Total loss (expendable) system :
10. For engines which run for periods of short duration, such as booster and vertical lift engines,the total loss oil system is generally used. The system is simple and incurs low weight penalties
because it requires no oil cooler, scavenge pump or filters. On some engines oil is delivered in a
continuous flow to the bearings by a plunger-type pump, indirectly driven from the compressor shaft; on
others it is delivered by a piston-type pump operated by fuel pressure (fig. 8-3).
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| Fig. 8-3 A total loss (expendable) oil system. |
10. For engines which run for periods of short duration, such as booster and vertical lift engines,the total loss oil system is generally used. The system is simple and incurs low weight penalties
because it requires no oil cooler, scavenge pump or filters. On some engines oil is delivered in a
continuous flow to the bearings by a plunger-type pump, indirectly driven from the compressor shaft; on
others it is delivered by a piston-type pump operated by fuel pressure (fig. 8-3).
