Pyro Based Systems in Fin Locking Mechanism for Missile Applications

A Pyro based mechanism is used in flight vehicles for control of fins. Here, a Pyro pin puller based lock and release mechanism has been designed to lock (arrest the movement of) the control fins when the missile is under carriage condition and to unlock when the missile clears the nose tip of aircraft after launch. This is a very critical mechanism as far as the launch of the missile is concerned. The dimensions of the individual components are derived from the classical design approach. The modelling of the components has been done by using solid works and the analysis is carried out using ANSYS.