A lightly loaded wing has a more efficient cruising performance because less thrust is required to maintain lift for level flight.

Air casters require a smooth, non-porous surface in order to maintain lift and operate properly.

The wing is said to perform even better if it can be constructed of tight mesh, because that reduces its drag, while maintaining lift.

The wings don't retract until the rotor is maintaining lift.

Brim carefully raised her nose till she slowed, barely maintaining lift.

This allowed the engines to be restarted to maintain lift.

If the wing pivots froze, he didn't want to try to maintain lift with the wings back when his airspeed started falling.

But when the aircraft is moving slower, during takeoff and landing, the wing needs greater curvature to maintain lift.

At a higher altitude less oxygen is available for their muscles, and the thin air makes it harder to maintain lift.

I've moved my wings forward to maintain lift.