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Polar Satellite Launch Vehicle – C39 was the forty-first flight of the
PSLV-C39 was supposed to launch the IRNSS-1H, the eighth satellite of the Indian Regional Navigation Satellite System (IRNSS). The launch was necessitated due to the failure of all the Cesium atomic clocks in one of the satellites of the constellation which rendered the navigation system non-operational. The rocket successfully lifted off from the launch pad and performed as expected for about 3 minutes, when the heat shield protecting the satellite during its ascent through the atmosphere was supposed to separate. Due to a malfunction of the pyro devices designed to explosively separate the heat shield, the satellite remained within the heat shield. The satellite stuck within the heat shield with a combined weight of around was expected to re-enter and burn up in the earth's atmosphere in 40 – 60 days
PSLV : Official ISRO Page
{{PSLV Polar Satellite Launch Vehicle Spacecraft launched by India in 2017 August 2017 events in India Satellite launch failures
PSLV
The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellite ...
series of launch vehicles on 31 August 2017. Launched in its XL configuration, the vehicle suffered a rare failure – the first failure after 24 years of operations when the heat shield
In thermodynamics, heat is defined as the form of energy crossing the boundary of a thermodynamic system by virtue of a temperature difference across the boundary. A thermodynamic system does not ''contain'' heat. Nevertheless, the term is al ...
failed to separate and the payload became trapped inside the heat shield and could not be deployed.
The mission
PSLV-C39 was supposed to launch the IRNSS-1H, the eighth satellite of the Indian Regional Navigation Satellite System (IRNSS). The launch was necessitated due to the failure of all the Cesium atomic clocks in one of the satellites of the constellation which rendered the navigation system non-operational. The rocket successfully lifted off from the launch pad and performed as expected for about 3 minutes, when the heat shield protecting the satellite during its ascent through the atmosphere was supposed to separate. Due to a malfunction of the pyro devices designed to explosively separate the heat shield, the satellite remained within the heat shield. The satellite stuck within the heat shield with a combined weight of around was expected to re-enter and burn up in the earth's atmosphere in 40 – 60 days
References
External links
PSLV : Official ISRO Page
{{PSLV Polar Satellite Launch Vehicle Spacecraft launched by India in 2017 August 2017 events in India Satellite launch failures