Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. vehicle components
7. [vehicle components by vehicle type]
8. [aircraft and spacecraft components]

Anotations

Scope note:

Variants of air-breathing jet engines that do not include a rotary compressor; relying instead on the engine's forward motion to compress the incoming air. These do not function at zero airspeed and cannot be used to power aircraft through all phases of flight.