Definition
A visual representation showing the airplane's possible combinations of airspeed (kinetic energy) and altitude (potential energy) for a given configuration and power setting, used to understand how the airplane can move between energy states during maneuvering.
Plain English
A picture that shows how an airplane can trade speed for height, or height for speed, and what combinations of the two are actually possible at any moment.
Context Anchor
Seen in energy management discussions, especially when learning how altitude and airspeed can be traded during climbs, descents, turns, approaches, and other maneuvers.
Derivation
From the everyday sense of a 'map' as something that shows what is reachable from where you are. Here it maps the airplane's energy possibilities rather than geography — what speeds and altitudes you can move to, and how.
Why Pilots Care
It helps pilots visualize safe energy trades during climbs, descents, turns, and approaches so they do not inadvertently deplete energy and enter a stall or unsafe condition.
Analogy
Think of a cyclist on a hill. Speed and height can be traded — coasting down adds speed, pedaling hard up a hill trades speed for height. The energy map is just a clearer way to see those trade-offs for an airplane.
Grounding Statement
If the airplane is low and slow, the energy map shows that it has less room to trade height or speed than it would have if it were higher, faster, or both.
Intuition Check
Do not think of an energy map as a physical chart carried in the cockpit. Here, it means a visual tool for understanding the airplane’s height-and-speed situation and what changes are possible.
Example Sentence 1
The instructor used an energy map to show how trading altitude for airspeed could help recover from a slow, high approach.
Example Sentence 2
In the traffic pattern the instructor used the energy map to show why excess speed on final could be converted to a higher approach without adding power.