What are the two common forms of axial...

Question 1 / 270705eccef9fbacbc34ba4d46b18

Question 1 of 270705eccef9fbacbc34ba4d46b18

What are the two common forms of axial compressor rotor blade roots?

Question 1 of 27070

What are the two common forms of axial compressor rotor blade roots?

🔍 Key Concepts

• Axial-flow compressor design in gas turbines • Different blade root attachment types used to secure rotor blades to the disk • Why certain root shapes are preferred for high centrifugal loads and easy maintenance

💭 Think About

• Think about which root forms are specifically associated with high-speed rotating blades in gas turbines, not with general structural fasteners. • Which of these pairs sound like standard, engineered shapes used to lock blades into a disk slot, rather than informal or rarely used terms? • Consider which shapes are designed to spread stresses smoothly and avoid sharp stress concentrations at the root.

✅ Before You Answer

• Identify which options contain a root form that is widely known in turbine/compressor design (for example, very commonly mentioned in textbooks). • Eliminate any terms that sound more like generic hardware or slang rather than formal blade root geometry names. • Make sure the two selected forms are both realistic rotor blade root shapes, not one real and one unlikely or made‑up.

Question 1 of 27070

What are the two common forms of axial compressor rotor blade roots?

Fir tree and key

Sawtooth and knob

Grub and bulb

Fir tree and bulb