In April 2012, DRDO announced that it is developing an anti-radiation missile on priority to equip Su-30MKI aircraft.
In August 2014, DRDO Chief Avinash Chander confirmed to the press that missile design is in progress and hardware is being readied for the first trials.
"We expect successful trials of this ARM from an aircraft in about the next three years," he very optimistically said.
The missile, earlier known just as NGARM, was first officially referred to as Rudram-1 in a tweet by RM Rajnath Singh on October 9, 2020 while announcing a successful test of the missile on the same day.
NGARM reportedly employs an indigenously developed dual-pulse, solid-propellant rocket motor.
RCI is developing the MMW seeker for the NGARM. The seeker is reportedly a combination of passive and active radar.
The missile uses a an inertial navigation system (INS) that is aided by GPS.
The NGARM would be cued using the DRDO developed Siva HADF (High Accuracy Direction Finder)
Test on October 9, 2020
Test on January 18, 2019
“The missile was tested from a Sukhoi-30MKI on January 18, 2019 at the integrated test range at Balasore. The missile, with all systems functioning properly, hit the designated target with a high degree of accuracy in the Bay of Bengal. The NGARM can be launched from Sukhois from different altitudes and velocities,” said a source.
The test was likely sans a seeker
The missile will have a strike range of 15-100 km from launch altitudes of 100 m to 15 km from Su-30 MKI aircraft.
It will be carried by Su-30MKI on a modified AKU-58 launcher.