🔍 Key Concepts

• Impulse turbine blading construction and how shrouds are attached at the blade tips • The purpose of tenons, dovetails, and locking features in turbine blades • Differences between permanent joints (like welds) and mechanical retention methods on rotating machinery

💭 Think About

• Think about which attachment method can securely hold shrouding on rapidly rotating blades while still allowing for blade replacement or repair. • Ask yourself: which of these options is most commonly associated with the blade tip area rather than the root or wheel rim? • Consider which method is designed to deform or lock metal in place mechanically without requiring additional parts.

✅ Before You Answer

• Identify where dovetails are usually located on turbine blades (tip vs. root). • Recall which methods are generally used for tip shrouds specifically, not the blade root or wheel connection. • Eliminate any method that would be impractical on each individual blade tip in a high-speed turbine.