Search found 1595 matches

by member_28108
28 Jun 2016 18:17
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Ion thrusters lsp is slow but steady a spring gives one shot and that's it.ion thrusters are to fire for much longer time and that is how they can theoretically reach stupendous velocities but not rapidly but over a very vetylong time
by member_28108
25 Jun 2016 07:18
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

One of Buzz Aldrin's seminal papers in MIT was to establish the method for orbital rendezvous. If you impart velocity to an object in orbit it will not approach another body but will instead obtain a higher orbit. The reverse occurs during slowing. That us why for orbital rendezvous if you want to ...
by member_28108
25 Jun 2016 07:08
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

As per ISRO reports the dual launch adapter unit houses the other major payload. (2 satellites stacked on each other) all the other satellites sit on the base of the DLA-U. The cover of the DLA-U is ejected(in fact the 4th stage is rotated specially to allow ejection such that the satellite ejection...
by member_28108
23 Jun 2016 14:38
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

One of Buzz Aldrin's seminal papers in MIT was to establish the method for orbital rendezvous. If you impart velocity to an object in orbit it will not approach another body but will instead obtain a higher orbit. The reverse occurs during slowing. That us why for orbital rendezvous if you want to c...
by member_28108
22 Jun 2016 08:43
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

All satellites launched recognition test to be done
by member_28108
20 Jun 2016 22:22
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Filling of Mixed Oxides of Nitrogen (MON-3) of PS4 is completed Date: Jun, 20, 2016 Filling of Mixed Oxides of Nitrogen (MON-3) of PS4 is under progress Date: Jun, 20, 2016 Mono Methyl Hydrazine (MMH) filling operation of Fourth stage (PS4) of PSLV-C34 is completed by 12:06 hr (IST). Preparations fo...
by member_28108
19 Jun 2016 22:15
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Mission Readiness Review (MRR) committee and Launch Authorisation Board (LAB) have cleared the 48 hr countdown starting at 09:26hr IST on Monday, June 20, 2016 and the launch of PSLV-C34/Cartosat-2 Series Satellite Mission for Wednesday, June 22, 2016 at 09:26hr IST
by member_28108
19 Jun 2016 08:59
Forum: Trash Can Archive
Topic: LCA Tejas: News and Discussions
Replies: 4036
Views: 260772

Re: LCA Tejas: News and Discussions

^ No it is not ADA designs and HAL constructs
by member_28108
11 Jun 2016 10:18
Forum: Military Issues & History Forum
Topic: INS Vikrant News and Discussion
Replies: 1744
Views: 132342

Re: INS Vikrant News and Discussion

^What are we doing fighting tortoises ?
by member_28108
11 Jun 2016 07:43
Forum: Technology & Economic Forum
Topic: Indian Education System
Replies: 3724
Views: 206542

Re: Indian Education System

No the top salaried people are those PCM tutors in JEE preparation classes. My Son's teacher when he was in 12th (He was an excellent teacher) was poached by another JEE coaching center for 1.6 Crores per annum. He had issues with the first center so left. He was an author of a book. He gave a copy ...
by member_28108
08 Jun 2016 21:09
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

It was spotted floating and did not disintegrate. It would have sunk after some time. They did not expect the structure to survive after landing as the planned Landing was targeted 5 meters above the water. They may ahve tried to recover it for all you know but that was not planned.
by member_28108
04 Jun 2016 22:21
Forum: Trash Can Archive
Topic: Indian Missiles and Munitions Discussion - June'14
Replies: 4681
Views: 662373

Re: Indian Missiles and Munitions Discussion - June'14

Was the recent Notam for K4 including that area ?
by member_28108
04 Jun 2016 22:18
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

This "If it is private it is a panacea" should stop.If the PSU does well privatize. If it doesn't do well privatize.That isn't the solution to everything.
by member_28108
02 Jun 2016 19:59
Forum: Technology & Economic Forum
Topic: Indian Education System
Replies: 3724
Views: 206542

Re: Indian Education System

^ What you say is absolutely true but this is real and happening.It is not an endorsement by any means but this thing has become the norm in many cities.This is very bad. Blame it on loss of values.
by member_28108
31 May 2016 21:21
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

^Optimization is a big thing and requires a lot of work. They would have run quite a few simulations. One thing is it is not just about optimization wrt payload etc but also costs for eg full composite casing would be more efficient but the cost of this would be very high offsetting the advantage.
by member_28108
31 May 2016 19:57
Forum: Military Issues & History Forum
Topic: India's R&D in Defence DRDO, PSUs and Private Sector
Replies: 3507
Views: 402603

Re: India's R&D in Defence DRDO, PSUs and Private Sector

https://vine.co/v/iVTEWxZUzgb

India's HAL HTT-40 basic trainer took its first flight today.
by member_28108
29 May 2016 08:05
Forum: Technology & Economic Forum
Topic: Indian Education System
Replies: 3724
Views: 206542

