High Power Orbit Transfer Vehicle
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High Power Orbit Transfer Vehicle
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Author : Frank S. Gulczinski, III
language : en
Publisher:
Release Date : 2003-07-01
High Power Orbit Transfer Vehicle written by Frank S. Gulczinski, III and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-01 with categories.
The Air Force Research Laboratory Propulsion Directorate's Spacecraft Propulsion Branch has carried out an in-house propulsion trade study and contracted for two other propulsion design studies from Virginia Tech University and Aerophysics, Inc. to examine propulsion requirements for a high-power orbit transfer vehicle using thin-film voltaic solar array technologies under development by the Space Vehicles Directorate (dubbed PowerSail). The in-house study assumed a 100-kilowatt array and performed the most in-depth analysis of the forces perturbing the array and of propulsion options to counteract these forces. The dominant propulsion requirements on PowerSail will be to counter the effects of radiation pressure and atmospheric drag. The thruster options studied included the 100-watt Resistojet, low-power Arcjet, 200-watt Hall thruster, small-ion engine, pulsed-plasma thruster, AFRL micro-PPT, colloid thruster, and the 60-watt FEEP. This study recommended a combination of the Busek BHT-200 Hall thruster and the AFRL MicroPPT for a near-term mission. The Virginia Tech University design study looked at a 50-kilowatt array and provided a more comprehensive look at the entire spacecraft system. They chose to employ pulsed- plasma thrusters to meet their propulsion needs, thus minimizing complexity and integration issues rather than system mass. Aerophysics, Inc., developed a dynamic optimization code to analyze alternatives for propulsion on a 500- kilowatt array. They investigated seven canonical electric propulsion technologies: Teflon (TM) pulsed-plasma thruster, hydrazine Resistojet, hydrazine Arcjet, ammonia Arcjet, hydrogen Arcjet, xenon Hall thruster, and xenon ion engine. The performance specifications for each technology, based on numerous studies, are provided. Based on this code, the optimal propulsion system was determined to be a set of notional low-power ion engines. (43 tables, 121 figures)
High Power Orbit Transfer Vehicle
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Author :
language : en
Publisher:
Release Date : 2003
High Power Orbit Transfer Vehicle written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
The Air Force Research Laboratory Propulsion Directorate's Spacecraft Propulsion Branch has carried out an in-house propulsion trade study and contracted for two other propulsion design studies from Virginia Tech University and Aerophysics, Inc. to examine propulsion requirements for a high-power orbit transfer vehicle using thin-film voltaic solar array technologies under development by the Space Vehicles Directorate (dubbed PowerSail). The in-house study assumed a 100-kilowatt array and performed the most in-depth analysis of the forces perturbing the array and of propulsion options to counteract these forces. The dominant propulsion requirements on PowerSail will be to counter the effects of radiation pressure and atmospheric drag. The thruster options studied included the 100-watt Resistojet, low-power Arcjet, 200-watt Hall thruster, small-ion engine, pulsed-plasma thruster, AFRL micro-PPT, colloid thruster, and the 60-watt FEEP. This study recommended a combination of the Busek BHT-200 Hall thruster and the AFRL MicroPPT for a near-term mission. The Virginia Tech University design study looked at a 50-kilowatt array and provided a more comprehensive look at the entire spacecraft system. They chose to employ pulsed-plasma thrusters to meet their propulsion needs, thus minimizing complexity and integration issues rather than system mass. Aerophysics, Inc., developed a dynamic optimization code to analyze alternatives for propulsion on a 500-kilowatt array. They investigated seven canonical electric propulsion technologies: Teflon (TM) pulsed-plasma thruster, hydrazine Resistojet, hydrazine Arcjet, ammonia Arcjet, hydrogen Arcjet, xenon Hall thruster, and xenon ion engine. The performance specifications for each technology, based on numerous studies, are provided. Based on this code, the optimal propulsion system was determined to be a set of notional low-power ion engines. (43 tables, 121 figures).
Launch Vehicle And Power Level Impacts On Electric Geo Insertion
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Author : Steven R. Oleson
language : en
Publisher:
Release Date : 1996
Launch Vehicle And Power Level Impacts On Electric Geo Insertion written by Steven R. Oleson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
A Transportronic Solution To The Problem Of Interorbital Transportation
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-17
A Transportronic Solution To The Problem Of Interorbital Transportation written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-17 with categories.
An all-electronic transportation system described by the term 'transportronics' is examined as a means of solving the current problem of the high cost of transporting material from low-Earth orbit (LEO) to geostationary orbit (GEO). In this transportation system, low cost electric energy at the surface of the Earth is efficiently converted into microwave power which is then efficiently formed into a narrow beam which is kept incident upon the orbital transfer vehicles (OTV's) by electronic tracking. The incident beam is efficiently captured and converted into DC power by a device which has a very high ratio of DC power output to its mass. Because the mass of the electric thruster is also low, the resulting acceleration is unprecedented for electric-propelled vehicles. However, the performance of the system in terms of transit times from LEO to GEO is penalized by the short time of contact between the beam and the vehicle in low-Earth orbits. This makes it necessary to place the Earth based transmitters and the vehicles in the equatorial plane thus introducing many geopolitical factors. Technically, however, such a system as described in the report may out-perform any other approach to transportation in the LEO to GEO regime. The report describes and analyzes all portions of the beamed microwave power transmission system in considerable detail. An economic analysis of the operating and capital costs is made with the aid of a reference system capable of placing about 130,000 kilograms of payload into GEO each year. More mature states of the system are then examined, to a level in which 60,000 metric tons per year could be placed into GEO. Brown, William C. Unspecified Center ION PROPULSION; MICROWAVE POWER BEAMING; ORBIT TRANSFER VEHICLES; PAYLOAD TRANSFER; SPACE TRANSPORTATION; SPACECRAFT PROPULSION; ANTENNA DESIGN; ECONOMIC ANALYSIS; LOW COST; LOW EARTH ORBITS; MICROWAVE ANTENNAS; OPERATING COSTS; RADIO TRANSMITTERS; RECTENNAS; SPACECRAFT POWER SUPPLIES; TRANSIT TIM...
