Airfoil

A1 Lab Chordwise Pressure Distribution on an Aerofoil with a Flap Student Name: REUBEN LEW WAI CHOON Tutor: COLLIN GREATWOOD Date of Lab: 7TH NOVEMBER 2014 Summary A 23015 NACA aerofoil was tested in a wind tunnel with a Re number of 4.28 x 105 and Mach number of 0.07. The pressure distribution over the aerofoil was recorded and used to derive the coefficient of lift, pressure drag and pitching moment. Variations of these parameters with incidence and flap deflection were investigated. Thin…

Sir George Cayley (1773-1857) also used a whirling arm to measure the drag and lift of various airfoils. His whirling arm was 5 feet long and attained top speed between 10 to 20 feet per second. Francis Herbert Wenham (1824-1908), a council member of Aeronautical Society of Great Britain, addressed issues of wind tunnel by inventing, designing and…

Visualization Jintark Kim Purdue University ME309 lab Section 009 Abstract The purpose of this experiment is to visualize and analyze the flow patterns formed by objects in different conditions: cylinders in different diameter at different flow rate, and airfoils with different angle of attack at a constant flow rate. Properties of water at measured temperature and flow conditions for each trial were used to compute the Reynolds number. Red-dye ejector was used to traces the flow field…

Table 2.1: Parameters of tested water turbines (by Shionoet.al, 2002) Solidity (σ) Chord length (C) (mm) Blade inclination angle(ɸ)(°) Height (h) (mm) 0.20 62.8 43.7 300 0.30 94.2 43.7 300 0.40 125.7 43.7 300 0.50 157.1 43.7 300 0.40 125.7 50.0 374 0.40 125.7 60.0 544 Next, the effect of solidity σ on the water turbine characteristics was measured. Figure 2.1 shows a comparative analysis of torque characteristics for different solidity ratios at velocity 1.0 m/s, performed by Shionoet.…

Automated Manufacturing. I have had experience with Sandwich Construction, Secondary Bonding, Wet lay-up and VARTM which constructed airfoils of a section from an aircraft wing. Then applying knowledge from my previous courses, my thesis project developed to utilize Ultrasonic Guided Waves to detect flaws in composites and other material structures such as the airfoil that I constructed from Wet Lay-up Fabrication. I choose Ultrasonic Guided Waves detection of flaws in composite structures as my…

program and by us- ing UIUC Airfoil Coordinate Database. Airfoils are compared based on their Cmac, Clmax and Cl/Cd ratio (Fig. 6 ). For the longitudinal static stability of the flying- wing, airfoil’s moment around the aerodynamic center must be positive. The airfoils which ensure such moment characteristics are sometimes called as reflexed airfoils because they have negative camber near the trailing edge. The pitch up mo- ment of the reflexed airfoils will neutralize pitch…

According to the industry group Airlines for America, 14.2 million people are expected to travel during the 2015 Labor holiday weekend. With that number increasingly on the rise, air travel is booming and has just piqued business titan Warren Buffett’s interests. Warren Buffett’s illustrious Berkshire Hathaway Inc. has recently acquired Precision Castparts in an estimated 32 billion dollar deal that can only be written in the stars. In what is said to be the company’s largest merger,…

The first and foremost procedure for this lab is to be familiarized with the lab equipment. The principle components to be interacted in this lab is the work station, the wind tunnel, the AOA adjusting handle, the airfoil with tufts, and the wind tunnel frequency controller. Switch the control mode for the tunnel frequency controller to be LOC or local of local control would be used instead of remote control. Make sure that the tubes are connected in a way such that the air and pressure should…

escort the B-17s didn’t have enough fuel to stay with the B-17s for the whole trip. [1] So the B-17s pushed the need for a way to expand the storage of fuel on the fighters. The answer would be auxiliary droppable gas tanks under the airframe or airfoil of the fighter aircrafts if it was not for the B-17, the gas tanks would have had never become a reality. [1] Another issue with the formations was…

In Jonathan Swift`s A Modest Proposal, Swift expresses his soaring agitation with Ireland`s political leaders, the hypocrisy of the affluent, the despotism of the English, and the squalor in which he catches so many of his people living. Swift uses logos, visual imagery, and a desperate, satirical and serious tone to convey his thoughts. He demonstrates that a nation`s most significant problem can come from oppression in hopes that not only outsiders but that other Irish people will stand up and…