Re: Indian Education System

If GMC (Grant Medical College) ahs deteriorated to that level it is astounding. That was not the case in the 80's and 90's. I agree in JJ and KEM we did a lot of unnecessary work but then we had to do everything - centrallines trache's . intunations etc etc. I think it is all about attitude. Kust la...
by member_28108
27 May 2016 21:21
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Another important thing is that the DOS/ISRO secretary isthe chief of ISRO himself and not some governmental babu. Sathish Dhawan was very insistent on this with Indira Gandhi. In fact she did not allow anyone to interfere. She realized the deficiencies they faced in previous wars and understood the...
by member_28108
25 May 2016 06:41
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

The virtual runway was 5 meters above the sea as per reports.
by member_28108
23 May 2016 23:01
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

^^ Not necessarily. In fact there have been designs with the orbiter sitting on the booster.
by member_28108
23 May 2016 21:50
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Actually they will NOT place it on the side - the initial plan for the space shuttle was also for it to be on top of the booster. The placement piggyback gave rise tothe foam strike phenomenon and other issues(including the difficulty to escape in an emergency). It was considered a flawed design eve...
by member_28108
23 May 2016 20:52
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

From ISRO's website Today, May 23, 2016 ISRO successfully flight tested India’s first winged body aerospace vehicle operating in hypersonic flight regime. In this experimental mission, the HS9 solid rocket booster carrying RLV-TD lifted off from the First Launch Pad at Satish Dhawan Space Centre, Sr...
by member_28108
23 May 2016 19:57
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

This is the first launch pad. Look at the base for the original bigger rocket launches on which the solid rocket motor has been made to sit.
by member_28108
23 May 2016 13:24
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

In fact full validation of the tiles at peak reentry was done with SRE1 rather than CARE which was an atmospheric test. SRE1 entered from above the Karmann line and splashed down facing the full brunt of reentry.
by member_28108
23 May 2016 13:11
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

There are different methods of analysis of the thermal insulation on reentry. The most important thing is the temperature within the capsule or plane so that is what needs to be analyzed. We already have the tile wear data with SRE1 and CARE. Also the heat shield is ablative so certain portions are ...
by member_28108
23 May 2016 06:44
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

The video released is only of the ascent phase. The launch is not being shown.
by member_28108
23 May 2016 06:43
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Seeing the secrecy and limited coverage there seems to be a lot of technology that they did not want to show !!
by member_28108
23 May 2016 06:42
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

News channels say mission accomplished.
by member_28108
22 May 2016 21:58
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Image

DATA BASED ON 2005 PAPER
by member_28108
22 May 2016 21:24
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Air data sensing system that uses flush pressure orifices embedded in the body. Pitot tubes are not suitable for hypersonic flight where the heat generated can destroy them. NEURAL NETWORK BASED FLUSH AIR DATA SYSTEM (FADS) FOR REUSABLE LAUNCH VEHICLES Abstract Flush air data systems (FADS) are gain...
by member_28108
22 May 2016 21:22
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

You can see another unfurlable antenna behind.
by member_28108
22 May 2016 21:20
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

The polished up RLVTD

Image
by member_28108
22 May 2016 21:18
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

NOTAM A1095/16 - EXPERIMENTAL MISSION LAUNCH ON THE REUSABLE LAUNCH VECHICLE TECHNOLOGY DEMONSTRATOR(RLV TD) FM SHAR RANGE SRIHARIKOTA WILL TAKE PLACE AS PER FLW DETAILS. LAUNCH PAD COORD 1343.9N 08014.2E NO FLT PERMITTED OVER THE DNG ZONE A)DNG ZONE 1 IS A CIRCLE OF 10NM AROUND THE LAUNCHER B)DNG Z...
by member_28108
22 May 2016 17:07
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

Would not be surprised if all of these things can be transferred to the DRDO AURA and HSTDV projects as and when they materialize.
by member_28108
22 May 2016 16:34
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

ANI ‏@ANI_news 1h1 hour ago
Preparations are completed, we are ready for the activity tomorrow morning: ISRO Chairman Kiran Kumar on RLV launch
by member_28108
22 May 2016 12:31
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

http://www.ndtv.com/video/shows/ndtv-special-ndtv-24x7/top-scientist-explains-the-swadeshi-space-shuttle-launch-likely-on-monday-416767 Dr Sivan expl;ains why the RLVTD is not going to be recovered. The goal in this experiment is to reach Mach 5 so with the undercarriage etc this cannot be done and...
by member_28108
22 May 2016 10:58
Forum: Trash Can Archive
Topic: Indian Space Programme Discussion
Replies: 3934
Views: 204405

Re: Indian Space Programme Discussion

In effect this is a glorified 95 crore experiment :-D


It is an actual experiment !! Thats what even its name says.

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