Scramjet (supersonic combusting ramjet) is a variant of a ramjet air breathing jet engine in which combustion takes place in supersonic airflow. As in ramjets, a scramjet relies on high vehicle speed to forcefully compress the incoming air before combustion (hence ramjet), but a ramjet decelerates the air to subsonic velocities before combustion, while airflow in a scramjet is supersonic throughout the entire engine. This allows the scramjet to operate efficiently at extremely high speeds.
SRIHARIKOTA, August 28, 2016
ISRO successfully test-fires scramjet engine
The test-flight of the indigenously-developed supersonic combustion ramjet engine took place from the Satish Dhawan Space Centre in Sriharikota at 6 a.m.
The Advanced Technology Vehicle (ATV), a sounding rocket (research rocket) with a solid booster carrying advanced scramjet engines, was successfully flight-tested from the launch pad of the Sathish Dhawan Space Centre, also known as Sriharikota Range (SHAR), at Sriharikota on Sunday.
This first experimental mission of Indian Space Research Organisation is aimed at the realisation of an Air Breathing Propulsion System which uses hydrogen as fuel and oxygen from the atmosphere air as the oxidiser.
The mission had a smooth countdown of 12 hours as the ATV with scramjet engines weighing 3277 kg lifted off at 6 a.m. ISRO chairman A.S. Kiran Kumar and SHAR director P. Kunhikrishnan along with a host of space scientists were present at Sriharikota on the occasion.
The ATV vehicle, which touched down in the Bay of Bengal approximately 320 km from Sriharikota after a flight of 300 seconds, was successfully tracked during its flight from the ground stations at Sriharikota. With this, the ISRO had successfully demonstrated its capabilities in critical technologies like ignition of air breathing engines at supersonic speed, air intake mechanism and fuel injection systems.
Technological challenges handled by ISRO scientists during the development of the scramjet engine include the design and development of hypersonic engine air intake, the supersonic combustor, proper thermal management and ground testing of the engines.
With this, India became the fourth country to demonstrate the flight testing of a scramjet engines. This mission is a milestone for ISRO’s future space transportation system.
The scientists said that all the important flight events such as the burn out of booster rocket stage and functioning of scramjet engines for 5 seconds followed by burn out of the second stage took place exactly as planned.
(ISRO's ATV rocket lifts off with two scramjet engines from the Satish Dhawan Space Centre in Sriharikota on Sunday. Photo: ISRO)
http://www.thehindu.com/news/national/isro-successfully-testfires-scramjet-rocket-engine/article9042486.ece
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SRIHARIKOTA, August 28, 2016
ISRO successfully test-fires scramjet engine
-
ISRO's Advanced Technology Vehicle carrying scramjet engines lifts off from the Satish Dhawan Space Centre in Sriharikota on Sunday. Photo: ISRO -
ISRO's Advanced Technology Vehicle carrying scramjet engines lifts off from the Satish Dhawan Space Centre in Sriharikota on Sunday. Photo: ISRO -
The Hindu
While conventional rocket engines need to carry both fuel and oxidiser on board for combustion to produce thrust, scramjet engines obtain oxygen from the atmosphere by compressing the incoming air before combustion at hypersonic speed.
The test-flight of the indigenously-developed supersonic combustion ramjet engine took place from the Satish Dhawan Space Centre in Sriharikota at 6 a.m.
The Advanced Technology Vehicle (ATV), a sounding rocket (research rocket) with a solid booster carrying advanced scramjet engines, was successfully flight-tested from the launch pad of the Sathish Dhawan Space Centre, also known as Sriharikota Range (SHAR), at Sriharikota on Sunday.
This first experimental mission of Indian Space Research Organisation is aimed at the realisation of an Air Breathing Propulsion System which uses hydrogen as fuel and oxygen from the atmosphere air as the oxidiser.
The mission had a smooth countdown of 12 hours as the ATV with scramjet engines weighing 3277 kg lifted off at 6 a.m. ISRO chairman A.S. Kiran Kumar and SHAR director P. Kunhikrishnan along with a host of space scientists were present at Sriharikota on the occasion.
The ATV vehicle, which touched down in the Bay of Bengal approximately 320 km from Sriharikota after a flight of 300 seconds, was successfully tracked during its flight from the ground stations at Sriharikota. With this, the ISRO had successfully demonstrated its capabilities in critical technologies like ignition of air breathing engines at supersonic speed, air intake mechanism and fuel injection systems.
Technological challenges handled by ISRO scientists during the development of the scramjet engine include the design and development of hypersonic engine air intake, the supersonic combustor, proper thermal management and ground testing of the engines.
With this, India became the fourth country to demonstrate the flight testing of a scramjet engines. This mission is a milestone for ISRO’s future space transportation system.
The scientists said that all the important flight events such as the burn out of booster rocket stage and functioning of scramjet engines for 5 seconds followed by burn out of the second stage took place exactly as planned.
(ISRO's ATV rocket lifts off with two scramjet engines from the Satish Dhawan Space Centre in Sriharikota on Sunday. Photo: ISRO)
http://www.thehindu.com/news/national/isro-successfully-testfires-scramjet-rocket-engine/article9042486.ece
Wiki
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