| 单词 | airfoil |
| 例句 | The P-51 Mustang was the first production plane to use one of the NACAs laminar airfoils, a factor that contributed to its superior performance. Hidden Figures 2016-09-06T00:00:00Z One of the NACAs great contributions to aerodynamics was a series of laminar flow airfoils, wing shapes designed to maximize the flow of smooth air around the wing. Hidden Figures 2016-09-06T00:00:00Z Calculating the pressure distribution over a particular airfoil at a transonic speed could easily take a month to complete for the most experienced of mathematicians. Hidden Figures 2016-09-06T00:00:00Z She reached for the control that in a gyropter would tilt the airfoil, and pushed the throttle forward, and at once the intention craft leapt into the air. The Amber Spyglass 2000-10-10T00:00:00Z By flapping their membraned wings, which are molded like airfoils to provide lift. Exhibition Review: Natural History Museum Explores the Wonders of Pterosaurs 2014-04-10T14:00:02Z Purchasing new machines would increase capacity to meet higher demand for the company's airfoils used in engine compressors, but Delic wants a long-term commitment from buyers. Analysis: Smaller aerospace suppliers scramble for titanium, workers in shadow of travel boom 2023-06-22T04:00:00Z A few miles away, Howmet, where my father worked next, made airfoils, rings, disks, forgings and other parts for airplanes, including the infamous F-35 fighter jet. Opinion | America’s Vanishing Kingdom 2022-04-05T04:00:00Z “I often say it’s like seeing a car parked on the side of the road with racing slicks and racing stripes and an airfoil on the back and a big engine,” Ray said. How COVID shots for kids help prevent dangerous new variants 2021-11-22T05:00:00Z “With the wind tunnel,” Stephen Wright says, “they were able to gather precise data on tiny airfoil designs, scraps of sheet metal they had lying around their bicycle shop.” Ingenuity's 'Wright Stuff': A Piece of the Wright Flyer Will Soar on Mars 2021-04-01T04:00:00Z Fewer new aircraft means fewer new jet engines, including those containing turbine frames and airfoils manufactured by Howmet. Ripple effects of downturn show pandemic’s early economic toll was just the beginning 2020-06-14T04:00:00Z The curved shape of an airplane wing—called an airfoil—alters the air pressure on either side of it and ultimately produces lift. The Force That Makes Planes Fly Could Fuel Rooftop Wind Power 2020-04-21T04:00:00Z Lift, as you will recall, is the result of the pressure differences between the top and bottom parts of an airfoil. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z At just 16, he began studying computational airfoil design at Duke University in North Carolina. No-one understood our idea, but now it's worth over $1bn 2019-11-03T04:00:00Z “There’s been debate about whether the skin flap was really an airfoil or used for another purpose,” Brusatte says. New batlike dinosaur was early experiment in flight 2019-05-08T04:00:00Z “The search for shock-free airfoils is sort of futile,” said Jonathan Goodman, a math professor and one of Morawetz’s colleagues at New York University at the Courant Institute for Mathematical Sciences. Cathleen Morawetz, mathematician with real-world impact, dies at 94 2017-08-15T04:00:00Z “The search for shock-free airfoils is sort of futile,” said Jonathan Goodman, a math professor and one of Dr. Morawetz’s colleagues at New York University at the Courant Institute for Mathematical Sciences. Cathleen Morawetz, Mathematician With Real-World Impact, Dies at 94 2017-08-11T04:00:00Z “The pressure differences exert the lift force on the airfoil, while the downward turning of the flow and the changes in flow speed sustain the pressure differences.” No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z Rolls-Royce will apply the technologies to jet engine airfoil components in engines produced at the company’s Indiana facilities. $24M effort aims to help develop new jet engine components 2017-06-19T04:00:00Z Pietro Rosa is a leading maker of compressor airfoils for gas turbines. Italian aerospace company acquires New England Airfoil 2016-02-20T05:00:00Z It might even alter its trajectory with an airfoil or mini compressed-gas thruster. Future Smartphone Could Fall Smartly Too 2014-12-19T05:00:00Z The company is already the global leader in jet engine airfoils. Alcoa Continues Strategic Shift Towards Value-Added Products With New Aerospace Facility 2014-06-03T04:00:00Z McLean’s complex explanation of lift starts with the basic assumption of all ordinary aerodynamics: the air around a wing acts as “a continuous material that deforms to follow the contours of the airfoil.” No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z CFM says its engine's architecture better protect airfoils inside from being damaged by sand and debris that degrade performance. Jet engine makers battle over performance 2013-06-16T19:01:36Z However, when hasuji is bad, “I believe the flow over the blade is separating in a much more chaotic way — if it were an airfoil, we would say it is stalled,” Brentner says. The Science of Swords: The Sound of Approaching Doom 2012-11-15T17:15:04.840Z Electricity is generated on the ground by converting the traction on the airfoil lines into electrical power. Italy's KITEnergy Converts High Altitude Winds to Electricity 2011-09-05T15:08:30Z With commercial aircraft manufacture, the single most difficult and exacting task is the construction of the wing and other airfoils. Amazon/Kindle Part 5: Is Outsourcing A National Security Issue? 2011-08-30T19:59:27Z But taken by itself, the principle of action and reaction also fails to explain the lower pressure atop the wing, which exists in that region irrespective of whether the airfoil is cambered. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z Optical lift is different from the aerodynamic lift created by an airfoil. Light Can Generate Lift 2010-12-06T16:06:00Z Pegasus was a winged horse," Rick commented, "And aren't those airfoils on that rocket section near the back of the shed? The Scarlet Lake Mystery I think that's where they first got the idea of trying out oval and circular airfoils. The Flying Saucers are Real In 1917, on the basis of his theory, Einstein designed an airfoil that later came to be known as a cat’s-back wing because of its resemblance to the humped back of a stretching cat. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z We know from streamlines that the air above the wing adheres closely to the downward curvature of the airfoil. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z “The airfoil affects the pressure over a wide area in what is called a pressure field,” McLean writes. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z But soon the rocket would enter the denser layers of air and the airfoils would take hold. The Scarlet Lake Mystery The second type was said to be a jet version of the Navy's circular airfoil "Flying Flapjack." The Flying Saucers are Real Bernoulli’s theorem attempts to explain lift as a consequence of the curved upper surface of an airfoil, the technical name for an airplane wing. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z To take advantage of these pressure differences, Einstein proposed an airfoil with a bulge on top such that the shape would increase airflow velocity above the bulge and thus decrease pressure there as well. No One Can Explain Why Planes Stay in the Air 2020-02-04T05:00:00Z When I talked with Gorman, I told him I was baffled by the idea of a light maneuvering through the skies with no airfoil to support it. The Flying Saucers are Real Then the airfoils took hold and Pegasus began to climb once more. The Scarlet Lake Mystery Some of this was with oval and round types of airfoils. The Flying Saucers are Real Let's say the airfoil was a rotating plastic disk, absolutely transparent. The Flying Saucers are Real |
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