The lube oil system shown in the...

🔍 Key Concepts

• Study the legend in the upper‑right corner of the illustration and note each different line type associated with the lube oil system. • Identify the major labeled components: Lube and Scavenge Pump, Scavenge Filters, Lube Supply Filters, Oil Tank, and the Vent Air path. • Recall that gas‑turbine lube systems are often divided into separate functions such as supplying oil to bearings, removing (scavenging) used oil, and handling sump or seal venting.

💭 Think About

• Follow the arrows from the oil tank and see which components and flow paths are clearly part of an oil supply function. • Trace the return paths from the sumps back to the LOSCA (lube oil storage and conditioning assembly) and determine which parts form a scavenging function. • Look at any lines labeled with air or venting near the sumps and exhaust; decide whether this indicates a dedicated sump venting sub‑system or not.

✅ Before You Answer

• Verify which of the listed options are explicitly labeled or clearly represented in the diagram (e.g., "Scavenge Filters," "Lube Supply Filters," "Vent Air"). • Confirm that each candidate sub‑system has a distinct flow path and components associated with it, not just a single pipe or incidental feature. • Before choosing an answer, be sure you can briefly explain how each selected sub‑system operates within this particular lube oil system.

The lube oil system shown in the illustration, consists of which of the following sub-systems? Illustration GT-0024

Lube oil scavenging

Lube oil supply

Sump venting

All of the above

🔍 Key Concepts

💭 Think About

✅ Before You Answer