Super Integrated Power Unit (SIPU) for the F-16 Engine Start System

The F-16 main engine inflight restart capability would be greatly enhanced by utilizing a Super Integrated Power Unit (SIPU). Because the available starter power remains constant at all altitudes, the engine can be motored at relatively high rotative speeds, providing for rapid acceleration to a self sustaining condition after relight. This reduced start time plus a multiple start capability, reduces altitude loss and increases safety during combat. The SIPU concept expands the airstart window and allows the pilot to assume a “best range” flight attitude which maximizes both time and range by up to 35% in the event the engine is not able to start.