Climb rate refers to the speed at which an aircraft ascends in the sky, typically measured in feet per minute (fpm). It indicates how quickly a plane can gain altitude after takeoff or during a climb. A higher climb rate is often desirable for efficient ascent, especially in situations like avoiding obstacles or reaching cruising altitude quickly. Factors affecting climb rate include the aircraft's weight, engine power, and atmospheric conditions. For example, a light aircraft may have a better climb rate than a heavier commercial jet under the same conditions. Pilots monitor climb rate to ensure safe and effective flight operations.