Question

Which one of the following is not an example of an adapted nozzle?

• A. Expansion-Deflection nozzle
• B. Plug nozzle
• C. Spike nozzle
• D. Bell nozzle

Hint:

Understanding different nozzle designs helps in selecting the right nozzle for specific applications in rocket and jet propulsion.

Answer 1

The Correct Option is D

Step 1: Define Adapted Nozzle.
Adapted nozzles are those designed to adjust their geometry or characteristics dynamically or are optimized for specific flow conditions, such as altitude or velocity changes.
Step 2: Review Nozzle Types.
Expansion-Deflection, Plug, and Spike nozzles fall into the category of adapted nozzles as they are designed to optimize performance across varying conditions. The Bell nozzle, while highly efficient, does not inherently possess features that allow for adaptation to changing external pressures or velocities.