| A | B |
|---|
| Acceleration | the rate at which a car or other vehicle can go faster |
| Accrete | to cause to adhere or become attached |
| Adjust | to change or move something slightly to improve it or make it more suitable for a particular purpose |
| Adverse | conditions that make it difficult for something to happen or exist |
| Aerodynamics | a science that studies the movement of air and the way that objects (such as airplanes or cars) move through air |
| Appropriate | correct or suitable for a particular time, situation, or purpose |
| Ascertain | to find out something |
| Axis | a straight line about which a body or a geometric figure rotates or may be supposed to rotate |
| Airflow | the movement of air through or around something |
| Ballooning | due to ground effect, a landing aircraft that is flared too early will seem to float above the runway |
| Bulk | a big mass or shape of something; the main or largest part of something |
| By-pass | an opening or other structure that allows gas or liquid to flow around something |
| Camber | to curve upward in the middle |
| Characteristic | a quality or feature of something or someone that is typical of them and easy to recognize |
| Circulate | to move around within a system, or to make something do this |
| Combine | to have two or more different features or qualities at the same time; to mix two or more different things |
| Comparison | a statement or examination of how similar or different two people or things are |
| Compensate | to counterbalance; offset; be equivalent to |
| Compress | to press something or make it smaller so that it takes up less space, or to become smaller |
| Coordinate | to combine in harmonious relation or action |
| Corkscrew | to move in a spiral or zigzag course |
| Corresponding | having similar qualities or a similar size, position etc to something else |
| Counteract | to reduce or prevent the bad effect of something, by doing something that has the opposite effect |
| Counterbalance | to have an equal and opposite effect to something such as a change, feeling etc |
| Critical | The critical angle of attack is the angle of attack which produces maximum lift coefficient. |
| Crucial | something that is extremely important, because everything else depends on it |
| Density | the relationship between the mass of something and its size |
| Distribution | the frequency of occurrence or the natural geographic range or place where any item or category of items occurs |
| Derive | to develop or come from something else |
| Desire | a strong hope or wish |
| Determinants | a determining agent or factor |
| Downwash | a deflection of air downward relative to an airfoil that causes the deflection |
| Drag | the force of air that pushes against an aircraft or a vehicle that is moving forward |
| Dynamic | continuously moving or changing |
| Effect | the way in which an event, action, or person changes someone or something |
| Efficient | performing or functioning in the best possible manner with the least waste of time and effort |
| Element | one part or feature of a whole system, plan, piece of work etc, especially one that is basic or important |
| Eliminate | to completely get rid of something that is unnecessary or unwanted |
| Elliptical | having the shape of an ellipse |
| Encounter | to come upon or meet with, especially unexpectedly |
| Equilibrium | a balance between different forces that compete with each other, so that none is stronger than the others and a situation is not likely to change suddenly |
| Establish | to install or settle in a position |
| Excess | additional and not needed because there is already enough of something |
| Exert | to use power, influence etc in order to make something happen |
| Expand | to become larger in size, number, or amount, or to make something become larger |
| Extraneous | coming from outside |
| Factor | one of several things that influence or cause a situation |
| Film | a very thin layer of liquid, powder etc on the surface of something |
| Flow | a smooth steady movement of liquid, gas, or electricity |
| Force | strength or power exerted upon an object |
| Friction | the natural force that prevents one surface from sliding easily over another surface |
| Fundamental | relating to the most basic and important parts of something; very necessary and important |
| Further | more or additional |
| Gain | to increase in weight, speed, height, or value |
| Hence | for this reason; therefore |
| Horizontal | flat and level |
| Incorporate | to include something as part of a group, system, plan etc |
| Indicate | to show that a particular situation exists, or that something is likely to be true |
| Induce | to cause something to happen; to cause an effect |
| Interdependence | a situation in which people or things depend on each other |
| Lateral | relating to the sides of something, or movement to the side |
| Lift | a lifting or raising force |
