India’s Polar Satellite Launch Vehicle flies in new configuration – Spaceflight Now
An Indian Polar Satellite Launch Vehicle lifted off Jan. 24 in a new, intermediate configuration with two strap-on solid rocket boosters, providing a lift capability between the PSLV’s previous variants with zero or six side-mounted rocket motors.
The 145-foot-tall (44-meter) rocket took off from India’s spaceport on Sriharikota Island, located on the country’s southeastern coast, at 1807 GMT (1:07 p.m. EST) on Jan. 24. Liftoff occurred at 11:37 p.m. local time in India to mark the country’s first space launch of 2019.
The new PSLV configuration which successfully debuted Jan. 24 is designated the PSLV-DL, joining the PSLV-Core Alone and PSLV-XL variants in India’s launcher inventory. Two solid rocket boosters, each packed with around 12.2 metric tons — more than 26,000 pounds — of solid propellants, augmented the thrust from the PSLV’s solid-fueled core stage motor during the first 70 seconds of the flight.
The PSLV-CA and PSLV-XL versions feature zero or six solid rocket boosters, respectively, for lighter and heavier payloads.
The Jan. 24 mission delivered the Indian military’s Microsat-R Earth-imaging satellite to an unusually low orbit around 170 miles (274 kilometers) above Earth, then the PSLV’s fourth stage reignited to raise its altitude. The upper stage hosted a small student-built experiment on-board in a demonstration for future flights, which could utilize the PSLV fourth stage as a payload platform after the rocket deploys its satellite into orbit.
Read our full story for details on the mission.
The photos posted below show the PSLV on the First Launch Pad at Sriharikota, followed by liftoff of the rocket, including views of insulation panels falling away from the launcher, as designed.
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