Author Topic: SSLV set to launch by 2019  (Read 5551 times)

Offline K210

  • Full Member
  • *
  • Posts: 160
  • Liked: 37
  • Likes Given: 0
SSLV set to launch by 2019
« on: 11/22/2017 08:11 AM »
ISRO has quietly been working on PSLV-3S SSLV over the past few years and revealed recently that it will be ready for launch by 2019. It will be able to carry 500kg - 700kg to LEO and will cost 1/10th the amount of a normal PSLV. Assembly time will be 3 days compared to 30 days for normal PSLV. Total vehicle mass will be 100 tons.

Source: https://timesofindia.indiatimes.com/india/isros-plan-a-rocket-that-can-be-made-in-3-days/articleshow/61746668.cms
« Last Edit: 01/02/2018 03:30 PM by gongora »

Offline Galactic Penguin SST

Re: PSLV 3S set to launch by 2019
« Reply #1 on: 11/22/2017 08:29 AM »
Are you sure that this is the PSLV-3S (core alone variant minus second stage, if I understand correctly)? The CA variant is around 230 t in mass and the second stage is only around 40 t, very far from the 100 t figure quoted.

I also doubt that any rocket with multiple segments solid stages can be prepared in 3 days and somehow shaves 90% of cost magically. ::)
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline K210

  • Full Member
  • *
  • Posts: 160
  • Liked: 37
  • Likes Given: 0
Re: PSLV 3S set to launch by 2019
« Reply #2 on: 11/22/2017 08:46 AM »
Are you sure that this is the PSLV-3S (core alone variant minus second stage, if I understand correctly)? The CA variant is around 230 t in mass and the second stage is only around 40 t, very far from the 100 t figure quoted.

I also doubt that any rocket with multiple segments solid stages can be prepared in 3 days and somehow shaves 90% of cost magically. ::)

The 3S config has probably been updated to use a single segment composite solid fuel motor for the first stage. I suspect they have gone the vega route of using all solids for stage 1 and 2 and using PS4 from pslv for 3rd stage. 

Just like any launch vehicle we wont know the true cost until it flys.

Offline Skyrocket

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 2109
  • Frankfurt am Main, Germany
  • Liked: 289
  • Likes Given: 73
Re: PSLV 3S set to launch by 2019
« Reply #3 on: 11/22/2017 10:21 AM »
Are you sure that this is the PSLV-3S (core alone variant minus second stage, if I understand correctly)? The CA variant is around 230 t in mass and the second stage is only around 40 t, very far from the 100 t figure quoted.

I also doubt that any rocket with multiple segments solid stages can be prepared in 3 days and somehow shaves 90% of cost magically. ::)

I agree - this one is likely not the PSLV-3S. It must be a new development (especially stage 1), with perhaps some heritage on the PSLV

Offline K210

  • Full Member
  • *
  • Posts: 160
  • Liked: 37
  • Likes Given: 0
Re: PSLV 3S set to launch by 2019
« Reply #4 on: 11/23/2017 06:57 AM »
Given the short development time it is possible this might be a modified version of india's agni-v ICBM. It has been hinted in the past that agni-v could one day be used to provide a rapid launch capacity maybe this is it?

Offline sanman

  • Senior Member
  • *****
  • Posts: 4000
  • Liked: 550
  • Likes Given: 7
Re: PSLV 3S set to launch by 2019
« Reply #5 on: 11/23/2017 09:12 AM »
The Agni-V ICBM is supposed to weigh 50 tonnes, whereas the launch vehicle they're talking about is supposed to weigh 100 tonnes. It doesn't sound like they're the same thing. Although you'd think anything that has to be quickly assembled for launch in 3 days would likely be comprised of all solid-fuel elements.
« Last Edit: 11/24/2017 02:19 AM by sanman »

Offline chota

  • Full Member
  • *
  • Posts: 150
  • Liked: 46
  • Likes Given: 10
Re: PSLV 3S set to launch by 2019
« Reply #6 on: 12/11/2017 04:52 PM »
Quote
Preliminary work to design and develop an ambitious small launch vehicle began about three months ago

Quote
And the launcher should be able to put satellites of up to 500-600 kg in orbits close to the Earth

Quote
VSSC has designed the vehicle using the rocket technology that it already has and is awaiting ISRO’s approval

Quote
We are looking at having a demonstration launch in a year, in the 2018-19 time frame,

Quote
The development cost would be kept low at a few crore as the new launcher’s requirement of advanced electronics is considerably lower

