Towards the end at around 35.17 there is mention of human landing on the moon.
The hop experiment was a baby step in that direction.

arvin

So, how does ATAGS’s “shoot & scoot” ability compare with the Bofors in service with the IA? I remember it was a key criterion when Bofors was selected There are less than 200 of the original 400 Bofors guns left in service. For the first time we have multiple locally designed and produced alte...

arvin

^^^
Parker solar probe closest approach to sun will be 6.9 million km in 2025.
They will be able to shield the electronics even at such close proximity.

arvin

Vikram soft-landed again! https://twitter.com/isro/status/1698570774385205621?t=NahcNIZWvh9syahBc5l6mg&s=19 Did we know this was planned? Wow! What a nice surprise. :D :D :D Its indeed a welcome surprise. Was able to lift up by 40 cm. Will give useful insight for thrust required for sample retu...

arvin

^^^
Luna 25 weighs 1.8 tons with scientific payload of 30 kg.
Beyond earth it was propelled by Fregat space tug which was their equivalent of CH3 propulsion module.

arvin

^^^ SSSalvi Sir, About RHU I dont think the news is credible. If it indeed carried one, the CH3PM needs to have the distinctive radiator fins. None of it was visible. DAE would have been involved from the very begining and safety measures would have different. Such things can't be done hush hush due...

arvin

putnanja wrote: ↑23 Aug 2023 20:52
sanman wrote: ↑23 Aug 2023 20:49 First image from Vikram of the Moon's surface following the landing:

Can you please share the source of the image? Would be good to show the source when posting images

https://www.news18.com/india/chandrayaa ... 47583.html

arvin

Congratulations ISRO!!!!!

arvin

Altitude is 1 km

arvin

Even more feul would have been left over, if we allowed the cryogenic stage to burn to depletion as was done during CY2. From Wikipedia Finally Chandrayaan-2 was launched on board the LVM3 M1 launch vehicle on 22 July 2019 at 09:13:12 UTC (14:43:12 IST) with a better-than-expected apogee as a result...

arvin

SSS and other gurus, i was looking at dry mass and wet mass of CY-3, looks like there might be fuel left in PM, how i wish ISRO surprises us with Vikram taking off mating with PM and coming back to earth and crash burning. Hope CY-4 is already being planned for to-fro trip I think the PM alone can ...

arvin

One side whole India is praying and is with ISRO and at other end is Actor like Prakash Raj mocking ISRO - see his tweet below :evil: While the actor did not specify the man in the cartoon, many social media users slammed the actor for making fun of former Indian Space Research Organisation chief K...

arvin

Regarding Luna 25, hope Kremlin acts professionally and supports Roscosmos to investigate, rectify and relaunch.
Kinzhal aftermath treason incidents shouldn't be repeated.

arvin

^^^
ISRO's semi cryo is staged combustion cycle, which is far more difficult to master.
Agnikul might be using gas generator I guess. Their chamber pressure is only 10 bar

arvin

https://www.financialexpress.com/lifest ... s/3192307/

PSLV successfully launched DSSAR and other 6 satellites.

arvin

5th orbit raising maneovure done

https://twitter.com/isro/status/1683767 ... gr%5Etweet

Orbit expected to be 127609 km x 236 km.

Aug 1 will be TLI firing

arvin

Amber G, the quoted part in your above post is written by sanman. SSSalvi missed the "quote" while quoting him so its seen as a continuos post.

arvin

In case of Earth-Moon pair The L1 distance from earth centre is 323050 Kms.( 316672 kms above Earth. ) For TLI orbit Apogee is 362000 kms, way beyond L1. Moon is away when CH3 is in the Apogee. In fact the CH3 is moving away from Moon initially. But its speed is more so it comes towrds CH3. As time...

arvin

https://twitter.com/isro/status/1681293 ... 62499?s=20

Its 51400 km x 228 km.

arvin

3rd orbit raising maneovure performed successfully as per ISRO.

https://twitter.com/isro/status/1681236 ... 74850?s=20

arvin

https://m.timesofindia.com/home/science ... 804633.cms

2nd orbit raising maneovure done.
Perigee at 220 km and will remain there for next three orbit maneovure.

Search found 674 matches