12.26 | A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 скачать в хорошем качестве

12.26 | A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000

A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of lift per square meter of wing. (The fact that a wing has a top and bottom surface does not double its area.) (a) At takeoff, an aircraft travels at 60.0 m/s, so that the air speed relative to the bottom of the wing is 60.0 m/s. Given the sea level density of air to be 1.29 kg/m3 , how fast must it move over the upper surface to create the ideal lift? (b) How fast must air move over the upper surface at a cruising speed of 245 m/s and at an altitude where air density is one-fourth that at sea level? (Note that this is not all of the aircraft’s lift—some comes from the body of the plane, some from engine thrust, and so on. Furthermore, Bernoulli’s principle gives an approximate answer because flow over the wing creates turbulence.) OpenStax™ is a registered trademark, which was not involved in the production of, and does not endorse, this product. If you don't have the OpenStax™ textbook, "College Physics" textbook, here is a link in which you can download it for FREE! https://d3bxy9euw4e147.cloudfront.net... SUBSCRIBE if you'd like to see more solutions for your textbook!    / @glasertutoring   Want us as your private tutor? Get started with your FREE initial assessment! https://glasertutoring.com/contact/ #BernoulliEquation #FluidDynamics #OpenStaxPhysics