Lift is when the wing is getting pushed upwards harder than it is getting pushed downwards. If this is happening, then it means gravity is not as strong on the plane as thrust and lift are. Lift is the starting point and the middle of the flight. If the plane is moving upwards, lift is taking place. When a paper airplane is going down, lift is not taking place.When the air is going under the wings of the plane this is also lift.
INTRODUCTION Aerodynamics is the study of how gases interact with moving bodies. Because the gas that we encounter most is air, aerodynamics is primarily concerned with the forces of drag and lift, which are caused by air passing over and around solid bodies. Engineers apply the principles of aerodynamics to the designs of many different things, including buildings, bridges and even soccer balls; however, of primary concern is the aerodynamics of aircraft and automobiles. THE BASIC FORCES OF THRUST,DRAG AND LIFT There are three basic forces to be considered in aerodynamics: thrust, which moves an airplane forward; drag, which holds it back; and lift, which keeps it airborne. Lift is generally explained by three theories: Bernoulli 's principle, the Coanda effect, and Newton 's third law of motion.
Theory: The principle we tested in this lab was Newton’s second law that states the net force on an object is equal to the mass of the object times its acceleration (F ⃗=ma ⃗). The formulas we used were: Δx=V_0x t+(a_x t)/2, we assumed the initial velocity V_0x=0 because it is extremely small, then we solved for a_x to get a_x=2Δx/t^2. a=gsin(θ). Experiment: The materials used in this lab were an air track, an air blower, a glider, computer, and wooden blocks. For table 1, my group and I started by making sure the air track was functional along with the motion detector if the air blower was working, and running the computer program for gathering data.
“The airplane stays up because it doesn 't have time to fall” Wilbur Wright said this quote because he never gave up on inventing the first plane. Through his and orville’s trial and error they created and flew the first plane in mankind. Through their creation they changed the mode of transportation forever. The airplane now travels people, animals and luggage in a very short amount of time. The Wright Brothers didn 't just affect america but the whole world!
Member’s forces are discovered considering all the joints or points in a state of equilibrium. Therefore for plane truss, the two independent equations of statics exist for concurrent force system (∑Fx=0 and∑Fy=0). The joint will move if there exist net force acting towards the joint. In addition, the method of section is applied by separate the truss structure into sections, and then replaces the removed section with unknown member forces acting in the direction of the cut member. The forces in the members are calculated by summation of unknown forces by using equilibrium equation∑Fx=0, ∑Fy=0 and∑M=0.
Explaining Flight 1.1: The Physics of Bird Flight: Components: I. Drag: (Air Resistance) The force opposite to the force of the motion of an object through a fluid. (Fluid in this report refers to the medium the bird/object is moving through- i.e. Air). Drag is created because the object and the fluid are exchanging momentum upon impact, and thus creating a force opposite to the motion of the object.
Fluid Mechanics-II Project Farhan Akram Department of Mechanical Engineering College of Electrical & Mechanical Engineering National University of Sciences & Technology Rawalpindi, Pakistan email@example.com Question - Large commercial airplanes cruise at high altitudes (up to about 40,000 ft) to save fuel. Discuss how flying at high altitudes reduces drag and saves fuel. Also discuss why small planes fly at relatively low altitudes. (Cengel 11-112) Index Terms – Plane, Altitude. SOLUTION The pilot needs to know how high above the earth the plane is traveling, i.e.
1.0 Introduction 1.1 Research Question, Aim and Hypothesis 1.1.1 Research Question What are the best modifications to increase the launch height of a 1.25L water rocket? 1.1.2 Aim The aim of the experiment was to investigate the effects of changing the air resistance and stability of the rocket and how it affects the rocket’s launch height when the air pressure and water volume is kept controlled. 1.1.3 Hypothesis That by reducing the air resistance with a parabola shaped nose cone and tapered swept fins and increasing stability with the fins by pushing the centre of pressure back behind the centre of mass we would have achieved the greatest launch height that what was believed. 1.2 Justification of Hypothesis Air resistance affects a rockets drag and stability. The amount of air resistance that has effect on a rocket’s velocity primarily depends on the shape of the nose cone.
This example can show us to how expensive to design and manufacture an aircraft. Therefore, all different types of aircrafts have different design process depend on their purposes. First step of design process is conceptual design. ”We typically design hundreds of aircraft concepts at the "conceptual" level for every one that ever actually flies.” says Raymer, D. It is a good example to understand how conceptual design is important. The design process starts with the aircraft's predetermined purpose.
Aerodynamics is a subfield of fluid dynamics and gas dynamics, and many aspects of the theory of aerodynamics are common to these fields. The term streamline is often synonymous with gas dynamics, with the difference that the "gas dynamic" is the study of the movement of all gases used, not limited to air. Formal study aerodynamics in the modern sense began in the eighteenth century, although the observations of reason, such as drag concepts were recorded much earlier. Most of the early efforts in aerodynamics worked in achieving heavier than air flight, the first of Wilbur and Orville Wright in 1903 Since then demonstrates the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experiments and computer simulations, the scientific basis for the ongoing developments made in heavier than air flight and many other technologies. Recent work on the aerodynamics has focused on issues of compressible flow, turbulence and boundary layers in context and has increasingly rake