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A wind tunnel diagram which shows a fan drawing air past a model aircraft. [2] The measurements taken from models are applicable to full-size objects. The effect of streamlining is made visible in a wind tunnel. Shaping the body to make it more streamlined reduces fuel consumption.
The first upright vacuum cleaner was invented in June 1908 in North Canton, Ohio, by department store janitor and occasional inventor James Murray Spangler.Spangler was an asthmatic, and suspecting the carpet sweeper he was using at work was the cause of his ailment, he created a basic suction-sweeper by mounting an electric fan motor on a carpet sweeper and then adding a soap box and a broom ...
The dirt is collected into a dust bag or a plastic bin. Vacuum cleaners, which are used in homes as well as in commercial settings, exist in a variety of sizes and types, including stick vacuums, handheld vacuums, upright vacuums, and canister vacuums. Specialized shop vacuums can be used to clean both solid debris and liquids.
For this reason most wind tunnels operate intermittently using energy stored in high-pressure tanks. These wind tunnels are also called intermittent supersonic blowdown wind tunnels (of which a schematic preview is given below). Another way of achieving the huge power output is with the use of a vacuum storage tank.
Haynes Owner's Workshop Manuals (commonly known as Haynes Manuals) is a series of manuals from the British publisher Haynes Publishing Group.The series focuses primarily on the maintenance and repair of automotive vehicles and covers a range of makes and models, with manuals for over 600 car and 225 motorcycle models.
The terms spindle and hub are sometimes used interchangeably with steering knuckle, but refer to different parts. The wheel and tire assembly attach to the hub or spindle of the knuckle where the tire/wheel rotates while being held in a stable plane of motion by the knuckle/suspension assembly.
The first human to fly in a vertical wind tunnel was Jack Tiffany in 1964 at Wright-Patterson Air Force Base located in Greene and Montgomery County, Ohio.. In 1982 Jean St-Germain, an inventor from Drummondville, Quebec, [2] sold a vertical wind tunnel concept to both Les Thompson and Marvin Kratter, both of whom went on to build their own wind tunnels.
Propulsive efficiency comparison for various gas turbine engine configurations. In the 1970s, Hamilton Standard described its propfan as "a small diameter, highly loaded multiple bladed variable pitch propulsor having swept blades with thin advanced airfoil sections, integrated with a nacelle contoured to retard the airflow through the blades thereby reducing compressibility losses and ...
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