Lift. Aerodynamic force which acts on an airfoil perpendicular to the relative wind and is usually exerted upward, opposing force of gravity.

Loop. Maneuver in which an airplane makes a circular path in the vertical plane, with its lateral axis horizontal

Low·wing monoplane. An airplane whose wing is mounted at or near the bottom of the fuselage.

M

Mach number. A number expressing the ratio of the speed of a moving body or of air to the speed of sound, with Mach 1.0 equal to the speed of sound.

Mid-wing monoplane. An airplane whose wing is mounted halfway between the top and bottom of the fuselage.

Mush. To settle or to gain little or no altitude while flying with the airplane's nose held high.

N

Nacelle. A housing on an aircraft for engines, personnel, or equipment.

Nose cone. The shield that fits over, or is, the nose of an aerospace vehicle; constructed to resist the high temperatures generated by friction with air particles.