原版英语RAZ 教案Joe Kittinger - An Unsung Hero.pdf
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1、www.readinga-Joe Kittinger:An Unsung HeroA Reading AZ Level W Leveled BookWord Count:1,622Joe Kittinger:An Unsung HeroVisit www.readinga- for thousands of books and materials.Written by Ned JensenLEVELED BOOK WWritten by Ned JensenJoe Kittinger:An Unsung HeroLevel W Leveled Book Learning AZWritten b
2、y Ned JensenAll rights reserved.www.readinga-Photo Credits:Front cover,pages 5,7(all),8,10,11,16(center):courtesy of U.S.Air Force;back cover,title page,pages 11,15,16(top),17,19,20,22,24:courtesy of the family of Joseph Kittinger;page 3:AP Images;page 4(top left,top center,top right):courtesy of Ma
3、rshall Space Flight Center/NASA;page 4(center left,bottom left):courtesy of NASA;page 12:U.S.Govt Airforce/National Geographic Stock;page 14:Ross D.Franklin/AP Images;page 18:Corbis;page 21:courtesy of the National Museum of the U.S.Air Forcewww.readinga-Joe Kittinger:An Unsung HeroCorrelationLEVEL
4、WS4040Fountas&PinnellReading RecoveryDRASpecial thanks to Colonel and Mrs.Kittinger for their contributions to the manuscript and providing photographs from their personal archive.34Table of ContentsIntroduction.4Jumping Joe .6Joe Sets Another Record.14More Records for Joe .19Conclusion .21Glossary
5、.23Index .24Space exploration has many heroes.If you were asked to name a few,you might mention Yuri Gagarin,the first person to travel into space,or Neil Armstrong,the first person to walk on the moon.Or you might name Alan Shepard,John Glenn,or Sally Ride,all well-known American astronauts.But you
6、 probably would not include Joe Kittinger on your list.He is an unsung hero.However,many people regard Joe as a true pioneer of space exploration.Sally RideAlan ShepardJohn GlennYuri GagarinNeil ArmstrongIntroductionJoe Kittinger:An Unsung Hero Level W56Joe Kittinger was neither an ordinary space ex
7、plorer nor an actual astronaut or cosmonaut.However,what Joe did probably took more courage than that of any astronaut who climbed into a space shuttle or capsule and rocketed into space.What did Joe do that was so extraordinary?Lets find out.Jumping JoeBefore humans were zooming into space in rocke
8、t-propelled capsules,Joe Kittinger was flying high-altitude balloons into the very edge of space.It was all part of a U.S.Air Force project called Project Manhigh.The projects purpose was to test what would happen to humans who spent a long time in conditions similar to those found in outer space.In
9、 June 1957,Joe made his first balloon flight into the stratosphere and reached an altitude of 29,565 meters(97,000 ft).He was aloft for almost seven hours.The information gathered from high-altitude balloon flights by Joe and others was invaluable to NASAs planning for the first human space flights.
10、Later,Joe was the engineer for Project Excelsior,a U.S.Air Force project to develop safe ways to escape from high-altitude aircraft and spaceships.In August 1960,a year before Russian cosmonaut Yuri Gagarin became the first person considered to travel into space,Joe Kittinger accomplished an equally
11、 incredible feat.He rode in a balloon filled with helium gas to a distance of 31,333 meters(102,800 ft)above Earth.A typical passenger jet flies at about 9,144 meters(30,000 ft)above Earth.Joe went more than three times higher than passenger jets flyin a balloon!Joe KittingerJoe Kittinger:An Unsung
12、Hero Level W78Okay,so thats pretty incredible,isnt it?But get thisnext,Joe stepped out of the balloon!At 31,333 meters(102,800 ft)above Earth,he stepped out of the open gondola into the emptiness of space.He wasnt going for a space walk.Instead,he jumped out and began falling back to Earth.Do You Kn
13、ow?Joe piloted 93 different types of aircraft that included planes and balloons.He flew 5,300 hours in jet-plane flight and about 1,000 hours flying combat missions.He parachuted 101 times,with three of those jumps from balloons at very high altitude.Joe Kittinger:An Unsung Hero Level W910Before we
14、learn what happened to Joe,lets think about conditions at 31,333 meters(102,800 ft)above Earth.At that altitude,the air is very thin,which makes it next to impossible to inhale enough oxygen with each breath.Joe carried a supply of oxygen,which allowed him to breathe comfortably.However,it is also i
15、ncredibly cold that high above Earth.At the 32-kilometer(20 mi)distance Joe traveled in his balloon,he was deep into a layer of the atmosphere called the stratosphere.This layer stretches from 9.5 to 48 kilometers(about 630 mi)above Earth.So Joe was floating well into the stratosphere,where temperat
16、ures can be as low as 68 degrees Celsius(90F).To keep himself warm in these hostile conditions,Joe wore several layers of clothing.He also needed to wear a special pressurized suit to prevent his body from exploding and his blood from boiling.The danger of this happening was caused by the low-pressu
17、re conditions of space,where very little air exists.In space,pressure inside the body is much greater than the pressure from the outside atmosphere,which pushes against the body.This can happen starting at an altitude of 18,900 meters(62,000 ft),which is known as Armstrongs Limit.Despite all the mea
18、sures taken to keep Joe safe,he experienced pain in his right hand when the pressurized glove he wore developed a leak and lost pressure.Joe enters the balloon gondola in a pressurized suit.50 40 30 20 10 0 56 90 70 50 30 10 0 MesosphereHeight of Joe Kittingers JumpStratosphereTroposphereGround Leve
19、lKilometersMilesJoe Kittinger:An Unsung Hero Level W1112Lets continue to follow Joe in his amazing fall through the atmosphere.He was being pulled by gravity back home to Earth.As he fell,his body accelerated,reaching speeds of over 965 kilometers(600 mi)per hour.Some experts say he even may have br
20、oken the sound barrier.If so,he was the only person ever to break the sound barrier unaided or unprotected by any sort of craft for over fifty years.After falling for 16 seconds,Joes small,1.8-meter(6 ft)diameter drogue parachute opened and slowed his fall.A drogue parachute is elongated and thinner
21、 than a regular parachute.This design stops the parachute from being torn apart during high-speed falls from high altitudes.Joe fell for another 4 minutes and 36 seconds before his main parachute opened,allowing him to drift slowly down to Earth.Joe had proven that a human could survive in near spac
22、elike conditions outside a spacecraft or aircraft after an emergency escape.Math MinuteWhen Joe jumped from his high-altitude balloon at 31,000 meters,he was in a free fall for 4 minutes and 36 seconds before his parachute opened.He was at 5,500 meters when the chute opened.What was his average spee
23、d in meters per second during his free fall?Answer:about 95 meters per secondJoe Kittinger:An Unsung Hero Level W1314You might ask whether Joe was really in spacetechnically speaking,he was not.Space really does not have a well-defined border.Its not like stepping across the border of one country in
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