Definition
A short climb produced by trading airspeed (kinetic energy) for altitude (potential energy) rather than by adding engine power. The pilot raises the nose with the elevator, which slows the airplane while gaining height, until the stored speed is used up.
Plain English
Pulling up to gain altitude by giving up speed, instead of climbing by using more engine power.
Context Anchor
Encountered in elevator-control discussions, where the FAA explains that pulling back on the elevator can make the airplane climb briefly by trading speed for height.
Derivation
Energy exchange describes swapping one form of energy for another. In flight, speed and height are both forms of energy, and the elevator is the control that lets the pilot trade between them.
Why Pilots Care
Allows a steeper climb angle when power is limited or when clearing obstacles quickly.
Analogy
Like a cyclist who stops pedaling at the bottom of a hill and uses their built-up speed to coast partway up the other side. Once the speed is gone, the climb stops.
Grounding Statement
Picture gently raising the nose after building extra speed and watching the altitude increase while the airspeed decreases.
Intuition Check
Do not assume every climb is caused by extra engine power. In an energy exchange climb, the airplane is mainly converting speed into height.
Example Sentence 1
The instructor demonstrated an energy exchange climb by pitching up at cruise speed, showing how the airplane gained a few hundred feet before the airspeed decayed.
Example Sentence 2
During the maneuver, an energy exchange climb let the airplane gain altitude without adding throttle.