| Longitudinal | going from top to bottom, not across |
| Maintain | to make a level or rate of activity, movement etc stay the same |
| Maneuver | an act or instance of changing the direction of a moving ship, vehicle, etc., as required |
| Margin | a border or edge; a limit in condition, capacity, etc., beyond or below which something ceases to exist, be desirable, or be possible |
| Momentum | force or speed of movement; impetus, as of a physical object |
| Mono | one |
| Motion | the process of moving or the way that someone or something moves |
| Offset | something that counterbalances, counteracts, or compensates for something else; compensating equivalent |
| Oppose | to act against or provide resistance to |
| Opposite | situated, placed, or lying face to face with something else or each other, or in corresponding positions with relation to an intervening line, space, or thing |
| Overall | considering or including everything |
| Periodic | happening a number of times, usually at regular times |
| Pitch | an up and down movement of a ship or an aircraft |
| Poor | not as good as it could be or should be |
| Potential | capable of being or becoming; possible, as opposed to actual |
| Prime | most important |
| Principle | the basic idea that a plan or system is based on |
| Prolong | to lengthen out in time; extend the duration of; cause to continue longer |
| Raise | to move or lift something to a higher position, place, or level |
| Reduce | to make something smaller or less in size, amount, or price |
| Reduction | a decrease in the size, price, or amount of something, or the act of decreasing something |
| Relative | something dependent upon external conditions for its specific nature, size, etc |
| Resistance | the opposition offered by one thing, force, etc., to another |
| Rotate | to turn around on or as if on an axis |
| Scenario | an imagined or projected sequence of events, especially any of several detailed plans or possibilities |
| Section | one of the parts that something such as an object or place is divided into |
| Simultaneous | existing, occurring, or operating at the same time; concurrent |
| Skin | a layer that is part of a vehicle, building, object etc, especially on the outside |
| Span | the distance from one side of something to the other |
| Specified | to state something in an exact and detailed way |
| Static | not moving, changing, or developing |
| Steep | a road, hill etc that is steep slopes at a high angle |
| Stream | a flow of water, air, smoke etc, or the direction in which it is flowing |
| Streamline | to form something into a smooth shape, so that it moves easily through the air or water |
| Sufficient | as much as is needed for a particular purpose |
| Surface | the outside or top layer of something |
| Swirl | to move around quickly in a twisting circular movement, or to make something do this |
| Symmetrical | an object or design that is symmetrical has two halves that are exactly the same shape and size |
| Taper | to become gradually narrower towards one end, or to make something become narrower at one end |
| Tendency | a general change or development in a particular direction |
| Thrust | the force of an engine that makes a car, train, or plane move forward |
| Total | the total amount; sum; aggregate |
| Upwash | the upward flow of air directly ahead of the leading edge of a moving airfoil |
| Velocity | the speed of something that is moving in a particular direction |
| Versus | as compared to or as one of two choices; in contrast with |
| Viscosity | the property of a fluid that resists the force tending to cause the fluid to flow |
| Viscous | a viscous liquid is thick and sticky and does not flow easily |
| Vital | of critical importance |
| Weight | the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity |
| Yaw | a motion of an aircraft about its vertical axis |
| Angle of attack | angle of attack specifies the angle between the chord line of the wing of a fixed-wing aircraft and the vector representing the relative motion between the aircraft and the atmosphere |
| Air density | density of air is the mass per unit volume of Earth's atmosphere |
| Aspect ratio | the ratio of the sizes of a geometric shape |
| Center of gravity | the point through which the resultant of gravitational forces on a body passes and from which the resultant force of attraction of the body on other bodies emanates: coincident with the center of mass in a uniform gravitational field |
| Flight forces | the 4 forces that act on an aircraft in flight |
| Ground effect | in fixed-wing aircraft, the increased lift (force) and decreased aerodynamic drag that an aircraft's wings generate when they are close to a fixed surface |
| Kinetic energy | the energy that a moving object possesses due to its motion |
| Load factor | the ratio of the lift of an aircraft to its weight |
| Surface area | the total area that the surface of an object occupies |
