Author Topic: ATV-D02, SPEX (Suborbital), Aug 28 2016  (Read 9956 times)

Offline vyoma

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ATV-D02, SPEX (Suborbital), Aug 28 2016
« on: 08/16/2016 07:24 PM »
ISRO to test its air-breathing scramjet engine by the end of August 2016. Scramjet engine will be mounted on a modified 'Rohini' sounding rocket called Advanced Technology Vehicle (ATV).

ATV serves as a platform for testing experimental/advanced engines for ISRO. ATV-D01 was launched in March 2010 to test hypersonic (Mach 6) flight characters of a passive scramjet engine.

ATV-D02 will carry an active scramjet engine.

http://www.deccanchronicle.com/science/science/160816/new-gslv-launch-in-september.html

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Director of Satish Dhawan Space Centre, Shar, P. Kunhi Krishnan, said this during the Independence Day celebrations at Shar in Sriharikota on Monday. According to Mr Krishnan, preparations are on to test the indigenously developed scramjet engine technology based on air-breathing propulsion before the end of August. The test will be on the platform named Advanced Technology Vehicle (ATV) from the Shar.
« Last Edit: 08/25/2016 11:28 AM by input~2 »

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 2016
« Reply #1 on: 08/16/2016 07:26 PM »
Other discussion threads about scramjet, HEX, REX, LEX, SPEX:
Indian Reusable Launch Vehicle Program: https://forum.nasaspaceflight.com/index.php?topic=25695.0
ISRO Air Breathing Propulsion developments: https://forum.nasaspaceflight.com/index.php?topic=34234.0
RLV-TD HEX-01 (Suborbital), May 23, 2016: https://forum.nasaspaceflight.com/index.php?topic=35783.0
ISRO & Reusability: Wings vs VTVL: https://forum.nasaspaceflight.com/index.php?topic=40313.0
ISRO Design for Reusable Launch Vehicle Approved: https://forum.nasaspaceflight.com/index.php?topic=27701.0
« Last Edit: 08/16/2016 07:49 PM by vyoma »

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 2016
« Reply #2 on: 08/16/2016 07:27 PM »
Re-posting image from here.

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 2016
« Reply #3 on: 08/16/2016 07:31 PM »
ATV-D01 with passive scramjet engine mounted on it.

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 2016
« Reply #4 on: 08/16/2016 07:45 PM »
http://www.thehansindia.com/posts/index/Hans-Classroom/2016-07-22/Scramjet-Engine/243771

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Supersonic Combustion Ramjet (Scramjet) programmes refer to research and testing programs for the development of supersonic combustion ramjets, known as scramjets.  The testing of sub-scale demonstrator scramjet engine is envisaged by ISRO as a part of technology demonstration, by mounting it on a two stage solid rocket.

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This test intends to demonstrate supersonic combustion in flight and evaluate the integrated functioning of the engine. The preparations for carrying out the test are underway and the test is likely to be conducted in the third quarter of 2016.

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It has been ground-tested at hypersonic speeds for 20 seconds. Only the USA recently carried out in-flight demonstration of supersonic combustion for a short duration.

ATV platform is capable of achieving Mach 6+; and scramjet will be ignited at this hypersonic phase to evaluate its characteristics.

Offline sanman

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Re: ATV-D02, SPEX (Suborbital), end Aug 2016
« Reply #5 on: 08/24/2016 09:52 PM »
Air-breather propulsion test on Aug. 28: ISRO

http://www.thehindu.com/sci-tech/airbreather-propulsion-test-on-aug-28-isro/article9027578.ece

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The Indian Space Research Organisation (ISRO) is set to conduct air-breathing propulsion experiment using its RH-560 rocket fitted with a supersonic combustion ramjet (Scramjet) engine on August 28 from Sriharikota.


Btw, I'm not sure if the thread title is accurate, because I thought the Scramjet Propulsion Experiment (SPEX) is supposed to involve the RLV-TD. Anyway, we'll have to see how things play out.

