Tournament Gear

Weight and Balance

1. Introduction to Physics

analysis, which is itself the application of a process of logical reasoning. This process involves five steps integral:

1. Observation.
2. Hypothesis.

has been established, that the results of the theory in a law of physics.

From the physical point of view, the world is described in terms of four basic parameters:

1. Length.
2. Massachusetts
3. Time.
4. Change.

Physics is not necessarily hand, for example, you stay there, instead of floating to the ceiling due to gravity. Gravity is a part of physics. If you throw an object on a table or a surface, it does not slip indefinitely, but will eventually be shut down and stop because of the presence of friction on this surface. It is also Your car does not float above the floor when you drive it indicates that both gravity and friction are present.

Play someone talk everyday sounds, but the very fact that there are "sound" all indications are that sound waves are under the speaker every second of every day and can not escape this reality, but it still exists and negotiate the physical world. You too, are essentially "physical" since you're part of this world.

Weight and balance, therefore, inevitably physics.

Spanish, for example, he would answer probably "El aircraft." If you also ask someone to translate the same word in German, he probably would have replied: "Das Flugzeug." If secondly, you ask someone how he would "work" in physics, he replied, "fd = W." This is The work is not the scalar product of force multiplied by distance (displacement), whose unit of measure is the "joule."

If the second is not so obvious. If you say it is because of the "weight" to the right end of it, you would or pivot point. We denote this distance by the small letter "r"

r = distance

Finally, and this force rotates combination distance, one way or another, the fulcrum and fulcrum which creates an angle. The angle, generically "theta Formula couple.

Torque = force x distance x sin theta

T = r sine theta F

Torque is derived from the Latin verb "torquere" means "to twist." Several additional definitions implies the following.

1. The vector is 90 degrees with the plane both force and displacement.
2. torque results in a perpendicular motion along the axis of rotation of the line along which the force acts.
3. Torque is the force component perpendicular to the line joining the center of a circle and the point where force is applied, multiplied by the distance between the center of a circle to the torque is multiplied by a force perpendicular distance whereas The food in your calculator and check results.

   theta sine qua = 90

   sine 90 = 1

   Since a number multiplied by one (1) is always equal to itself, its inclusion serves no purpose. For example:

   100 (1) = 100

   Therefore, its results digital inclusion does not change or effect, and the formula for torque can be simplified as follows:

   RF1 = T = rF

   T = rF

   Although the formula may be reduced to two elements, the couple is always the product of them, so the answer to "weight" neither books nor kilograms, but Newton, abbreviated as "N" and the distance of this force is applied from the fulcrum is expressed in meters (m). Their product is the "Newton-meter" or "mN."

   F = Newtons (N)

   r = meters (m)

   Newtons x meters = Newton-meters (Nm)

   Torque and the vector product of the force you apply on the handle and how to handle this finds from the door hinge results in the couple. Although you were never aware that the distance was to help open the door, it actually reduces the amount of effort you had to do exercise, and this fact can be illustrated by some simple examples. Suppose you used 10 Newtons of force to a door whose handle is 1.22 meters in the hinge (which is the door of the axis). By replacing these figures into the formula, you can calculate the amount of torque that you generated, as follows:

   T = rF

   T = 1.22 (10) = 12.2 mN

   T = 12.2 mN

   Suppose the doorknob were transferred to a single position mid-way through the hinge. Would you like to generate the same amount of torque? Let's see.

   1.22 / 2 the distance of the lever arm, you would obviously have to double force to produce the same amount of torque, which means that you must work twice as hard to produce the same results.

   2 (10) = 20

   T = rF

   0.61 (20) = 12.2 mN

   T = 12.2 mN

   If you move the door handle at the joint, How do you generate a couple?

   T = rF

   T = 0 (10) = 0 mN

   T = 0 mN

   You would not, in fact, fulcrum is the "hinge" and the weight of two children are the "forces". Strength, which is obtained by multiplying the mass of an object to accelerate the object is the mathematical expression of the second law of Sir Isaac Newton's motion which states that a force not only causes an acceleration of a body, but that this acceleration is directly proportional to the strength and direction of force. As there are two sides to every swing switches, it can potentially be generated two couples … Couple 1 or "T1" it, as follows:

   Couple 1 = distance of 1 x 1 force

   T1 = r1F1

   Torque 2 = distance of 2 x 2 force

   T2 = r2F2

   If two children 21-Newton seated on either side of a swing Rocking 1.5 meters from its center, the balance could be mathematically determined by inserting the appropriate number in the soil Sat 1.83 m from the fulcrum, how would a child of 18 Newton have to sit to balance the scale? You must calculate the distance.

   Consider, further, a seesaw forces have been given and not their distances from the fulcrum. The notices are, again, worthless in physics.

   If you understand the physical principle of the couple, then you can answer the following questions:

   1. Why a key Torque has a long handle?
   2. If you put on a bike and wanted to turn one of its wheels, where the radius you place the fingers to do so with as little effort as possible … near the center or near the rim?
   3. Why are you not able to raise the side of your car with your bare hands when you need to change a tire, but you are able to do so with a jack?

   4. Swings aircraft

   must rotate the door from vertical to horizontal.

4. We will move the hinges side toward the center.

The way the door can be likened to the scales can also bring the scale is similar to an aircraft.

To understand how the elements of the formula for torque can be applied to the weight and balance of an aircraft, = Force.

3. r = distance.
4. Theta angle = Sine.

The first of these, the distance can be likened to an aircraft lower deck holds, its main deck areas of the passenger cabin, and fuel tanks. How the two sides of the rocker has provided that the distance from the fulcrum, All these places offer the same goal on an airplane.

