带你探索现代宇宙飞船设计背后的故事.docVIP

带你探索现代宇宙飞船设计背后的故事?? 2014-12-13 11:54:46|??分类： 科技 |??标签： |字号大中小?订阅 As?NASA?prepares?for?the?debut?首次表演test?测试flight?of?the?first?spaceship?in?more?than?40?years40年来?to?carry?astronauts?beyond?超过，越过Earth,?a?fleet舰队，船队，车队u，小河?of?privately私下的?owned?vehicles?is?in?新生事物，开发区?to?take?over?transportation?services接管运输服务?to?and?from?orbits?轨道closer?to?home.一家私人公司正在开发接管从地球到轨道的运输服务。 Whether?heading?to?the?International?Space?Station,which?flies?about?260?miles?above?the?planet,距离地球260英里?or?other?destinations,?the?journeys?begin?with?rocket?rides旅行从火箭发射起?that?have?enough?muscle?to?counteract抵消，组织，中和Earths?gravity?and?get?their?cargo船或者飞机上装载的货物?traveling?at?speeds?of?at?least?17,500?mph?to?achieve?orbit. More?diverse?不同的are?the?spacecraft?designs?the?companies?have?chosen,?reflecting?not?only?different?technical?solutions?to?the?challenges?of?flying?people?beyond?Earth,?but?also?their?alternative?visions?of?the?future. THINGS?WITH?WINGS 展翅飞翔 Capsules?太空舱may?be?simpler?to?fly?and?cheaper?to?build,?but?they?do?have?limitations.?SierraNevadas?winged?有翼的，迅速的Dream?Chaser,?for?example,?resembles像，类似，效仿?a?miniature?小型的，微型的space?shuttle航天飞机,?with?an?aerodynamically空气动力学?shaped?body?and?wings?so?it?can?fly?back?from?space,?rather?than?make?a?ballistic?plunge?跳水，突降，俯冲through?the?atmosphere?like?capsules. For?now目前,?Virgin?Galactics?six-passenger,?two-pilot?space?plane,?called?SpaceShipTwo,?will?be?limited?to?sub-orbital?flights?that?originate起源?from?and?return?to?the?same?location.?The?companys?first?vehicle?was?destroyed?during?a?fatal?致命的，毁灭性的test?flight?in Mojave,?Calif.,?on?Oct. 31.The?second?vehicle?is?under?construction.建设，建筑物?Point-to-point?suborbital?travel?点对点的亚轨道旅游would?require?a?different?design,?such?as?a?blunter?率直的，钝的，生硬的shape?to?better?handle?the?higher?speeds?and?heat?热度of?atmospheric?大气的re-entry,?and?a?more?powerful?rocket?engine.一个更加强大的火箭发动机 RISK?AND?REWARD Until?the?accident事情发生到现在,?SpaceShipTwo?was?on?track?to?在轨道上begin?the?worlds?first?commercial?passenger?spac