Definition
The pilot's active control of the airplane's total mechanical energy — the combination of altitude (potential energy) and airspeed (kinetic energy) — by adjusting power, pitch, and configuration so the aircraft arrives at each point in flight with the right amount of energy for the maneuver or phase of flight.
Plain English
Keeping the airplane at the right speed and the right height for what you're about to do, by using throttle, pitch, and configuration together. Too much energy and you overshoot or float; too little and you sink or stall.
Context Anchor
Seen in discussions of maneuvering, approaches, landings, go-arounds, and any situation where the pilot must control both speed and altitude.
Derivation
From physics: 'energy' here means the airplane's stored ability to do work — height gives it potential energy, speed gives it kinetic energy. 'Management' means actively trading and balancing the two rather than letting them drift. Pilots think in terms of altitude and airspeed because those are what the instruments show, but underneath they are managing one combined pool of energy.
Why Pilots Care
Good energy management keeps the approach stable, prevents stalls or overspeeds, and allows safe go-arounds or landing flares.
Analogy
Think of a cyclist approaching a hill. Speed on the flat (kinetic energy) can be traded for height up the hill (potential energy), and height coming down can be traded back for speed. The skilled rider arrives at the top or bottom with just the right amount of momentum — not coasting too slow, not braking hard. A pilot does the same with throttle and pitch.
Grounding Statement
Altitude is energy you can trade for speed; speed is energy you can trade for altitude; the throttle adds energy to the system and drag bleeds it away.
Intuition Check
Energy management does not mean saving fuel or simply being efficient. Here, it means controlling the airplane’s speed and height so they match the situation.
Example Sentence 1
On a stabilized approach, good energy management means crossing the threshold at the target speed and height with the power already set for landing.
Example Sentence 2
On final approach the student added power and raised the nose to regain lost energy after getting low and slow.