DRDO Anti Tank Missile The DRDO Anti - tank missile ( ATM ) is a first generation wire - guided missile developed in India by Defense Research & Development Laboratory ( DRDL ) of Defence Research and Development Organisation ( DRDO ) . It has a subsonic speed up to with a range of 1 . 6 km and carries a 106 mm HEAT warhead . Introduction . In 1959 , India started a feasibility study on a First Generation Anti Tank Missile ( ATM ) . New General Staff Qualitative Requirements ( GSQR ) were issued and the task of preliminary study and wind testing was assigned to Department of Aeronautics and Institute of Science , Bangalore . Development . In 1962 , DRDO was granted 600 , 000 Indian Rupees to begin work on developing an Anti - Tank missile due to conflict with China in Ladakh . It has a range of 500 meters to about 4 km . After the first aerodynamic design was completed , a full scale model of the complete configuration was tested in a wind tunnel at IISc Bangalore . At Banglore , this model was tested for the force and momentum tests which were completed in 1961 . Vibrating spoilers were used during these tests to determine control effectiveness . The ATM was designed to have a subsonic flight speed of about 300 ft / s ( 90 m / s ) . In 1963 , the entire design was reworked for accommodating 106 mm HEAT warheads in the ATM . Propulsion . Defense Research and Development Laboratory ( DRDL ) , a DRDO lab , determined the propulsion motor requirement and designed the propulsion system . The propulsion motor was made of aluminium alloy . It had two compartments , one for the sustainer and the other for the booster . Explosives Research & Development Laboratory ( ERDL ) , another DRDO laboratory , made the propellant compositions and also developed the SUK black propulsion grains . Molybdenum inserts were used as sustainer . The booster grain had star type hole for very fast burn and the sustainer was cigarette burning type for constant thrust . Control & Guidance . The actuator and gyroscope were the main components of the control and guidance system of the ATM . The Actuators were spoiler type , ( similar to Mosquito ( missile ) ) , which gave a response time of 10 millisecond with a stay time varying from 80 - 20 and 20 - 80 milliseconds . The gyroscope developed for the ATM was a three degree freedom gyroscope . Testing . The missile was test - fired near Imarat , a village on the outskirts of Hyderabad , which held the reliability order of 65 % . The test trials were attended by Gen Bewoor , then Deputy Chief of Army Staff of the Indian Army . The missile was tested 16 times and hit its target 14 times . Two Indian army teams which were trained on European ATMs , Cobra and ENTAC , carried out the tests . These test did not reveal any significant difference between firing the European and indigenous ATMs . Work was still to be done on inhibition of the sustainer motor . Short Closed . In 1969 ATM project was terminated as the Indian Army revised its General Staff Qualitative Requirements ( GSQR ) . The new GSQR extended the range of the missile from 1 . 6 km to 3 km . They also required the previously man - portable missile to be capable of being mounted and fired from a mobile - launcher . This led to production of SS11B1 at Bharat Dynamics Limited ( BDL ) , Hyderabad under license from France . See also . Future Development . Nag missile