Diaz,+Brandon

Hello my name is Brandon Diaz

Problem Statement Exp.1: Which homemade paper airplane design flies best? Exp2: Does the type of paper airplane affect how it flies? Exp:3 Does the weight on the paper airplane affect how it flies. Hypothesis Exp.1:If I change a design of a airplane it will affect the flight because the surface area of thewing is little there will be more air on it but it will be hitting down. Exp.2: If I use diffrent types of paper how it flies will get affected. Exp.3: If I put weight on different parts of the paper airplane it will affect how it flies.

Independent Variable: Exp. 1 The type of design on the homemade paper airplane.

Dependent Variable:Exp. 1 The amount of time the paper airplane takes to fall on the ground.

Controlled Variable: Exp:1 (5) 1. The type of paper 2. The weight on the paper plane 3. The angle I throw the airplane. 4. The strenght you throw it 5. The amount of wind hiting the airplane

Independent Variable: Exp 2 - The type of paper of the homemade paper air planes. Independent Variable; Exp.3 - The weight on the airplane Dependent Variable: Exp 2 - The amount of time the paper air plane takes to fall. Dependent variable: Exp. 3 - The time tyhe airplane takes to fall Controlled Variable: Exp 2 (5) Controlled Variable: Exp 3 1. the design of the airplane 1. the design of thepaper airplane 2.the wind hiting the airplane 2. The type of paper 3. theangle 4. the strenght on the airplane 5.the weight on the airplane

Air resistance is like a drag. It is a force that reacts on solid object on the direction the

solid is going. Unlike other resistive forces such as dry friction, which is nearly independent of velocity, drag forces depend on velocity.

Some examples of drag is like when two forces are acting in the oppisite

Of the direction and the a solid object like a car ,airplane, boat hulls, and aircraft in

motion. There are types of drags (air resistance) parasitic drag, skin friction, interference

drag, form drag, lift- induced drag, and wave resistance. Form drag, skin friction, and

interference drag are on bluffed bodies not coined being of elements. Lift - induced drag

are only from wings or lifting body are present ,therefore usually discussed in a semi

planning or a planning hulls. Wave resistance is formed when a solid object moving

trough a speed of sound in that fluid or in case there is a freely moving surface with

surface waves radiating from a object. wind resistance a layman's term used to describe drag. Its use is often vague, and is usually used in a relative sense. Thus, the resultant power needed to overcome this drag will vary as the cube of velocity. A car using on a highway at 50 mph may require only 10 horsepower to overcome air drag, but that same car at 100 mph requires 80 horsepower. These are some drags that I did not put the right meaning. Lift induced drag is drag which occurs as the result of the creation of lift on a three-dimensional lifting body, such as the wing or fuselage of an airplane. Parasitic drag (also called parasitic drag) is drag caused by moving a solid object through a fluid. Wave resistance (also called compressibility drag) is drag which is created by the presence of a body moving at high speed through a compressible fluid. In aerodynamics , Wave resistance consists of multiple components depending on the speed regime of the flight. Aerodynamics Aerodynamics is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a moving object. Aerodynamics is often used with gas dynamics, with the difference being that gas dynamics applies to all gases. Understanding the motion of air around an object enables the forces and moments acting on the object. Aerodynamic problems can be classified according to the flow environment. External aerodynamics is the study of flow around solid objects of various shapes. Evaluating the lift and [|drag] on an airplane or the shock waves that form in front of the nose of a [|rocket] are examples of external aerodynamics. Aerodynamic problems can also be classified according to whether the flow speed is below, near or above the speed of sound. A problem is called subsonic if all the speeds in the problem are less than the speed of sound, if speeds both below and above the speed of sound are present when the characteristic flow speed is greater than the speed of sound, and when the flow speed is much greater than the speed of sound. Another aerodynamics is Internal is the study of flow through passages in solid objects. For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an [|air] conditioning pipe. Some compressible aerodynamics are Subsonic flow also transonic flow and hypersonic flow. Transonic flow refers to a range to a range of velocities just below and above the local [|speed] of sound. Supersonic aerodynamic problems are those involving flow speeds greater than the speed of sound. Calculating the lift on the Concorde during cruise can be an example of a supersonic aerodynamic problem. In aerodynamics, hypersonic speeds are speeds that are highly supersonic. Hypersonic flow is characterized by high temperature flow behind a shock wave, viscous interaction, and gas. An incompressible flow is characterized by a constant density despite flowing over surfaces or inside ducts. A flow can be considered incompressible as long as its speed is low. For higher speeds, the flow will begin to compress as it comes into contact with surfaces. The concept of a bounder layer is important in many aerodynamic problems. Flows for which viscosity cannot be rejected are called viscous flows. Gases are composed of [|molecules] which collide with one another and solid objects. By defining a [|control] volume around the flow field, equations for the conservation of mass, momentum, and energy can be defined and used to solve for the properties. Some problems may encounter only very small viscous effects on the solution, in which case viscosity can be considered to be bad.

Surface Area Surface Area is the term used to describe the area of an object that is exposed. In other words, if you took a tennis ball, the outside of the ball is it's surface area. If you

cut the tennis ball in half, the original outside part is still part of the surface area but now include the inside as well.

Surface Area is the measure of how much exposed area a solid object has, expressed in square units. Surface area is important in [|chemical] kinetics. Increasing the surface area of a substance generally increases the rate of a chemical reaction. For example, [|iron] in a fine powder will [|combust] , while in solid blocks it is stable enough to use in structures. The surface area of an organism is important in several considerations, such as regulation of body temperature and [|digestion] . Animals use their teeth to grind food down into smaller particles, increasing the surface area available for digestion. As the volume increases much faster than does the surface area, thus limiting the rate at which substances diffuse.

data:Exp 1


 * Paper Plane's || =====Trial1( Time )===== || =====Trial2=====

|| Trial 3 (Time) || =====Average===== || sec || 1.35 || sec || 1.73 ||
 * =====Plane A===== || =====1.47 sec===== || =====1.37===== || 1.23
 * =====Plane B===== || =====1.95 sec===== || =====1.49 sec===== || 1.75
 * =====Plane C===== || =====2.07=====

sec
|| =====2.22 sec===== || 2.13 sec || 2.14 || Data: Exp 2

Exp: 3
 * Type of paper || Trial 1 || Trial 2 || Trial 3 || Average ||
 * Construction || 2.05 || 2.07 || 2.11 || 2.06 ||
 * Copy || 2.03 || 2.09 || 2.06 || 2.05 ||
 * Toilet || 0.45 || 0.39 || 0.56 || 0.65 ||
 * Place of weight on airplane || Trial 1 || Trial 2 || Trial 3 || Average ||
 * Tip || 0.75 || 0.83 || 0.95 || .87 ||
 * Middle || 1.45 || 1.79 || 1.96 || 1.73 ||
 * End || 0.57 || 0.68 || 0.49 || 0.69 ||

Conclusion Exp:1- My hypothesis was correct if I changed the design of each paper airplane. It will affect which flies best ( Plane C) Conclusion Exp:2- My hypothesis wa scorrect if I used different types of paper it wil affect which flies best ( Construction) Conclusion Exp:3- My hypothesis was correct if I placed weight on different parts of the paper airplane it will affect which flies best ( Middle)