Quote
A small launcher that can be got up perhaps in three days by a small team

http://www.thehindu.com/sci-tech/science/isro-developing-a-compact-launcher-for-small-satellites/article21420644.ece
« Last Edit: 12/11/2017 04:55 PM by chota »

Offline chota

  • Full Member
  • *
  • Posts: 150
  • Liked: 46
  • Likes Given: 10
Re: PSLV 3S set to launch by 2019
« Reply #7 on: 12/14/2017 08:48 AM »
Quote
According to Sivan, the preliminary design for the proposed four-stage rocket that would weigh around 100 tonnes is ready and its feasibility study has also been conducted

Quote
Sivan said the first rocket would be ready in two years once the project gets the necessary approvals.

http://www.thenewsminute.com/article/isro-developing-small-rocket-cash-small-satellite-boom-73143
« Last Edit: 12/14/2017 08:49 AM by chota »

Offline worldtimedate

  • Full Member
  • *
  • Posts: 132
  • Liked: 5
  • Likes Given: 0
Re: PSLV 3S set to launch by 2019
« Reply #8 on: 01/02/2018 05:39 AM »
ISRO's baby rocket to carry small satellites, likely to take off in 2019

Quote
The first of Indian Space Research Organisation's (ISRO) 'baby rockets' in the making is likely to take to the skies in the first half of 2019, top officials of ISRO's Vikram Sarabhai Space Centre (VSSC) said. Though a formal approval for the Small Satellite Launch Vehicle (SSLV) project is still awaited, VSSC here at Thumba - ISRO's nodal agency for launch vehicles - has already started work on it, VSSC director K Sivan said.

Quote
On the launchpad, the SSLV will stand half as tall as a regular Polar Satellite Launch Vehicle (PSLV) and weigh in the neighbourhood of 100 tonnes, Sivan said. "A PSLV weighs over 300 tonnes. The SSLV's weight would be around 100 tonnes and its height, 20-25 metres," he said. The PSLV, often dubbed the reliable workhorse of the ISRO, stands 44 metres tall in comparison.

Quote
The SSLV will place small satellites in the Low Earth Orbit "orbits with altitudes up to 2,000 km. "We hope to have the first flight of the SSLV in the first half of 2019. Across the globe, satellites are 'shrinking'. Now, small satellites go aboard the PSLV or GSLV as 'piggyback' payloads alongside bigger ones," Sivan said.

The mission cost will be roughly one-tenth that of a PSLV mission. ISRO is planning to have the SSLV flying fully on solid fuel, but the technicalities have to be worked out, Sivan said. If things go as planned, the SSLV will be ISRO's smallest launch vehicle.

worldtimedate [ http://www.world-timedate.com/ ]

Offline K210

  • Full Member
  • *
  • Posts: 160
  • Liked: 37
  • Likes Given: 0
Re: PSLV 3S set to launch by 2019
« Reply #9 on: 01/02/2018 08:52 AM »
If the all solid fuel claim is true then this will be isro's first all solid slv since ASLV. In the 90's the goal was to go from solid fuel to liquid fuel. Now decades later they are returning to all-solid launch vehicles. The four stage design reminds me of the old SLV rocket they used to fly in the late 70s/early 80s.....

Offline Skyrocket

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 2109
  • Frankfurt am Main, Germany
  • Liked: 289
  • Likes Given: 73
Re: PSLV 3S set to launch by 2019
« Reply #10 on: 01/02/2018 10:11 AM »
Perhaps the title of the thread should be changed to "SSLV set to launch by 2019"

Offline Steven Pietrobon

  • Member
  • Senior Member
  • *****
  • Posts: 14233
  • Adelaide, Australia
    • Steven Pietrobon's Space Archive
  • Liked: 3618
  • Likes Given: 540
Re: SSLV set to launch by 2019
« Reply #11 on: 01/03/2018 05:58 AM »
Perhaps the title of the thread should be changed to "SSLV set to launch by 2019"

The article says first half of 2019. So, are there any Indian ICBMs that are about 100 t? The Agni III and Agni V are only 50 t. Agni VI is 55 to 70 t and is still is in development.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline vineethgk

  • Full Member
  • ****
  • Posts: 741
  • India
  • Liked: 158
  • Likes Given: 258
Re: SSLV set to launch by 2019
« Reply #12 on: 01/06/2018 12:19 PM »
Perhaps the title of the thread should be changed to "SSLV set to launch by 2019"

The article says first half of 2019. So, are there any Indian ICBMs that are about 100 t? The Agni III and Agni V are only 50 t. Agni VI is 55 to 70 t and is still is in development.
The first stage is likely all-new maybe ~70 tonnes or so. They could perhaps use motors from Agni-V for the second stage, but its unlikely as the two projects are under different agencies. There is also a question whether using stages from an in-service ballistic missile for a civilian launch vehicle is acceptable from the perspective of national security. (It has happened the other way round in the past though, with SLV-3's first stage essentially ending up as Agni-TD/Agni-1)

I would take that 2019 target with a pinch of salt. ISRO might be habitually quoting a rather optimistic schedule as usual. Perhaps 2020 or later is more likely.

