On the marine gas turbine engine as shown in...

Question 1 / 270705eccef9fbacbc34ba4d46b9d

Question 1 of 270705eccef9fbacbc34ba4d46b9d

On the marine gas turbine engine as shown in the illustration, the main lube oil system is cooled by ______. See illustration GT-0017.

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Question 1 of 27070

On the marine gas turbine engine as shown in the illustration, the main lube oil system is cooled by ______. See illustration GT-0017.

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Contamination risk to turbine bearings and lube oil coolers from using seawater directly • Typical shipboard central cooling systems for sensitive equipment (gas turbines, electronics, lube oil) • Separation between main turbine lube oil and reduction gear lube oil systems

💭 Think About

• Which cooling medium would engineers avoid routing near fine turbine bearings because of corrosion and contamination? • Does the illustration (and your shipboard experience, if any) suggest that the turbine lube oil cooler ties into a shipwide cooling loop, or into the reduction gear system? • Is hot compressed bleed air a sensible choice for cooling oil, or is it normally a heat source?

✅ Before You Answer

• Eliminate any option that would increase risk of salt contamination in the turbine lube oil system. • Ask whether the turbine and reduction gear normally share one common lube oil system or two separate, independent systems. • Confirm which system on most gas‑turbine ships supplies cooling to sensitive equipment: central seawater directly or a freshwater cooling loop cooled by seawater.

Question 1 of 27070

On the marine gas turbine engine as shown in the illustration, the main lube oil system is cooled by ______. See illustration GT-0017.

central saltwater

reduction gear lube oil

central freshwater

main engine bleed air

Question 1 / 270705eccef9fbacbc34ba4d46b9d

Question 1 of 270705eccef9fbacbc34ba4d46b9d

On the marine gas turbine engine as shown in the illustration, the main lube oil system is cooled by ______. See illustration GT-0017.

Back

Question 1 of 27070

On the marine gas turbine engine as shown in the illustration, the main lube oil system is cooled by ______. See illustration GT-0017.

If the question has a related picture, it will appear here.