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\nhttps://archive.org/details/21stcenturyairpl0000idzi  \nFEATS of 21st-CENTURY.ENGINEERING21st-CENTURY  \nAIRPLANESEnslow Publishing101 W.23rd StreetSuite 240Lisa ldzikowskiNew York,NY 10011USA  \nenslow.com  \nPublished in 2019 by Enslow Publishing,LLC.101 W.23rd Street,Suite 240,New York,NY 10011  \nCopyright 2019 by Enslow Publishing,LLC.  \nAll rights reserved.  \nNo part of this book may be reproduced by any meanswithout the written permission of the publisher.  \n# Library of Congress Cataloging-in-Publication Data\n\nNames:Idzikowski,Lisa,author.  \nTitle:21st century airplanes/Lisa Idzikowski.  \nOther titles:Twenty-first century airplanes  \nDescription:New York,NY:Enslow Publishing,2019.|Series:Feats of 21st-century engineering |Includes bibliographical references and index.|Audience:3-6.  \nIdentifiers:LCCN 2017046147|ISBN 9780766096912(library bound)|ISBN9780766096929(pbk.)  \nSubjects:LCSH:Airplanes-21st century-Juvenile literature.|  \nAirplanes-History-Juvenile literature.  \nClassification:LCC TL547.1492019|DDC629.1333/34-dc23  \nLC record available at https://lccn.loc.gov/2017046147  \nPrinted in the United States of America  \nTo Our Readers:We have done our best to make sure all website addresses in thisbook were active and appropriate when we went to press.However,the authorand the publisher have no control over and assume no liability for the materialavailable on those websites or on any websites they may link to.Any comments orsuggestions can be sent by emailto customerservice@enslow.com.  \nPhoto Credits:Cover,p.1(technical drawing)pluie_r/Shutterstock.com;cover,p.1(Nighthawk stealth fighter)Erik Simonsen/Photographer's Choice/GettyImages;p.4 p_saranya/Shutterstock.com;pp.9,11 Bettmann/Getty Images;pp.12-13 Universal History Archive/Universal Images Group/Getty Images;p.17 Getty Images;pp.18-19 NASA/Lockheed Martin/Cover Images/Newscom;pp.21,33 ◎AP Images;p.23 Marc Garanger/Corbis Historical/Getty Images;pp.26-27 VCG/Visual China Group/Getty Images;p.29 Tom Tschida/NASA/SIPA/Newscom;pp.30-31 Power Sport Images/Getty Images;pp.36-37 Airbus/CoverImages/Newscom;pp.38-39 NASA/MIT/Aurora Flight Sciences;p.40 US AirForce Photo/Alamy Stock Photo.  \n# Introduction\n\n51 How Did Humans Learn to Fly?       72 The Need for Speed          15254 The Future of Airplanes         35Chronology                \n3 Greener and Cleaner  \n43Bibliography              44Glossary                 \n46Further Reading            47Index48  \nThousands of people experience the thrillof flight every day.The planes of the futurewill make soaring above the clouds evenmore amazing!  \nIntroduction  \nlying machines have an interesting history.Throughout time,people imagined being able to fly.They observed birds in flight.They also studied windmills.Early on,the Chinese flew kites.LaterItalian artist and inventor Leonardo da Vinci drew detailed designsof flying machines.Years passed as experimentation blossomed inmany areas of science and mathematics.Scientists and engineersidentified and understood basic theories of motion.They calculatedthe mathematical formulas that would help make the science of flightpossible in the future.  \nAt the time of the Industrial Revolution (about 1760-1840)manynew scientific and technological inventions appeared.Like engineerstoday,people of the time began to ask questions,define problems,and design and test possible solutions.Many of the pioneers ofaviation were simply interested in flight.They were handy with toolsand possessed a spirit of invention.Most designed,built,and testedtheir own model flying machines.Often these early models did notlive up to expectations.What did these clever individuals do then?Instead of quitting,many worked harder.They found ways to improvetheir crafts through additional testing,data collection,and redesign.  \nDuring the mid-to late 1800s,several individuals dedicated theirwork to searching for ways to fly.They designed and buil","cbCaiali70h6BUZ9","https://ap.wps.com/l/cbCaiali70h6BUZ9","pdf",4095630,56,"English","# Introduction\n## How Did Humans Learn to Fly?\n## Greener and Cleaner\n## The Need for Speed\n## The Future of Airplanes\n## Chronology\n## Bibliography\n## Glossary\n## Further Reading\n## Index","[{\"question\":\"How did people first learn to fly, according to the introduction?\",\"answer\":\"People studied birds, observed wind and mechanics, and experimented with kites and early flying-machine designs, including work inspired by figures like Leonardo da Vinci.\"},{\"question\":\"What was the significance of the Wright brothers’ 1903 flight?\",\"answer\":\"After decades of attempts, Orville and Wilbur Wright achieved the first successful airplane flight, which helped launch aeronautics as an expanding field and industry.\"},{\"question\":\"Which engineering areas does the book say modern airplane design incorporates?\",\"answer\":\"It describes incorporation of aerodynamics, propulsion, materials, structures, stability, and control into the aircraft design process.\"}]","21st century airplanes - Introduction - and Overview | PDF",1791875835,86]