logging in or signing up Space Elevator jesudass Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1527 Category: Science & Tech.. License: All Rights Reserved Like it (2) Dislike it (0) Added: December 23, 2009 This Presentation is Public Favorites: 2 Presentation Description No description available. Comments Posting comment... By: RonPotter (8 month(s) ago) mail me a copy of this presentation to potterron54@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: prajwalnation2 (14 month(s) ago) please please mail me a copy of this presentation to ...prajwalnation2@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: smitha_patel (15 month(s) ago) can you plz send a copy of this presentation to dimplekapoor13@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: smitha_patel (15 month(s) ago) can i have a copy of this presentation Saving..... Post Reply Close Saving..... Edit Comment Close By: smitha_patel (15 month(s) ago) can you plz send a copy of this presentation Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Slide 1: (AN AUTONOMOUS INSTITUTION AFFILIATED TO ANNA UNIVERSITY COIMBATORE) A PRESENTATION ON THE SPACE ELEVATOR AND ITS CONCEPT. BY M.VARUN KANTH(09ME64) SPACE ELEVATOR : SPACE ELEVATOR INTRODUCTION : INTRODUCTION A new space transportation system being developed could make travel to Geostationary Earth Orbit (GEO) a daily event and transform the global economy. It is a fiction turning fact proposed by Arthur.C.Clarke’s novel THE FOUNTAINS OF PARADISE. SOARING HIGH : SOARING HIGH The space elevator would be approximately 62,000 miles (100,000 km) high. If built, the ribbon will represent a modern world wonder, and will be the tallest structure ever built.The space elevator would be 180,720 times taller than the CN Tower! In fact, it would equal nearly a fourth of the distance to the moon, which orbits the Earth at 237,674 miles (382,500 km). COMPONENTS : CABLE BASE STATION CLIMBERS POWERING CLIMBERS COUNTERWEIGHT COMPONENTS CABLE : CABLE The cable must be made of a material with a large tensile strength/mass ratio. A newly discovered type of carbon nanotube called the colossal carbon tube may be strong and light enough to support a space elevator. a space elevator. In addition, it has been fabricated in lengths on the scale of centimeters, a headstart on the thousands of kilometers needed for a space elevator. CLIMBERS : CLIMBERS The robotic lifter will use the ribbon to guide its ascent into space. Traction-tread rollers on the lifter would clamp on to the ribbon and pull the ribbon through, enabling the lifter to climb up the elevator. ANCHOR STATION : ANCHOR STATION The base station designs typically fall into two categories—mobile and stationary. Mobile stations are typically large oceangoing vessels. Stationary platforms would generally be located in high-altitude locations, such as on top of mountains, or even potentially on high towers. The space elevator will originate from a mobile platform in the equatorial Pacific, which will anchor the ribbon to Earth. POWERING CLIMBERS : POWERING CLIMBERS The proposed method is laser power beaming, using megawatt powered free electron or solid state lasers in combination with adaptive mirrors approximately 10 m wide and a photovoltaic array on the climber tuned to the laser frequency for efficiency. A major obstacle for any climber design is the dissipation of the substantial amount of waste heat generated due to the less than perfect efficiency of any of the power methods. COUNTERWEIGHT : COUNTERWEIGHT The idea which has gained more support in recent years due to the relative simplicity of the task and the fact that a payload that went to the end of the counterweight-cable would acquire considerable velocity relative to the Earth, allowing it to be launched into interplanetary space. Early plans for the space elevator involved capturing an asteroid and using it as a counterweight. However, more recent plans like those of LiftPort and the Institute for Scientific Research (ISR) include the use of a man-made counterweight. In fact, the counterweight might be assembled from equipment used to build the ribbon including the spacecraft that is used to launch it. EXTRATERRESTRIAL LIFTS : EXTRATERRESTRIAL LIFTS A space elevator could also be constructed on other planets, asteroids and moons. Exotic materials might not be required to construct such an elevator. A tether on martian moon Phobos may assist in journeys between Earth and Mars. A lunar space elevator can possibly be built with currently available technology about 50,000 kilometers long extending though the Earth-Moon L1 point from an anchor point near the center of the visible part of Earth's moon. SAFETY ISSUES : SAFETY ISSUES A space elevator would present a navigational hazard, both to aircraft and spacecraft. Aircraft could be diverted by air-traffic control restrictions.. Impacts by space objects such as meteoroids and micrometeorites pose a more difficult problem, because the potential of a strand break to cause a failure cascade is, according to Tom Nugent, the Research Director of LiftPort Inc., "A potential show-stopper for construction of the space elevator [that] has not yet been adequately addressed." . ECONOMICS : ECONOMICS With a space elevator, materials might be sent into orbit at a fraction of the current cost. As of 2000, conventional rocket designs cost about $11,000 per kilogram for transfer to low earth or geostationary orbit.Current proposals envision payload prices starting as low as $220 per kilogram. IMPACT : IMPACT The space elevator could replace the space shuttle as the main space vehicle, and be used for satellite deployment, defense, tourism and further exploration. To the latter point, a spacecraft would climb the ribbon of the elevator and then would launch toward its main target once in space. This type of launch would require less fuel than would normally be needed to break out of Earth's atmosphere. