In the late 1970’s, the importance of ramjet propulsion was recognized. In fact aerodynamics team led by Shri RN Agrawal, were the first to generate flight trajectories using ramjet propulsion. Those days Acoustic Test Facility (ATF), Defence Research and Development Laboratory (DRDL), did not have computational facilities. Hence the scientists used to go to ECIL and CMC, working in night shift to run the trajectories.

When it was considered vital to set up a ramjet facility, ATF was the best choice in view of the large air supply available and also the basic work already done by the RN Agrawal team.

An open test bed was established near the 2D tunnel area and separate air supply line was taken from the manifold through a common pressure regulating valve. The test bed was designed for SAM-6 class of ramjet propulsion motor.

The very first test during 1982-83, using a SAM-6 motor was a resounding success. The necessary instrumentation was supplied by GID and Strategic Plans Division (SPD) scientists participated too.

This facility was thoroughly redesigned to 300 MM integral rocket ramjet facility for Akash SAM. Baring one test due to manual error, 15 successful tests took placein a row. The facility has been fully computerized – single handedly by MVKV Prasad a Scientist “E” at ATF.

This facility now produces ramjet engines for most purposes.