This affected its velocity. In this case, the command for separation reached the heat shield’s mechanisms but it did not trigger the mechanical process to release the satellite.In effect, the heat shield began to weigh down the launch from the the 114th second. “I cannot accurately say by how much it missed the desired altitude. “There has been a snag that resulted in the heat shield not separating... what exactly caused that needs to be found out. A team of experts has begun the examination,” he said.

Source: Economic Times September 01, 2017 23:22 UTC