# Peso y balance en el avion

Páginas: 21 (5080 palabras) Publicado: 22 de febrero de 2011
27/08/2008

Jaime F Rodríguez C IET 640 Únicamente Instrucción

Glossary
Arm (lever). The distance on a lever between the fulcrum and the point of application of the force or the weight. Arm (weight and balance). The horizontal distance in inches between a reference datum line and the center of gravity of an object. If the object is behind the datum, the arm is positive, and if it is aheadof the datum, the arm is negative. Balance. A condition of equilibrium, or rest. A lever is in balance when all the forces acting on one side of the fulcrum, or pivot point, are exactly equal to all the forces acting on the opposite side.
Jaime F Rodríguez C IET 640 Únicamente Instrucción

27/08/2008

Glossary
Ballast (aircraft balance). A weight permanently installed in an aircraft to movethe center of gravity to a location within its allowable limits. Center. A point within an object that is the same distance from all points on the surface of the object. CG (center of gravity). The point in an object at which all of the weight is considered to be concentrated. The algebraic sum of the moments about the center of gravity is zero. The center of gravity may be expressed in inches fromthe datum or in percent of the mean aerodynamic chord. Center of gravity may also be thought of as the point within an object about which all the moments trying to rotate the object are balanced.
27/08/2008 Jaime F Rodríguez C IET 640 Únicamente Instrucción

Glossary
Chord of an airfoil. An imaginary line drawn through an airfoil from its leading edge to its trailing edge. The chord, orchord line, is used as a reference, or datum, for laying out the curve of the airfoil. Datum. A reference from which measurements are made. For example, mean sea level is a datum for measuring true altitude, and the freezing point of pure water is a datum for measuring temperature. Datum (aircraft location). An imaginary vertical reference plane or line chosen by the aircraft manufacturer from whichall arms used for weight and balance computation are measured.

27/08/2008

Jaime F Rodríguez C IET 640 Únicamente Instrucción

Glossary
MAC (mean aerodynamic chord).
The chord of an imaginary airfoil that has the same aerodynamic characteristics as the actual airfoil. The length of the MAC is given for many aircraft, and the CG is expressed in percent of the mean aerodynamic chord (% MAC).Jaime F Rodríguez C IET 640 Únicamente Instrucción

27/08/2008

Glossary
LEMAC = Leading Edge of the Mean Aerodynamic Chord. TEMAC =Trailing Edge of Mean Aerodynamic Chord Taxi (aircraft operation). To move an aircraft along the ground or water under its own power, at a slow speed. An aircraft is taxied from an airport terminal to the runway, where it takes off. Useful load (aircraftoperation). The difference between the maximum allowable weight of the aircraft and its empty weight. The useful load of an aircraft includes the weight of the fuel and oil, the crew, the passengers, all of their baggage, and any cargo carried.
27/08/2008 Jaime F Rodríguez C IET 640 Únicamente Instrucción

Glossary
Moment. A force that causes or tries to cause an object to rotate. The moment of alever is the distance, in inches, between the point at which a force is applied and the fulcrum, or the point about which a lever rotates, multiplied by the force, in pounds. Moment is expressed in inch-pounds. Moment = distance • force In weight and balance, a moment that causes a nosedown condition is a negative moment, and one that causes a nose-up condition is a positive moment. moment index(weight and balance). A moment divided by a constant, such as 10, 100, 1,000, or an even larger number. The use of a moment index allows weight and balance computations to be made using smaller numbers, and this decreases the chance for errors.
27/08/2008 Jaime F Rodríguez C IET 640 Únicamente Instrucción

Glossary
Tare weight (aircraft weight and balance). The weight of all the chocks and...

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