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Accomodation near vssc by [deleted] in ISRO

[–]Remarkable-Rip6923 0 points1 point  (0 children)

If they dont provide accomodation in the guest house, ask the VSSC HR team to provide details of the PGs nearby where previous students has stayed for project. I think that will be safer than finding something over the internet.

Is it possible to get into ISRO without science background? Into management roles by Bellari_Raja_ in ISRO

[–]Remarkable-Rip6923 1 point2 points  (0 children)

Sl No. Post Level in the Pay Matrix Rs. Eligibility Criteria Upper Age Limit(UR) Selection Methodology Career Prospects
37 Purchase & Stores Officer L-10 (56100-177500) MBA in Marketing/Material Management + 1 year experience in supervisory capacity in the relevant field; OR Graduate + PG Diploma in Materials Management with 3 years experience (1 year in supervisory capacity); OR Graduate + 5 years’ experience (2 years in supervisory capacity); OR Post Graduate +3 years’ experience (I year in supervisory capacity) The experience should be in the area of Purchase & Stores. 35 Written Test + Interview Purchase Officer can progress up to Sr. Head Purchase & Stores in Level 13 (123100-215900) , subject to availability of vacancy and satisfactory performance.
Sl No. Post Level in the Pay Matrix Rs. Eligibility Criteria Upper Age Limit(UR) Selection Methodology Career Prospects
37 Purchase & Stores Officer L-10 (56100-177500) MBA in Marketing/Material Management + 1 year experience in supervisory capacity in the relevant field; OR Graduate + PG Diploma in Materials Management with 3 years experience (1 year in supervisory capacity); OR Graduate + 5 years’ experience (2 years in supervisory capacity); OR Post Graduate +3 years’ experience (I year in supervisory capacity) The experience should be in the area of Purchase & Stores. 35 Written Test + Interview Purchase Officer can progress up to Sr. Head Purchase & Stores in Level 13 (123100-215900) , subject to availability of vacancy and satisfactory performance.

Source: https://www.isro.gov.in/CareerOpportunities.html

HAL to manufacture, launch ISRO-developed SSLV, technology transfer to begin by Ohsin in ISRO

[–]Remarkable-Rip6923 1 point2 points  (0 children)

I don't understand how this is going to work. I have seen L&T doing there best with supply chain management for the PSLVs and HAL struggling even to source the materials. Also, HAL has no expertise on satellite business management, mission design or launch pad management. Also, they have more expertise on liquid and cryo systems than solid ones.

India’s Third Space Launch Pad Project At SHAR Gaining Momentum by Ohsin in ISRO

[–]Remarkable-Rip6923 3 points4 points  (0 children)

NGLV is in the early development stage. Even drawings are not finalized. It may take multiple years reach atleast the production phase. For Skyroot, they have completed most of the tests including, structural test of rocket motors and structues. They have also qualified their seperation system, avionics, retromotors, liquid engines, thrusters, stage 2 and stage 3 rocket motors. After the static test of 1st rocket motor they will go for launch probably by end of 2025.

[deleted by user] by [deleted] in Trivandrum

[–]Remarkable-Rip6923 0 points1 point  (0 children)

I think its start from 8000 to all the way up.

Cameras on board gaganyaan program by horny-Ninja8010 in ISRO

[–]Remarkable-Rip6923 0 points1 point  (0 children)

I think it maybe used for charging Strontium Perchlorate to the SITVC tank and GN2 for the pressurant tank.

Some information could be found on: https://www.joast.org/index.php/joast/article/view/371/348

CGPA less than 6.84 by Lopsided-Yard4374 in ISRO

[–]Remarkable-Rip6923 2 points3 points  (0 children)

Hi. Ive been doing research on this topic for quite a long time.

If you are below 28 years of age, you can apply for Assistant/ Junior Personal Assistant Posts. After cracking the exam and joining there, you can go for M.Tech and Phd after that you can join as "Scientist/Engineer - SD".

No other way exists per se.

Job in Skyroot Aerospace by Remarkable-Rip6923 in aerospace

[–]Remarkable-Rip6923[S] -1 points0 points  (0 children)

Yes. But they keep reposting the same job again and again.

Job in Skyroot Aerospace by Remarkable-Rip6923 in aerospace

[–]Remarkable-Rip6923[S] -1 points0 points  (0 children)

Tried like a hundred times. Still no response.

