PHAK · Chapter 11: Aircraft Performance
FAA · Retrieved 2026-09-05
Educational reference; original Owl summariesPERFORMANCE
Aircraft energy
FLIGHT SCIENCE / CONCEPT REFERENCE
SCIENCEConditions & principles
An aircraft’s mechanical energy combines motion and height.
REFERENCE COVERAGE3 / 3 editorial sections
PROVENANCE1 linked source
LAST RETRIEVED2026-09-05
Editorial section coverage describes the article structure, not scientific validation or completeness.
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Source editions
PHAK · Chapter 11: Aircraft Performance ↗Edition / snapshot: FAA-H-8083-25C, 2023Retrieved: 2026-09-05
Retrieval dates record when Owl obtained the data; they are not publication dates or proof that a specification is current. Where the edition contains only a snapshot date, the original publication date is not recorded.
01
Mechanism
Thrust adds mechanical energy while drag dissipates it. Potential and kinetic energy can be exchanged through changes in the flight path.
02
Aircraft response
A speed increase can come at the expense of height when net energy input is limited. High drag can rapidly reduce the available energy.
03
Context & interpretation
The simple expression excludes rotational and internal energy. It explains trends, not aircraft-specific performance limits.
Physical relationship
E = ½ m V² + m g hm: mass; V: speed; h: height relative to a selected reference.
Sources & context
Educational explanation of physical mechanisms. Aircraft-specific procedures, limitations and current weather information are separate references.