Assertion: prop | /r/CapableOf | drive the engine
Facets:
value: at very low map
type: OTHER
value: through the psru
type: TRANSITIVE-OBJECT
Source sentences:
text: Note that, during this adventure, the prop is windmilling and driving the engine through the PSRU, creating the effect of a large vacuum pump (MAP = 5" HG) and a very effective speed brake.
text: In this situation (with the prop driving the engine at very low MAP), the descent rate necessary to maintain safe airspeed would be daunting to all but the most experienced pilots.