Offline russianhalo117

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Re: ATV-D02, SPEX (Suborbital), end Aug 2016
« Reply #6 on: 08/24/2016 09:57 PM »
Air-breather propulsion test on Aug. 28: ISRO

http://www.thehindu.com/sci-tech/airbreather-propulsion-test-on-aug-28-isro/article9027578.ece

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The Indian Space Research Organisation (ISRO) is set to conduct air-breathing propulsion experiment using its RH-560 rocket fitted with a supersonic combustion ramjet (Scramjet) engine on August 28 from Sriharikota.


Btw, I'm not sure if the thread title is accurate, because I thought the Scramjet Propulsion Experiment (SPEX) is supposed to involve the RLV-TD. Anyway, we'll have to see how things play out.
RLV-TD is the follow-on series and will initially run in parallel.

Offline sanman

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Re: ATV-D02, SPEX (Suborbital), end Aug 2016
« Reply #7 on: 08/24/2016 10:35 PM »
RLV-TD is the follow-on series and will initially run in parallel.

Yeah, that's what I thought - but I also thought that "SPEX" is the name specifically designated for the RLV-TD Scramjet Propulsion Experiment.

The experiment being referred to in this thread (and in the article link I just posted) would be ATV-D02, the 2nd developmental flight of the Dual-Mode Ramjet (DMRJ) engine. So this does not directly involve the RLV-TD, although it will help to develop the DMRJ that will later be fitted onto the RLV-TD. At least that's my understanding.

Offline russianhalo117

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Re: ATV-D02, SPEX (Suborbital), end Aug 2016
« Reply #8 on: 08/24/2016 11:56 PM »
RLV-TD is the follow-on series and will initially run in parallel.

Yeah, that's what I thought - but I also thought that "SPEX" is the name specifically designated for the RLV-TD Scramjet Propulsion Experiment.

The experiment being referred to in this thread (and in the article link I just posted) would be ATV-D02, the 2nd developmental flight of the Dual-Mode Ramjet (DMRJ) engine. So this does not directly involve the RLV-TD, although it will help to develop the DMRJ that will later be fitted onto the RLV-TD. At least that's my understanding.
SPEX was listed on both on a ISRO press release. Other than that, that is all I know.

Offline sanman

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Offline sanman

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #10 on: 08/27/2016 12:35 PM »
http://www.ndtv.com/india-news/isro-to-test-scramjet-engine-on-sunday-1451043

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"The launch of RH-560 sounding rocket to test the scramjet (air breathing) engine is slated for 6 am on Sunday," P Kunhi Krishnan, director of SDSC told IANS.

The rocket will take off at 6 am if the wind speed is conducive for the launch or it may be launched bit later.

I wonder if it will be televised, like the RLV-TD launch was.
« Last Edit: 08/27/2016 12:36 PM by sanman »

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #11 on: 08/27/2016 07:52 PM »
http://www.dailyexcelsior.com/isro-all-set-to-test-flight-its-indigenously-developed-scramjet-engine-today/

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In its quest to build its first Resuable Launch Vehicle (RLV) and to bring down the launch cost significantly, the Indian Space Research  Organisation (ISRO) is all set to conduct the air-breathing propulsion experiment  using its RH-560 rocket fitted with a supersonic combustion ramjet (Scramjet)  engine from the spaceport of Sriharikota, tomorrow.

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During the test, the engine would be fitted on a two-stage RH-560 sounding  rocket and launched to an altitude of about 70 km using conventional engines.

There, the first stage will break off and fall into the Bay of Bengal. The second stage will coast horizontally for a bit, travelling at over  six-times the speed of sound. This is when the scramjet engine will fire  for five seconds.

RH-560 signifies two things–RH means its a Rohini-class sounding rocket  and 560 is its diameter in millimetres. Its modified second stage, to which  the scramjet engine was being affixed, was called the Advanced Technology  Vehicle (ATV). According to ISRO, it is a scaled-down prototype of the RLV that will  eventually fly on missions about 14 years from now.   (PTI)


Offline sanjaykumar

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #13 on: 08/28/2016 02:59 AM »
« Last Edit: 08/28/2016 03:02 AM by sanjaykumar »

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #14 on: 08/28/2016 03:07 AM »
Looks like two scramjet engines were test-fired.


http://www.newindianexpress.com/nation/ISRO-successfully-tests-two-scramjet-engines/2016/08/28/article3601090.ece

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"The mission was successful. Two scramjet engines were tested during the flight. The finer details about the test will be known later," the official not wanting to be quoted told IANS.

