Method and apparatus for energy and data retention in a guided projectile

The present invention pertains to energy and data transfer, and in one embodiment, the present invention pertains to energy and mission data retention in guided weapons. Energy () and mission data () for a guided projectile are transferred from a projectile setter () over an inductive interface (). The projectile may include energy storage element () to store the energy and a data storage element () to store the mission data. Precision GPS clock circuitry () of the projectile may receive power from a capacitive energy storage () element during projectile loading until a flight battery () is activated. In one embodiment, the capacitive energy storage element () includes at least one super capacitor () and a gun-hardened capacitor (). The clock circuitry () may receive power from the gun-hardened capacitor () if the super capacitor () fails during the launching operation. The capacitive energy storage element () may include one-way energy transfer elements () coupled between the super capacitor () and the gun-hardened capacitor (). A regulator () may be coupled to an output of the capacitive storage element () to regulate an input voltage to the clock circuitry ().