Orbit Transfer Vehicle Engine Study Volume 2
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Author :
language : en
Publisher:
Release Date : 1990
Orbit Transfer Vehicle Engine Study Volume 2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
The objective of the Orbit Transfer Vehicle (OTV) engine study was to provide para. metric performance, engine programmatic, and cost data on the complete propulsive spectrum that is available for a variety of high energy, space maneuvering missions. The OTV is planned as a high performance propulsive stage which can be used, in conjunction with the Space Shuttle, to deliver/support large payloads/platforms to geosynchronous earth orbit (GEO) and other orbits beyond low earth orbit (LEO). Its role is similar to that of the "full capability" Space Tug defined in 1974 with the primary, primary difference that the OTV will eventually be man%rated. This engine study was conducted to satisfy a set of technical requirements derived around the OTV system to provide both engine system parametric data and preliminary engine designs.
High Power Laser Propulsion
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Author : Yuri A. Rezunkov
language : en
Publisher: Springer Nature
Release Date : 2021-08-25
High Power Laser Propulsion written by Yuri A. Rezunkov and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-25 with Science categories.
This book gives an in-depth analysis of the physical phenomena of thrust production by laser radiation, as well as laser propulsion engines, and laser-propelled vehicles. It brings together into a unified context accumulated up-to-date information on laser propulsion research, considering propulsion phenomena, laser propulsion techniques, design of vehicles with laser propulsion engines, and high-power laser systems to provide movement for space vehicles. In particular, the reader will find detailed coverage of: designs of laser propulsion engines, operating as both air-breathing and ramjet engines to launch vehicles into LEOs; Assembly of vehicles whereby laser power from a remote laser is collected and directed into a propulsion engine; and, the laser-adaptive systems that control a laser beam to propel vehicles into orbits by delivering laser power through the Earth's atmosphere. This book is essential reading for researchers and professionals involved in laser propulsion.
Technology For Large Space Systems
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Author :
language : en
Publisher:
Release Date : 1983
Technology For Large Space Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Large space structures (Astronautics) categories.
Vehicle For Space Transfer And Recovery Vstar
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-17
Vehicle For Space Transfer And Recovery Vstar written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-17 with categories.
The Vehicle Space Transfer and Recovery (VSTAR) system is designed as a manned orbital transfer vehicle (MOTV) with the primary mission of Satellite Launch and Repair (SLR). VSTAR will provide for economic use of high altitude spaceflight for both the public and private sector. VSTAR components will be built and tested using earth based facilities. These components will then be launched using the space shuttle, into low earth orbit (LEO) where it will be constructed on a U.S. built space station. Once in LEO the vehicle components will be assembled in modules which can then be arranged in various configurations to perform the required missions. Unspecified Center...
Design Considerations For Space Transfer Vehicles Using Solar Thermal Propulsion
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Author :
language : en
Publisher:
Release Date : 1995
Design Considerations For Space Transfer Vehicles Using Solar Thermal Propulsion written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
The economical deployment of satellites to high energy earth orbits is crucial to the ultimate success of this nation's commercial space ventures and is highly desirable for deep space planetary missions requiring earth escape trajectories. Upper stage space transfer vehicles needed to accomplish this task should ideally be simple, robust, and highly efficient. In this regard, solar thermal propulsion is particularly well suited to those missions where high thrust is not a requirement. The Marshall Space Flight Center is, therefore, currently engaged in defining a transfer vehicle employing solar thermal propulsion capable of transferring a 450 kg payload from Low Earth Orbit (LEO) to Geostationary Earth Orbit (GEO) using a Lockheed Launch Vehicle (LLV3). The current design uses liquid hydrogen as the propellant and employs two inflatable elliptical off-axis parabolic solar collectors to focus sunlight onto a tungsten/rhenium black body type absorber. The concentration factor on this design is projected to be approximately 1,800:1 for the primary collector and 3:1 for the secondary collector for an overall concentration factor of nearly 5400:1. The engine, which is about twice as efficient as the best currently available chemical engines, produces 8.9 N of thrust with a specific impulse (Isp) of 860 sec. Transfer times to GEO are projected to be on the order of one month.
Space Transfer With Ground Based Laser Electric Propulsion
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Author : Geoffrey A. Landis
language : en
Publisher:
Release Date : 1993
Space Transfer With Ground Based Laser Electric Propulsion written by Geoffrey A. Landis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.