This experiment focused on determining the lift coefficients and the pressure generated by a DU96 airfoil. These values were determined using both an experimental set up in the Virginia Tech Stability Wind Tunnel and a computational model in a program called XFOIL. The results from XFOIL will be used to compare the results from the wind tunnel to determine which parts of each are reasonable representations of what the airfoil would experience in free air. In the wind tunnel, the data will be corrected due to errors caused by Kevlar sheets used to create a more accurate airflow and more accurate readings. The experiments were both run at a Reynolds Number of two million and attack angles ranging from negative sixteen to positive sixteen degrees. Both the corrected and uncorrected results were compared and it was determined that the corrected results were reasonable, but did not make a large difference in small changes of the angle of attack. The airfoil was found to generate a lift coefficient of 1.49 in the computational model and 1.28 in the wind tunnel. Through these measurements, among others, it was determined that the data generated from both the wind tunnel and computational model were found to be similar and representative of a true airfoil in free air. For further analysis, it is recommended that the numerical results should be used to model the linear region between negative twelve degrees to thirteen degrees, while the experimental results should be used for the end regions. These regions in the models closely represent what would be expected of the airfoil in industry use.
2. Introduction
A recent development in airfoil design has seen a set of standardized airfoil designs which can be used in a wide array of applicati...
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... found that the maximum lift was 1.49. The positive and negative stall angles were also found to be similar in both tests being sixteen and fourteen from the numerical results and negative fourteen and negative twelve in the experimental test. From these two tests it was found that the numerical results were a better representation of the linear region between negative twelve degrees to thirteen degrees, while the experimental results were a good fit for the end regions. These regions in the models closely represent what would be expected of the airfoil in industry use. The lab showed that, while neither model is a perfect representation of how an airfoil will work in a free air environment, the combination of a corrected test in the wind tunnel and the computational analysis XFOIL program can be used to achieve the most accurate representation of what will happen.
Ever since I was little I was amazed at the ability for a machine to fly. I have always wanted to explore ideas of flight and be able to actually fly. I think I may have found my childhood fantasy in the world of aeronautical engineering. The object of my paper is to give me more insight on my future career as an aeronautical engineer. This paper was also to give me ideas of the physics of flight and be to apply those physics of flight to compete in a high school competition.
Aerodynamics is generally summarized in these 2 terms: “Lift against Weight” and “Thrust against Drag”. This basically means the amount of flight power generated must be equal to, or greater than the amount of weight of the airplane, and the amount of pushing generated, must be equal to or greater than the airs resistance. But the overall question, so far, is how is “Lift” and “Thrust” generated? The answer to how “Thrust” is generated is quite simple. Its sort of how a car would move, except in a much different way. Airplanes have 4 engines, which can each exert easily up to 200 PSI of air (pressure per square inch), composed of liquid fuel cylinders, and internal combustion (like a car). It also tops to 250 km per hour on the runway! But how “Lift” is generated is, the true definition of aerodynamics. The first thing you must consider to understand this is that the wing of the plane is specially designed, to force the air above the wing to rush faster, than the air beneath it. This works according to the “Bernoulli’s principle”. The reason air above the wing must be fast...
Boeing Ltd. has initiated a project that will improve the design aircraft. This design will provide a safer and more comfortable flight. In conjunction with this project, Batchel...
It all started when two brothers began to design wings for the new Nazi regime in Germany. With the outbreak of WWII in 1939, the Horton brothers continued their groundbreaking work under a shroud of secrecy. But while the Germans were developing their wings, a forty year old American aircraft designer called Jack Northrop was quietly working on a flying wing design of his own. Jack had been dreaming about flying wings since the 1920s , and had long held the belief that the way to success in wing design was by reducing the drag created by a tail and fuselage. In the end he got rid of the tail altogether.
In the project for science fair, we will be dropping whirligigs to test, which have the most aerodynamic structure. We will be recording the weight of the paper clips we put onto the whirligig. We will use the app that tracts how the whirligig falls. Which is called “Vernier Video Physics”. Then when we have enough data we will try to make the perfect paper airplane. To get the perfect paper airplane we must have the correct weight, the correct thrust, and the correct aerodynamics of the whirligig, this is why our project mostly consists of aerodynamics.
