Discuss the uses of customer bleed air. During an intake inspection you notice the anti-icing piping in front of the combustion and cooling intakes. This topic discusses the purpose and operation of all major components in the bleed air system. This lesson also covers the systems supplied by the bleed air system. These systems include prairie, masker, and GTE cross-bleed start air.
Customer bleed air passes through the bleed air valve located inside the module.
Bleed air exits the module through the base penetration plate. The anti-icing system pipes the hot bleed air directly into the intakes to prevent ice formation. Bleed air used for cross bleed starts, masker air, and prairie air passes through the bleed air reducing valve. This valve reduces bleed air pressure from 250 to 75 psig. Bleed air then passes through the bleed air cooler.