Definition
A unit of effective weight equal to one pound multiplied by the current load factor (G-force). It expresses how much an object or component effectively weighs when subjected to acceleration other than 1G, such as during a turn, pull-up, or pull-out.
Plain English
It is the actual weight something feels when the aircraft is pulling Gs. If a 1-pound object is in a 3G turn, it pushes down as if it weighed 3 pounds — that is 3 G-pounds.
Context Anchor
Seen in maintenance and engineering discussions of loads on aircraft or engine parts during acceleration, maneuvering, or vibration.
Derivation
The term combines 'G' (the symbol for the force of gravity used as a unit of acceleration) with 'pound' (the unit of weight). Together it captures the idea that weight effectively multiplies as G-loading increases.
Why Pilots Care
Structural limits, control forces, and engine/component loads scale with G. A part that weighs a few pounds on the ground can effectively weigh many times more during aggressive maneuvering, which is why airframes and mounts are designed to handle G-pounds, not just static weight.
Grounding Statement
In a 2G pull-up, every pound of fuel, oil, and hardware in the aircraft pulls down with twice its normal force — each pound becomes 2 G-pounds.
Intuition Check
Do not read G-pound as just a weight measurement. It is weight multiplied by acceleration, so the load can be much greater than the object’s normal weight.
Example Sentence 1
At 4Gs, the 10-pound accessory mounted on the engine exerts 40 G-pounds on its bracket.
Example Sentence 2
After the overhaul the engine ran smoothly once the rotating assembly was brought below 0.05 G-pounds.