The strength of a woman is not measured by the impact that all her hardships in life have had on her; but the strength of a woman is measured by the extent of her refusal to allow those hardships to dictate her and who she becomes.”- C. JoyBell C.
From the Wright Flyer to the aircraft we fly today, they all started as a dream that later turned into a design. NASA is not sending astronauts into space at the moment, but that has not stopped the engineers at NASA from working on advanced aerodynamic designs and technologies that would help us achieve the dream of traveling farther, faster and higher. Improved materials such as carbon-fiber give an aircraft lighter weight, improved performance and lower fuel consumption. NASA’s newest design in carbon-fiber is called “PRSEUS” (Pultruded rod, Stitched, Efficient, Unitized Structure), a material that will be stronger than current carbon-fiber technology and will greatly reduce the need for rivets and other fasteners that lead to structural fatigue. NASA believes this new material will help Boeing achieve its goal of an aircraft of blended wing design (Sloan, 2011). Boeing has stated that tests for strength and performance on PRSEUS have exceeded their expectations. Boeing is using this new material in their X-48B, a small scale functional ble...
History Wing Introduction." Home Page for the Wright Brothers Aeroplane Company and Wright-brothers.org. 1999. Web. 10 Apr. 2011. .
The exploration has shown that with an increase in the length of a paper plane the distance would increase, but only to a certain point and at this point drag would overcome the lift and then the longer paper plane would begin to lose its distance flown. The parabola and function has shown that there is a maximum point where theoretically it is the best length for the body of the plane, and by using extrapolation I have also reinforced my hypothesis. The ideal length of the paper plane would be 17.3
The trials and tribulations of flight have had their ups and downs over the course of history. From the many who failed to the few that conquered; the thought of flight has always astonished us all. The Wright brothers were the first to sustain flight and therefore are credited with the invention of the airplane. John Allen who wrote Aerodynamics: The Science of Air in Motion says, “The Wright Brothers were the supreme example of their time of men gifted with practical skill, theoretical knowledge and insight” (6). As we all know, the airplane has had thousands of designs since then, but for the most part the physics of flight has remained the same. As you can see, the failures that occurred while trying to fly only prove that flight is truly remarkable.
Aviation industry deals with more than thousands of people and also spending millions of funds in order to meet the requirements, satisfy the necessities of people and to produce state-of-the-art aircraft. With its objective it is significant to consider the hazards involved and bring out an output with the least extent and under control risks to prevent any loss in terms of life and even profit.
Wilson, D. G., & Korakianitis, T. (1998). The design of high-efficiency turbomachinery and gas turbines (2nd ed.). Upper Saddle River, NJ: Prentice Hall.
One of the common designing techniques using in Architecture is parametric design. The term of parametric Design “is a methodology of using advanced visualization technology and mathematical algorithms to optimize structure and material form to advance resource efficiency and innovative solutions within the area of built environment” . However, the boundary line between Parametric design and the current computer-aided drafting or modelling approach is not very clear (Monedero, 2000) . However, it provides a precise formulation instead of complex relation between elements and subsystems. According to Schumacher 2008, there are three significant agendas could be beneficial to consider through this process. Firstly, move from single system differentiation to the scripted association of mutable subsystems. Secondly, the complex configuration. The third agenda is to allow the architecture environment to reconfigure and adapt itself in r...
The future of passenger aircraft and their manufacture has an amazing outlook. Every year, the brightest minds in aviation compile the greatest technological advances towards creating the safest and most economical aircraft on the planet. No detail is over looked, and the bottom dollar is the controlling factor. From private aircraft to public aircraft, space exploration and beyond, the future is bright for the passenger aircraft market, and everyone who purchases air travel should be excited to see how the industry unfolds. Let's kick this off!
A in November 1962, the British and French governments agreed to develop and build a supersonic aircraft. Each design presents an aerodynamic supersonic aircraft with a range of difficult problems, including two that have the highest interest powerplant installation and design of subsonic aircraft. supersonic speed because it is there are many configuration changes have been introduced, particularly in the areas of the nose and visor, rear wing and fuselage. the head of...