NEW DEVELOPMENTS


Titanium Launcher Platform

Titanium Launcher Platform

Combat Vehicles Research and Development Establishment (CVRDE), Avadi, has successfully developed a Missile Launcher using Titanium (Ti6A14V) material for NAG Missile Carrier (Namica). It aimed at reducing the overall weight of the missile launcher by 40 per cent by replacing the armour steel with titanium material. Titanium is widely used for highly loaded components like missile launchers that operate at low to moderately elevated temperatures. The high specific strength, good fatigue resistance, creep life and corrosion resistance of titanium make the metal useful for missile launcher applications. Titanium is still relatively expensive compared to steel and aluminium but increasing use of the metal in different areas is expected to accelerate cost reductions, resulting in still more growth in applications. Specialised TIG welding process was adopted for fabricating the structure. The machining was done with the help of Sharman horizontal boring machine fitted with Digital Read Out (DRO). Special Sandvik Carbide tip tools and HSS drill bit were used. The titanium platform was integrated with Namica vehicle.

NAG missile firing trials were carried out from the Titanium Launcher Platform and structural and thermal integrity was proved during these trials.
 

Special Hydrostatic Drive

Research and Development Establishment (Engrs), R&DE (Engrs), Pune, has developed a Closed Loop Constant Speed Controlled Hydrostatic Drive for providing power on the move. It is difficult to directly obtain power from mobile vehicle engines due to varying RPM. Various systems such as ground support for missile launchers require AC power for thermal conditioning, fans, lights, etc. The hydrostatic drive developed by R&DE(E) addresses these issues. In this drive, a variable displacement pump is coupled to the power take off shaft. Using an in-built pump swash plate controller and L VDT feedback, the pump flow is altered. This pump is close-coupled to a fixed displacement motor, which is in turn coupled to an alternator. The feedback of the motor speed is given to a speed controller, which compares the actual motor speed to the desired motor speed and gives the requisite command to the pump controller to achieve the required flow.