He said that as scheduled the two stage/engine RH-560 sounding rocket took off from the rocket port located at Satish Dhawan Space Centre (SDSC) in Sriharikota in Andhra Pradesh.

He said the two air breathing engines were like hugging the rocket on its sides and normally when the rocket reaches a height of 11 km the scramjet engines would start breathing air.

"The scramjet engines were ignited 55 seconds into the rocket's flight. The engines were tested for six seconds," he added.
« Last Edit: 08/28/2016 04:24 AM by vyoma »

Offline sanman

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #15 on: 08/28/2016 04:13 AM »
This is an old pic from 2010 showing roughly what the thing is supposed to look like:




Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #16 on: 08/28/2016 04:23 AM »
https://twitter.com/ANI_news/status/769715042669432832

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India test launched Scramjet engine from Satish Dhawan Space Center, Sriharikota at 6 AM.

Offline sanman

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #17 on: 08/28/2016 04:27 AM »



Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #18 on: 08/28/2016 06:30 AM »
http://www.isro.gov.in/update/28-aug-2016/successful-flight-testing-of-isros-scramjet-engine-technology-demonstrator

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Successful Flight Testing of ISRO's Scramjet Engine Technology Demonstrator

The first experimental mission of ISRO’s Scramjet Engine towards the realisation of an Air Breathing Propulsion System was successfully conducted today (August 28, 2016) from Satish Dhawan Space Centre SHAR, Sriharikota.

After a smooth countdown of 12 hours, the solid rocket booster carrying the Scramjet Engines, lifted off at 0600 hrs (6:00 am) IST.  The important flight events, namely, burn out of booster rocket stage, ignition of second stage solid rocket, functioning of Scramjet engines for 5 seconds followed by burn out of the second stage took place exactly as planned.

After a flight of about 300 seconds, the vehicle touched down in the Bay of Bengal, approximately 320 km from Sriharikota. The vehicle was successfully tracked during its flight from the ground stations at Sriharikota.

With this flight, critical technologies such as ignition of air breathing engines at supersonic speed, holding the flame at supersonic speed, air intake mechanism and fuel injection systems have been successfully demonstrated.

The Scramjet engine designed by ISRO uses Hydrogen as fuel and the Oxygen from the atmospheric air as the oxidiser. Today’s test was the maiden short duration experimental test of ISRO’s Scramjet engine with a hypersonic flight at Mach 6. ISRO’s Advanced Technology Vehicle (ATV), which is an advanced sounding rocket, was the solid rocket booster used for today’s test of Scramjet engines at supersonic conditions.  ATV carrying Scramjet engines weighed 3277 kg at lift-off.

ATV is a two stage spin stabilised launcher with identical solid motors (based on Rohini RH560 sounding rocket) as the first as well as the second stage (booster and sustainer). The twin Scramjet engines were mounted on the back of the second stage. Once the second stage reached the desired conditions for engine “Start-up”, necessary actions were initiated to ignite the Scramjet engines and they functioned for about 5 seconds. Today’s ATV flight operations were based on a pre-programmed sequence.

Some of the technological challenges handled by ISRO during the development of Scramjet engine include the design and development of Hypersonic engine air intake, the supersonic combustor, development of materials withstanding very high temperatures, computational tools to simulate hypersonic flow, ensuring performance and operability of the engine across a wide range of flight speeds, proper thermal management and ground testing of the engines.

India is the fourth country to demonstrate the flight testing of Scramjet Engine. The successful technology demonstration of air-breathing Scramjet engines in flight by ISRO today is a modest yet important milestone in its endeavour to design and develop advanced air breathing engines including engines for ISRO’s future space transportation system.

Offline vyoma

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Re: ATV-D02, SPEX (Suborbital), Aug 28 2016
« Reply #19 on: 08/28/2016 06:32 AM »
ATV-D02 liftoff pictures.
« Last Edit: 08/28/2016 06:32 AM by vyoma »

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