While the children, or anything else, had provided the forces on the sides The center of gravity is defined as the point at which an object, in case of suspension by a single wire, would balance. Although the angle theta sine, was omitted from the calculation formula of torque, it nevertheless remains the reality, because the couple involves a vector not a scalar product.

Now consider a plane with a load heavier. How could this situation be remedied? The solution lay in the form of torque, changes the distance or the force parameters.

1. Add the load in the aft compartment.
2. Move the load back.
3. charge transfer from front to back.
4. Remove the load from the forward cargo compartment.
5. Move the load forward in the forward hold these other remedies were tried to target one side of the elements of torque, force or distance, more than the other. They were recalled below, indicating which of the two they had mainly targeted and why.
   1. Add the load in the rear hold – F (force), which did not exist before.
   2. Move the load further aft – r (distance) force was added or deleted, but only placed at different distances from the center of gravity.
   3. charge transfer from front to rear. – R (distance), the force was added or deleted, but only placed at different distances center of gravity.
   4. Remove the burden of forward hold – F (force), because the payload was removed, not redistributed.
   5. Therefore, the distance in the formula had been reduced torque.

   The lower deck of an Airbus A-330-200 aircraft, for example, is divided into two distinct zones, the forward cargo compartment and the aft compartment, and include the physical space. However, they are subdivided into compartments 1 and 2 in the forward cargo compartment and compartments 3, 4, and content, such as freight or baggage, are located in this compartment. The total weight of the load in this compartment is also regarded as one force, or "F" in the couple form.

   The principal or the passenger deck of an A-330 has the same goal: it is subdivided into four zones for purposes of weight and balance. All passengers in the form of torque.

   As a result, there are five couples calculations considered on the lower deck and four on the main deck on an A-330, each with its own strength and settings remotely.

   The couple in front of the center of gravity (+) And produce signs spins clockwise. If the sum of negative pairs is equal to the sum of positive couples, the aircraft is in a state steady rotation … which can be considered "optimal trim." Otherwise, the aircraft will be nose-heavy, resulting in a plate front or tail-heavy, resulting in a plate at the rear. Because the net angular acceleration always acts in the direction of greater torque, the couple will be the determinant of the balance of the plane … the same way the distances and weights of the two children to determine if the lever is kept in balance.

   Although equality between the front and the negative torque to the rear, the results positive in the idealized, perfect balance on two swings and planes, they rarely take out such a condition, starting instead of forward or back pad. If the device is not perfectly balanced, as in the past fought for, how can he and take off safely travel to its destination?

   The answer is in the understanding of its three axes in the conquest of control, powered, heavier than air flight because they had implemented a systematic approach to solve its problems of aerodynamics. They focused on three main areas:

   1. Elevator
   2. Propulsion
   3. Balance and control

   It was the latter who finally provided the remedial effect in flight or a nose or an aircraft tail-heavy with a lining less-than-optimal.

   The horizontal stabilizer balances a nose-heavy (negative torque) or tail-heavy (positive torque) flying condition and extent of its travel is determined by the aircraft manufacturer. These parameters are indicated by enclosure balance the respective device. As far as the attitude of an aircraft within these limits, it can be assigned to a flight safely. If it is out of the plate, horizontal stabilizers can not counteract this trend and it can not be assigned to a flight. The golden rule here is that if an airplane is out of trim on the ground, it will be out-of-trim in the air.

   Many other calculations are performed using the balance board. The front of it, for example, yields corrections Index: main and trim tank.

Each of these corrections index is the result of the formula already established couple. All weights placed in any station of weight and balance is considered an "F" and a station shall be considered an "r" these complicated calculations and extend well beyond this discussion, the concept of torque can better illustrate how a plane loaded correctly can lead a reduction in fuel consumption and therefore reduce costs-mile trip. The most rearward center of gravity is loaded, the rearmost the "hinge" is … which in this case is the SO and the distance is the line between it and the horizontal stabilizer. As you know, the couple is the product distance and the strength and shorter this distance, the smaller the resultant torque that must be fought. The tail is actually used in the sense of "correct" the less-than-optimal trim and tail to counteract this trend … hence the term "stabilizer". If your device uses the land for this purpose, you know that your flight is "out-of-trim … which, in physics, can be translated as "imbalance turning serious. "

While this may seem complex, we are still dealing in the simplest form, with T = rF. " While the couple can help open a door on the ground, he couple and this, in turn, leads to reduced fuel consumption.

About the Author

A graduate of Long Island University-C.W. Post Campus with a summa-cum-laude BA Degree in Comparative Languages and Journalism, I have subsequently earned the Continuing Community Education Teaching Certificate from the Nassau Association for Continuing Community Education (NACCE) at Molloy College, the Travel Career Development Certificate from the Institute of Certified Travel Agents (ICTA) at LIU, and the AAS Degree in Aerospace Technology at the State University of New York – College of Technology at Farmingdale. Having amassed almost three decades in the airline industry, I managed the New York-JFK and Washington-Dulles stations at Austrian Airlines, created the North American Station Training Program, served as an Aviation Advisor to Farmingdale State University of New York, and devised and taught the Airline Management Certificate Program at the Long Island Educational Opportunity Center. A freelance author, I have written some 70 books of the short story, novel, nonfiction, essay, poetry, article, log, curriculum, training manual, and textbook genre in English, German, and Spanish, having principally focused on aviation and travel, and I have been published in book, magazine, newsletter, and electronic Web site form. I am a writer for Cole Palen’s Old Rhinebeck Aerodrome in New York. I have made some 350 lifetime trips by air, sea, rail, and road.

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