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发帖数: 8422 | 1 印度大气层外拦截没成功，两者之间距离尚待计算
Interceptor spot on, though without blast: DRDO
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The DRDO test-fires the Prithvi Defence Vehicle interceptor missile from the
Wheeler Island, off the Odisha coast, on Sunday.
DRDOThe DRDO test-fires the Prithvi Defence Vehicle interceptor missile from
the Wheeler Island, off the Odisha coast, on Sunday.
TOPICS
defence
missile systems
Scientists say Prithvi Defence Vehicle mission achieved important objectives
India’s ambitious mission on Sunday to intercept an “enemy” ballistic
missile at a altitude of 120 km seems to have achieved only partial success.
While the missile technologists of the Defence Research and Development
Organisation (DRDO) say the interception did take place and the mission met
its “important objectives,” they concede that the warhead in the
interceptor missile, which took off from the Wheeler Island, did not explode.
Avinash Chander, Scientific Adviser to the Defence Minister, said: “The
infrared (IR) seeker in the interceptor could track the target, but we have
not exploded the target. The target was not to be exploded.”
Asked if the mission was only “partially successful,” Mr. Chander,
architect of India’s Agni series of missiles, said, “The mission’s main
objective was to track the target missile. We wanted to see the performance
of the IR seeker. The warhead in the interceptor missile was not meant to be
exploded in this mission. Since we did not fire the warhead, the debris did
not fall.”
Another DRDO missile technologist said: “We have recorded the interception.”
Asked whether “a hit-to-kill” took place in the mission as it did in the
previous six other interceptor flights from the Wheeler Island, he said: “
We have to work out the missed distance between the target missile and the
interceptor. Based on that, the hit-to-kill would take place. We are not
able to say right now whether the hit-to-kill took place.”
Yet another scientist said, “Whether the target missile was destroyed or
not, I cannot say right now.”
The DRDO was looking forward to this mission because it was “challenging”
and “complex.” Of the DRDO’s seven interceptor missions, six were
successful. The interceptions had taken place either in the endo-atmosphere
(below 50 km) or in the exo-atmosphere (between 50 km and 80 km). But this
mission was a different ball game because the interception was to be done at
120 km, providing very little time for the interceptor to blast off and
waylay the attacker. So the motors in the interceptor called the Prithvi
Defence Vehicle (PDV) and the target missile were specially developed. The
target missile lifted off a ship in the Bay of Bengal, off Odisha at 9.07 a.
m. It was a two-stage missile, “mimicking a hostile ballistic missile
approaching from more than 2,000 km away,” a DRDO press release said.
In an automated operation, radar-based systems on the Wheeler Island and in
Paradip, Puri and Cuttack detected and tracked the “enemy” missile. The
computer network, with the help of data from the radars, predicted its
trajectory. The single-stage PDV interceptor took off two-and-a-half minutes
later.
The PDV, guided by the highly accurate inertial navigation system and
supported by a redundant micro-navigation system, moved towards the point of
interception. Once the PDV crossed the atmosphere, its heat shield domes
covering the IR and radio frequency (RF) seekers fell off. So the two seeker
domes opened to look at the incoming missile’s location. With the help of
inertial guidance and the IR seeker, the PDV moved for the interception. “
The mission was completed and the interception parameters were achieved,”
the press release said.
G. Satheesh Reddy, Director, Research Centre, Imarat , a DRDO missile
facility in Hyderabad, said the mission featured several new technologies.
Both the missiles had new, powerful motors. The heat shield, covering the IR
and RF seekers, ejected for the first time. The seekers worked well. “This
is the first time that an imaging seeker has been used for the air defence
vehicle. The imaging seeker could see the incoming missile, track it and
guide the interceptor towards the target.” The RCI team made the seekers
and the inertial navigation and guidance system, Mr. Reddy said.
Adalat Ali was the Programme Director and Y. Sreenivasa Rao, Project
Director | l*****i
发帖数: 20533 | 2 就他那个为了省电就关雷达的防御体系，搞这种东西干什么？ |
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