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Space Elevator jesudass Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1527 Category: Science & Tech.. License: All Rights Reserved Like it (2) Dislike it (0) Added: December 23, 2009 This Presentation is Public Favorites: 2 Presentation Description No description available. Comments Posting comment... By: RonPotter (8 month(s) ago) mail me a copy of this presentation to potterron54@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: prajwalnation2 (14 month(s) ago) please please mail me a copy of this presentation to ...prajwalnation2@gmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: smitha_patel (15 month(s) ago) can you plz send a copy of this presentation to dimplekapoor13@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: smitha_patel (15 month(s) ago) can i have a copy of this presentation Saving..... Post Reply Close Saving..... Edit Comment Close By: smitha_patel (15 month(s) ago) can you plz send a copy of this presentation Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Slide 1: (AN AUTONOMOUS INSTITUTION AFFILIATED TO ANNA UNIVERSITY COIMBATORE) A PRESENTATION ON THE SPACE ELEVATOR AND ITS CONCEPT. BY M.VARUN KANTH(09ME64) SPACE ELEVATOR : SPACE ELEVATOR INTRODUCTION : INTRODUCTION A new space transportation system being developed could make travel to Geostationary Earth Orbit (GEO) a daily event and transform the global economy. It is a fiction turning fact proposed by Arthur.C.Clarke’s novel THE FOUNTAINS OF PARADISE. SOARING HIGH : SOARING HIGH The space elevator would be approximately 62,000 miles (100,000 km) high. If built, the ribbon will represent a modern world wonder, and will be the tallest structure ever built.The space elevator would be 180,720 times taller than the CN Tower! In fact, it would equal nearly a fourth of the distance to the moon, which orbits the Earth at 237,674 miles (382,500 km). COMPONENTS : CABLE BASE STATION CLIMBERS POWERING CLIMBERS COUNTERWEIGHT COMPONENTS CABLE : CABLE The cable must be made of a material with a large tensile strength/mass ratio. A newly discovered type of carbon nanotube called the colossal carbon tube may be strong and light enough to support a space elevator. a space elevator. In addition, it has been fabricated in lengths on the scale of centimeters, a headstart on the thousands of kilometers needed for a space elevator. CLIMBERS : CLIMBERS The robotic lifter will use the ribbon to guide its ascent into space. Traction-tread rollers on the lifter would clamp on to the ribbon and pull the ribbon through, enabling the lifter to climb up the elevator. ANCHOR STATION : ANCHOR STATION The base station designs typically fall into two categories—mobile and stationary. Mobile stations are typically large oceangoing vessels. Stationary platforms would generally be located in high-altitude locations, such as on top of mountains, or even potentially on high towers. The space elevator will originate from a mobile platform in the equatorial Pacific, which will anchor the ribbon to Earth. POWERING CLIMBERS : POWERING CLIMBERS The proposed method is laser power beaming, using megawatt powered free electron or solid state lasers in combination with adaptive mirrors approximately 10 m wide and a photovoltaic array on the climber tuned to the laser frequency for efficiency. A major obstacle for any climber design is the dissipation of the substantial amount of waste heat generated due to the less than perfect efficiency of any of the power methods. COUNTERWEIGHT : COUNTERWEIGHT The idea which has gained more support in recent years due to the relative simplicity of the task and the fact that a payload that went to the end of the counterweight-cable would acquire considerable velocity relative to the Earth, allowing it to be launched into interplanetary space. Early plans for the space elevator involved capturing an asteroid and using it as a counterweight. However, more recent plans like those of LiftPort and the Institute for Scientific Research (ISR) include the use of a man-made counterweight. In fact, the counterweight might be assembled from equipment used to build the ribbon including the spacecraft that is used to launch it. EXTRATERRESTRIAL LIFTS : EXTRATERRESTRIAL LIFTS A space elevator could also be constructed on other planets, asteroids and moons. Exotic materials might not be required to construct such an elevator. A tether on martian moon Phobos may assist in journeys between Earth and Mars. A lunar space elevator can possibly be built with currently available technology about 50,000 kilometers long extending though the Earth-Moon L1 point from an anchor point near the center of the visible part of Earth's moon. SAFETY ISSUES : SAFETY ISSUES A space elevator would present a navigational hazard, both to aircraft and spacecraft. Aircraft could be diverted by air-traffic control restrictions.. Impacts by space objects such as meteoroids and micrometeorites pose a more difficult problem, because the potential of a strand break to cause a failure cascade is, according to Tom Nugent, the Research Director of LiftPort Inc., "A potential show-stopper for construction of the space elevator [that] has not yet been adequately addressed." . ECONOMICS : ECONOMICS With a space elevator, materials might be sent into orbit at a fraction of the current cost. As of 2000, conventional rocket designs cost about $11,000 per kilogram for transfer to low earth or geostationary orbit.Current proposals envision payload prices starting as low as $220 per kilogram. IMPACT : IMPACT The space elevator could replace the space shuttle as the main space vehicle, and be used for satellite deployment, defense, tourism and further exploration. To the latter point, a spacecraft would climb the ribbon of the elevator and then would launch toward its main target once in space. This type of launch would require less fuel than would normally be needed to break out of Earth's atmosphere.