US Space Agency NASA and the Indian Space Research
Organisation (ISRO) are reviewing potential dates for the launch of INDO-US joint
NISAR Satellite Mission.
The satellite, to be placed in a Low Earth Orbit, has been tested at ISRO facility in
Bengaluru and will be transported to the spaceport of Sriharikota, about 110 km from
here.
The launch is likely either in May or June depending upon the launch window availability
after undergoing further tests of satellite at the SHAR Range.
In an update, NASA in its website said Work on the NISAR satellite has been completed
at the ISRO Satellite Integration and Testing Establishment in Bengaluru, and preparations
are underway to transport it to the launch site at the agency’s Satish Dhawan Space Centre
in Sriharikota on India’s southeastern coast.
NASA and ISRO now are reviewing potential launch dates for the NISAR (NASA-ISRO
Synthetic Aperture Radar) mission.
Launch services are provided by ISRO, using the Geosynchronous Launch Vehicle Mark-II
rocket that will carry the spacecraft into a Low Earth Orbit.
The launch readiness date for the mission will be determined by the two agencies in the
coming weeks, NASA said. .
In fact, the Satellite was already shifted to Sriharikota from Bengaluru for the launch but
has been taken back due to some technical glitch in reflector antenna, which is a crucial
part of NISAR’s radar system. .
“The NISAR satellite, a joint venture between NASA and ISRO, was indeed taken back
from Sriharikota for further testing, specifically for the reflector antenna, which is a crucial
component of the NISAR’s radar system”.
It experienced an issue that required a thermal coating to be applied, leading to its return
to the US for rectification.
This delay has pushed the launch date of NISAR to later in the year.
The issue pertained to the NISAR satellite is the reflector antenna, which is 12 meters in
diameter, was found to have a potential overheating problem during flight.
“To address this, the reflector antenna was returned to the US for a special thermal coating
to prevent overheating. After the coating was applied, the antenna was returned to India for
reintegration with the NISAR satellite and further testing”, NASA said.
