vasu_ray wrote:Couple of years back, DRDO complained that the US refused import of materials needed for the scram jet engine forcing it as usual to the local development route
They also said that they achieved a 20s scram jet performance, and were planning to repeat it for another 20s as well as establishing high mach wind tunnels for such purposes, five or six more tests and they will be ready for flight testing
Now with the Shaurya sustaining hypersonic speeds even at lower altitudes, did they develop the needed materials or the intakes and internals of the scram jet engine experience even higher temperatures than a aerodynamic and rolling missile body like Shaurya?
they could attach the scram jet engine to the Shaurya and flight test it without ever releasing it from the missile body and collect it by a parachute at the end of a flight, (the US has lost so many prototypes flying them alone) once they achieve stable flights they can have the scram jet fly on its own
Requirements of Shourya and Avatar like *reusable* hypersonic space vehicle varies. Anyway, a lot of things are happening quite fast to pinpoint. To illustrate, lets see this. viewtopic.php?p=1177886#p1177886
On Agni-3 3rd test held in 2008:
A special system, called ring-laser gyro-based inertial navigation system, was flown on board for higher accuracy of the flight. The circular error probable was in single digit, indicating the high accuracy of the system, Mr. Chander said.
On Agni-3 4th test held in 2010:
An elated V.K. Saraswat, Scientific Adviser to the Defence Minister, called it “a fantastic launch and a hat-trick.”
“The flight gave us the full range and pin-point accuracy. The missile travelled accurately its entire range to its last decimal place as we had planned. ”
If you observe, 4th test flight is described as one achieving pinpoint accuracy whereas such terms was not used for the 3rd test even though it reached its target in copybook manner.
DRDO press release of 3rd Agni test says, "It was a text book launch and followed the trajectory with single digit guidance accuracy. All the subsystems of the missile functioned in a copybook manner
giving an outstanding integrated performance of the missile in terms of range and accuracy". For the first time Ring Laser Gyro was used in the 3rd test flight. And Shourya too tested in that year used RLG.
But the DRDO Press Release for 4th test says, The missile is equipped with a state of the art computer system, navigated with a most advanced Navigation system and guided with an innovative guidance scheme. The Navigation system used for guidance is first of its kind
If it is the same Navigation system as used in Agni 3rd test, can the use of such system in the 4th test be described as "first of its kind"? While the press release of 3rd flight contains details of the system used, 4th one is silent about the system used. To appreciate the fact, Trident D5 got upgraded from electro mechanical gyros to Ring Laser gyros only from 2002( 01? ) onwards.
So there is lot of things happening and drawing conclusion without any official word/data is as good as goose chase.
Agni V test depends on prime successhttp://ibnlive.in.com/news/agni-v-test- ... 0-117.html
BALASORE: The failed mission of December 2010 in mind, scientists pin much hope on the success of test-flight of Agni-II Prime, expected to be conducted on November 10. A smooth test would mean first trial of India’s most powerful and longest range Agni-V missile, scheduled in December.
The Defence Research Development Organisation (DRDO) is planning to test-fire the surface-to-surface nuclear-capable Agni-II Prime from the Wheelers Island near Dhamra. Spade-work for the indigenously built intermediate range ballistic missile has started. The project team from Hyderabad will arrive on October 28 to oversee the final preparations. Usually, a missile is tested after the mission team gets the nod from the Launch Authorisation Board (LAB) of the DRDO and the Cabinet Committee on Security (CCS). An official said if the scientists get green signal from the board and the CCS as per the programme, the missile will definitely blast off on the scheduled date.
“Agni-V, capable of hitting targets at a distance of 5,000 km, would derive most of its sub-systems from Agni-II Prime though they would need sufficient scaling. Besides, there is a plan to develop Agni-IV as an intermediate step between Agni-III and Agni-V,” said a defence scientist. The maiden test of Agni-II Prime was a failure with the missile deviating from the trajectory soon after takeoff. Instead of attaining the desired altitude, the missile plunged down just after a flight of 30 seconds as no stage separation occurred midway.
Sources said this project was handled by a bunch of young scientists and this time they will leave no stone unturned to make the mission a success. Or else, it will be difficult for the DRDO to get the green signal for Agni-V.
If I have to test something new, I will test it first in already tried and tested missile like Agni-II before testing that in new & complex missile like Agni-II Prime. With two tests and enough time to validate and fine tune the new system, I can confidently go ahead with the testing of prestigious and ultimate Agni-V missile.
So what are these sub systems that are not in Agni-3 that needs to be tested in Agni-2P before testing that in Agni-V ?
It is already reported( a year back?) that work has begun on new missile which is/was identified by the name Agni-3A.