Aerodynamics

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  • Advantages And Disadvantages Of Aerodynamic

    While designing any aerodynamic body an unspoken assumption of bilateral or mirror symmetry is taken into consideration. Argument against this bilateral symmetry states that “once the velocity of sound is exceeded, the laws of aerodynamics change in such a way as to make it seem inadvisable to arrange the components of an airplane side by side or abreast in a supersonic stream unless there are compelling reasons for such an arrangement.“ 2.1.1 Wave Drag This type of drag is formed as a result of shock waves formed around an aircraft. Wave drag is the main reason behind the designing of oblique wings. This design has been found to reduce wave drag for a supersonic aircraft and can be believed as an aerodynamic evolution to swept wings on symmetric aircraft configurations. This wing is not symmetric at supersonic speeds, but rotates about a central pivot, which allows the maximum cross sectional area perpendicular to the flow to be half that of a similar symmetric design. The…

    Words: 1976 - Pages: 8
  • Aerofoil Essay

    and Yousefi and Saleh investigated the effects of suction and blowing jet width on the aerodynamic characteristics of a NACA 0012 airfoil. They found that the jet width of about 3.5% ~ 4% of the chord length is optimum for tangential blowing, while for perpendicular blowing smaller jet widths are more efficient. 2.2 Control of flow around a NACA 0012 airfoil with a micro-riblet film by S.-J. Lee , Y.-G. Jang In the present study they studied about the flow structure of the wake behind a…

    Words: 1632 - Pages: 7
  • Pressure Distribution In An Airfoil

    1- Summary This study is based on the analysis of pressure distribution around a NACA 23015 airfoil section with a flap of length equal to the 30% of the cord at different angles of incidence and flap settings. The experiment was performed in a non –return wind tunnel at a Reynolds number of 4.4×〖10〗^5 and at a Mach number of 0.073. It is of note that increasing incidence will increase lift produced until the critical angle of attack, where the airfoil stalls; moreover, deploying a flap will…

    Words: 1520 - Pages: 7
  • What Are The Four Forces Of Train Power

    diesel engines can get to the mark of 125 mph. And now we have entered the era of very fast bullet trains that can go up to 200 mph. As the speed of train increases, new issues arises. One of the biggest problems is air resistance (popularly known as Drag Force). At low speeds, we can neglect air friction but at high speed, this factor can’t be overlooked. This air resistance can be the cause of wastage of power. It can overcome by making the shape of locomotives aerodynamically sleek from the…

    Words: 808 - Pages: 4
  • Orifice Plate Essay

    ORIFICE PLATE: Definition: An orifice plate is a device that is used for the measurement of flow rate for reducing pressure or for the restricting flow. An orifice plate is a thin plate with a hole in it, which is usually placed in a pipe. When a fluid (either liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice. But as the fluid is forced to converge to pass through the hole, the velocity increases & the fluid pressure decreases. Orifice Plate…

    Words: 917 - Pages: 4
  • Difference Between Fluid Dynamics And Bernoulli's Equation

    Fluid dynamics and Bernoulli's equation Moving fluids Fluid dynamics is the study of how fluids behave when they're in motion. This can get very complicated, so we'll focus on one simple case, but we should briefly mention the different categories of fluid flow. Fluids can flow steadily, or be turbulent. In steady flow, the fluid passing a given point maintains a steady velocity. For turbulent flow, the speed and or the direction of the flow varies. In steady flow, the motion can be represented…

    Words: 739 - Pages: 3
  • Analysis Of Friction Flow

    Friction loss is defined as the pressure loss or head loss that usually occurs in pipeline fluid flow because of the viscosity effect near the surface of the pipe. When the fluid flows along the pipeline, it produces frictional resistance thus results in loss of energy or total head loss of the fluid. Therefore, experiment was conducted to verify the Darcy Weisbach equation by determining the pressure loss along a horizontal pipe. Figure A below shows the diagram of friction loss along a…

    Words: 1369 - Pages: 6
  • Aircraft Propulsion Essay

    Introduction To understand aircraft propulsion it is important to understand the term propulsion first. Propulsion is a means of producing force required for movement of object. The propulsion system has some source of mechanical power and some means of using this power to generate force such as wheels, propellers, legs, etc. Nobody can precisely tell the origin of mankind’s desire to fly as it is lost in the distant past. There are legends of people strapping birdlike wings and jumping of a…

    Words: 1928 - Pages: 8
  • How Does Temperature Affect A Drag Force

    Drag force is an aerodynamic force which acts parallel and opposite to the motion of the object when it moves through a fluid. It is caused by friction and differences in air pressure. There are many factors can affect the magnitude of drag force as with aircraft lift. The drag depends linearly on the shape and size of the object moving through the air. The object’s cross-sectional shape determines the form drag which is created by the pressure variation around the object and affects the…

    Words: 834 - Pages: 4
  • Forged Rib Essay

    It gives it the aerodynamic shape, it carries a share of the loads, it helps to carry torsional loads, it acts as fuel tanks and allows inspection and maintenance. Using the skin to carry part of the loads is called stressed skin. Almost all aircraft have their wing structure made entirely in metal, or a mixture of metal and composite. The skin may be fixed to the internal structure by rivets or bonding. The volume between the spars is often used for storing fuel. An alternative to attaching…

    Words: 3662 - Pages: 15
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