HP turbine blades are generally cooled by...

Question 1 / 2707066636eed28f7522a1c51e10b

Question 1 of 2707066636eed28f7522a1c51e10b

HP turbine blades are generally cooled by which of the following methods?

Question 1 of 27070

HP turbine blades are generally cooled by which of the following methods?

🔍 Key Concepts

• Gas turbine blade cooling methods (air cooling vs. water cooling) • Source of cooling medium in a marine gas turbine (where does it practically come from?) • Direction of internal flow through a rotating blade (root vs. tip)

💭 Think About

• Think about what medium is readily available at high pressure and temperature in a gas turbine that can be used to cool the hottest blades. • Consider how a cooling medium can enter and leave a rotating blade: which end is connected to the rotor/disc, and which end is exposed to the gas path? • Ask yourself whether water is normally routed through fast‑spinning HP turbine blades, and what problems that might create.

✅ Before You Answer

• Verify whether compressed air or water is the standard cooling medium for HP turbine blades in marine/aviation‑type gas turbines. • Confirm which end of the blade (root or tip) is attached to the turbine disc and therefore can receive cooling flow from the compressor. • Check that the chosen option matches both: correct cooling medium and correct flow direction through the blade (entry vs. exit).

Question 1 of 27070

HP turbine blades are generally cooled by which of the following methods?

Cooling water entering the root and exiting the tip.

Cooling water entering the tip and exiting the root.

Compressed air entering the root and exiting the tip.

Compressed air entering the tip and exiting the root.

Question 1 / 2707066636eed28f7522a1c51e10b

Question 1 of 2707066636eed28f7522a1c51e10b

HP turbine blades are generally cooled by which of the following methods?

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Question 1 of 27070

HP turbine blades are generally cooled by which of the following methods?