structure of a missile [2]
rudder 
Automated device that guides the missile during flight.
fin 
Ailerons that stabilize the missile during flight.
rocket motor 
Engine that provides the thrust to propel the missile.
fixed winglet 
Ailerons that improve stability during flight.
actuator 
Device that controls the rudders.
infrared homing head 
Instrument that homes in on the heat emitted by the target and automatically guides the missile toward it.
proximity fuse 
Fuse that causes the warhead to explode when required.
gyroscope 
Device whose axis of rotation is constant so that it can guide the weapon.
warhead 
Explosive contained in the missile that is usually made up of gunpowder.
pilot 
Component that guides the missile without human intervention.
battery 
Device that converts chemical energy into electrical energy.