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Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Launch vehicles (Astronautics)
Languages : en
Pages : 46
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Book Description
Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Launch vehicles (Astronautics)
Languages : en
Pages : 46
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428974741
Category :
Languages : en
Pages : 38
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Book Description
Author: United States Accounting Office
Publisher: Createspace Independent Publishing Platform
ISBN: 9781985288874
Category :
Languages : en
Pages : 38
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Book Description
NSIAD-99-176 Space Transportation: Status of the X-33 Reusable Launch Vehicle Program
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
The purpose of the $ 1.3 billion X-33 Program, cosponsored by the National Aeronautics and Space Administration (NASA) and the Lockheed Martin Corporation, is to develop and demonstrate advanced technologies and techniques needed for future reusable launch vehicles (RLV), including lightweight internal fuel tanks, advanced rocket engines, a durable heat shield, and rapid-turnaround, low-cost operations. The X-33 vehicle will be a half-scale model of Lockheed Martin's planned single-stage-to- orbit (SSTO) Venture Star RLV, an operational vehicle that will be based on and developed after the X-33. Lockheed Martin and NASA will base the decision to proceed with developing the Venture Star, in part, on the results of the X-33 Program. NASA would potentially be one of Lockheed Martin's primary customers for the cargo-only flights and, at this time, is the only anticipated customer for passenger flights. The passenger flights would carry crewmembers to and from the International Space Station.
Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 408
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Book Description
Author: T. A. Heppenheimer
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 364
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Book Description
Hypersonics is the study of flight at speeds where aerodynamic heating dominates the physics of the problem. Typically this is Mach 5 and higher. Hypersonics is an engineering science with close links to supersonics and engine design. Within this field, many of the most important results have been experimental. The principal facilities have been wind tunnels and related devices, which have produced flows with speeds up to orbital velocity. Why is it important? Hypersonics has had two major applications. The first has been to provide thermal protection during atmospheric entry. Success in this enterprise has supported ballistic-missile nose cones, has returned strategic reconnaissance photos from orbit and astronauts from the Moon, and has even dropped an instrument package into the atmosphere of Jupiter. The last of these approached Jupiter at four times the speed of a lunar mission returning to Earth. Work with re-entry has advanced rapidly because of its obvious importance. The second application has involved high-speed propulsion and has sought to develop the scramjet as an advanced airbreathing ramjet. Scramjets are built to run cool and thereby to achieve near-orbital speeds. They were important during the Strategic Defense Initiative, when a set of these engines was to power the experimental X-30 as a major new launch vehicle. This effort fell short, but the X-43A, carrying a scramjet, has recently flown at Mach 9.65 by using a rocket. Atmospheric entry today is fully mature as an engineering discipline. Still, the Jupiter experience shows that work with its applications continues to reach for new achievements. Studies of scramjets, by contrast, still seek full success, in which such engines can accelerate a vehicle without the use of rockets. Hence, there is much to do in this area as well. For instance, work with computers may soon show just how good scramjets can become. NASA SP-2007-4232
Author: Michael J. Curro
Publisher: DIANE Publishing
ISBN: 9780756713591
Category : Political Science
Languages : en
Pages : 316
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Book Description
As the U.S. enters a new cent., the 107th Cong. and the new admin. face an array of challenges and opportunities to enhance the performance and accountability of the Fed. gov't. and to position our country for the future. The GAO's recently issued Performance and Accountability Series describes those challenges. This report provides a framework for considering the budgetary implications of certain program reform options discussed in past GAO work but not yet addressed or enacted. This report is not a complete summary of possible options, but it does provide specific examples that demonstrate the programmatic and fiscal oversight needed as we enter the new millennium. Charts and tables.
Author: Steven J. Dick
Publisher: Government Printing Office
ISBN: 9780160877537
Category :
Languages : en
Pages : 680
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Book Description
Author: Stephen J. Dick
Publisher: U. S. National Aeronautics & Space Administration
ISBN:
Category : Business & Economics
Languages : en
Pages : 680
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Book Description
In March 2005, the NASA History Division and the Division of Space History at the National Air and Space Museum brought together a distinguished group of scholars to consider the state of the discipline of space history. This volume is a collection of essays based on those deliberations. The meeting took place at a time of extraordinary transformation for NASA, stemming from the new Vision of Space Exploration announced by President George W. Bush in January 204: to go to the Moon, Mars, and beyond. This Vision, in turn, stemmed from a deep reevaluation of NASA?s goals in the wake of the Space Shuttle Columbia accident and the recommendations of the Columbia Accident Investigation Board. The new goals were seen as initiating a "New Age of Exploration" and were placed in the context of the importance of exploration and discovery to the American experiences. (Amazon).
Author:
Publisher:
ISBN:
Category : Finance, Public
Languages : en
Pages : 262
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Book Description