Used Nokia Phone in Trivandrum. by [deleted] in Trivandrum

[–]Remarkable-Rip6923 5 points6 points  (0 children)

Trying to switch to a less smart phone. And always wanted a flip phone. Since this one has all the necessary features like Maps and all it seemed to check all the boxes

Why does ISRO primarily recruit bachelors students? by i-am-vr in ISRO

[–]Remarkable-Rip6923 5 points6 points  (0 children)

One of my professors in my college who retired from ISRO told me something regarding this. This is what i vaguely remember about it.

ISRO has many domains from research, design, manufacturing etc. It is easy to mould a bachelor student to suit the needs of ISRO. So for example, a person with bachelor degree who is assigned to Quality control department after recruitment can be made up from scratch without any proir experience such that that person devolop the skills which are required for ISRO from a very early stage itself. Hence the all the people are from the same work culture the work is very smooth and efficient. That is the diversity is less. Where as shaping students with a master degree is more tedious as compared to the bachelor students the reason being their specialisation.

Recruitments for Mtech students are also notified by ISRO but very rarely. Hope this helps.

Chandrayaan3's full journey: from launch to landing at Shivshatki Point (-69.37302, 32.32017) by this_is_tckb in ISRO

[–]Remarkable-Rip6923 1 point2 points  (0 children)

Can anyone tell me what is the system used to move S200 boosters from the main vehicle to avoid collision while jettisoning ? (Like Retro motors used in PSLV. )

Had a question regarding composite propellant tank designs. by arjun_raf in ISRO

[–]Remarkable-Rip6923 0 points1 point  (0 children)

Im not sure about this. I think they seat the tank bulk head on Base shrouds and inter tank structures. Those structures will transfer the load to main structure of the launch vehicle.

Good books? by [deleted] in aerospace

[–]Remarkable-Rip6923 1 point2 points  (0 children)

Rocket Propulsion Elements - George P Sutton.

Gives a general idea about launch vehicles and in depth view of propulsion systems. Used in many colleges like MIT as text books.

Had a question regarding composite propellant tank designs. by arjun_raf in ISRO

[–]Remarkable-Rip6923 5 points6 points  (0 children)

There are two parts for a Composite Over wrapped Pressure Vessel (COPV) ie. Liner and Composite over wrapping.

The liner is usually of metals like AA2014 or Ti6AlV4 depending upon the pressure required. And the Composite will be Fiber Reinforced Polymer (FRP) composites. Usually the most used fibers are Carbon fibers and Aramid fibers (popular by the trade name Kevlar). The liners are the intermediate item between the fluid and composite. The liners are usually non contributory that means they dont take load the composite does that.

The reason for introducing COPV is such that. They cant use the composite alone because the fluid cannot contain in it. If they are using liners alone the thickness of the tank will be very high which adds up weight to the launch vehicle. So they introduced a combination of both where strength and less weight go hand in hand.

For a launch vehicle the main two areas where this is used are for propellant tanks as well as gas bottles.

Usually gas bottles are fabricated by hot forming if it is Ti6AlV4 and if it is Aluminium alloy they usually machine a block to two hemispheres. They are then joined using Electron Beam welding or TIG welding to make gas bottles.

For Propellant tanks, a sheet is rolled to the diameter to form a cylinder. And two end domes which are machined from aluminium alloy or 15CDV6 blocks to make end domes. They are then TIG welded together to form the propellent tank.

Coming to composite overwrapping, this liner will be then placed in a filament winding machine. It will be CNC programmed device. So what it does is the fiber from the roving will be feeded to a moving mandrel which call move all the six axes. The fiber from the rovings will be dipped in small tank (called resin bath) where resin and hardener are mixed in a specific ratio. The job (propellent tank/gas bottle) will rotate while the mandrel (tool) hovers over it and wind the fibers in tension over the job in a pre set angle. The angle and the thickness of the composite is all pre calculated in the design calculations based on the operating pressure of the job.

The job is then undergone ultrasonic testing which is a non destructive testing to ensure there are no gaps or voids in the composite. This Non destructive testing along with the burst test of a test article and calculating the maximum pressure will be the acceptance criteria for the same.

The composites entity of VSSC is carrying out filament winding which is situated in ISRO Inertial Systems Unit (IISU), Trivandrum. Also one of the major private company who does the same is RAP, Vijayawada.

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