Final answer:
The ingestion zone in aviation refers to the area in front of an engine where objects can be ingested. For the MD80, this zone varies at idle power and breakaway power settings.
Step-by-step explanation:
The question revolves around the concept of ingestion zone in aviation, particularly related to the MD80 aircraft series. The ingestion zone refers to the area in front of an aircraft's engine where debris and other foreign objects can be ingested into the engine, which could lead to engine damage or failure. This zone's size varies based on the power setting of the engine. At idle power, the ingestion zone is smaller, and as the power is increased to breakaway power, which is the thrust setting used to start moving the aircraft for taxiing, the zone expands.
Unfortunately, the exact dimensions for the ingestion zones at idle and breakaway power settings for the MD80 engines are not provided here and could be subject to airline operation manuals or technical specifications provided by the engine manufacturer. Typically, this information is included in pilot training and aircraft operation documentation to ensure safe handling of the aircraft on the ground. As the MD80 aircraft have been in service for many years, these specifications might also be found in legacy documentation or reference materials used by aviation professionals.