The claim of one-tenth cost could be a bit exaggerated too, in my view. Perhaps that's what they are ultimately targeting for via mass production involving private firms.
« Last Edit: 01/06/2018 12:27 PM by vineethgk »

Offline vineethgk

  • Full Member
  • ****
  • Posts: 741
  • India
  • Liked: 158
  • Likes Given: 258
Re: SSLV set to launch by 2019
« Reply #13 on: 02/05/2018 01:25 AM »
SSLV operations to be entrusted to the private industry after development flights
Quote
"Beyond  these, we are developing a new launch vehicle to put small satellites to space.

We want to hand over its technology and production to industry right from the beginning after doing one or two technology demonstration flights. We will do this through [ISRO's business entity] Antrix Corporation."

Offline sanman

  • Senior Member
  • *****
  • Posts: 4000
  • Liked: 550
  • Likes Given: 7
Re: SSLV set to launch by 2019
« Reply #14 on: 02/13/2018 09:01 AM »
...will be ready for launch by 2019. It will be able to carry 500kg - 700kg to LEO and will cost 1/10th the amount of a normal PSLV...

So what kind of launch price is that likely to translate into?
~$2million maybe?

Gee, a Tata Nano only weighs ~600kg  ;)
If corporate sponsors could pay to cover the car with their logos, that might be enough to cover the costs.

But I wonder what the fairing width would be?

Offline Galactic Penguin SST

Re: SSLV set to launch by 2019
« Reply #15 on: 02/16/2018 10:27 AM »
Looks like we have the first info of the composition of this new launcher:

https://twitter.com/orfonline/status/964400636279205888

Can someone who is well versed with Indian missiles and rockets comment if existing solid rocket motors may have been used here?
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Online Kryten

  • Full Member
  • ****
  • Posts: 515
  • Liked: 235
  • Likes Given: 26
Re: SSLV set to launch by 2019
« Reply #16 on: 02/16/2018 10:43 AM »
Can someone who is well versed with Indian missiles and rockets comment if existing solid rocket motors may have been used here?
2m diameter matches the Agni-3/5 series; but none of the motor lengths match, as far as I can tell.

Offline Kosmos2001

  • Full Member
  • *
  • Posts: 147
  • CAT
  • Liked: 47
  • Likes Given: 104
Re: SSLV set to launch by 2019
« Reply #17 on: 02/16/2018 11:56 AM »
That's a large "1st stage" vs "rest of the stages" ratio. If the number after the letter S means the mass.

Offline vineethgk

  • Full Member
  • ****
  • Posts: 741
  • India
  • Liked: 158
  • Likes Given: 258
Re: SSLV set to launch by 2019
« Reply #18 on: 02/16/2018 12:29 PM »
Can someone who is well versed with Indian missiles and rockets comment if existing solid rocket motors may have been used here?
2m diameter matches the Agni-3/5 series; but none of the motor lengths match, as far as I can tell.
The S7 mentioned as second stage appear to match PS3 of the PSLV where the motor itself has 2m dia.
« Last Edit: 02/16/2018 12:31 PM by vineethgk »

Offline K210

  • Full Member
  • *
  • Posts: 160
  • Liked: 37
  • Likes Given: 0
Re: SSLV set to launch by 2019
« Reply #19 on: 02/16/2018 12:30 PM »
Looks like we have the first info of the composition of this new launcher:

https://twitter.com/orfonline/status/964400636279205888

Can someone who is well versed with Indian missiles and rockets comment if existing solid rocket motors may have been used here?

The S85 looks like it is composed of various motor segments from the S139 which forms the first stage of PSLV and GSLV MK-2. The S-7 is the third stage of PSLV. S-4 seems to be a new motor. The optional fourth stage is the PS4 from PSLV.

It looks like a very cost effective launch vehicle. I would put the cost at less then $5 million per launch. 

Tags: