Flight Testing The Linear Aerospike Sr 71 Experiment Lasre
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Flight Testing The Linear Aerospike Sr 71 Experiment Lasre
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Author : Stephen Corda
language : en
Publisher:
Release Date : 1998
Flight Testing The Linear Aerospike Sr 71 Experiment Lasre written by Stephen Corda and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aerospace planes categories.
The design of the next generation of space access vehicles has led to a unique flight test that blends the space and flight research worlds. The new vehicle designs, such as the X-33 vehicle and Reusable Launch Vehicle (RLV) are powered by linear aerospike rocket engines. Conceived of in the 1960's, these aerospike engines have yet to be flown, and many questions remain regarding aerospike engine performance and efficiency in flight. To provide some of these data before flying on the X-33 vehicle and the RLV, a spacecraft rocket engine had been flight-tested atop the NASA SR-71 aircraft as the Linear Aerospike SR-71 Experiment (LASRE). A 20 percent-scale, semispan model of the X-33 vehicle, the aerospike engine, and all the required fuel and oxidizer tanks and propellant feed systems have been mounted atop the SR-71 airplane for this experiment. A major technical objective of the LASRE flight test is to obtain installed-engine performance flight data for comparison to wind-tunnel results and for the development of computational fluid dynamics-based design methodologies. The ultimate goal of firing the aerospike rocket engine in flight is still forthcoming. An extensive design and development phase of the experiment hardware has been completed, including approximately 40 ground tests. Five flights of the LASRE and firing the rocket engine using inert liquid nitrogen and helium in place of liquid oxygen and hydrogen have been successfully completed.
Linear Aerospike Sr 71 Experiment Lasre Aerospace Propulsion Hazard Mitigation Systems
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Author : Masashi Mizukami
language : en
Publisher:
Release Date : 1998
Linear Aerospike Sr 71 Experiment Lasre Aerospace Propulsion Hazard Mitigation Systems written by Masashi Mizukami and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Airplanes categories.
Automated Testing Experience Of The Linear Aerospike Sr 71 Experiment Lasre Controller
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Author : Richard R. Larson
language : en
Publisher:
Release Date : 1999
Automated Testing Experience Of The Linear Aerospike Sr 71 Experiment Lasre Controller written by Richard R. Larson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with System analysis categories.
System controllers must be fail-safe, low cost, flexible to software changes, able to output health and status words, and permit rapid retest qualification. The system controller designed and tested for the aerospike engine program was an attempt to meet these requirements. This paper describes the aerospike controller design, the automated simulation testing techniques, and the real time monitoring data visualization structure. Controller cost was minimized by design of a single-string system that used an off-the-shelf 486 central processing unit. A linked-list architecture, with states defined in a user-friendly state table, accomplished software changes to the controller. Proven to be fail-safe, this system reported the abort cause and automatically reverted to a safe condition for any first failure.
A Base Drag Reduction Experiment On The X 33 Linear Aerospike Sr 71 Experiment Lasre Flight Program
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Author : Stephen A. Whitmore
language : en
Publisher:
Release Date : 1999
A Base Drag Reduction Experiment On The X 33 Linear Aerospike Sr 71 Experiment Lasre Flight Program written by Stephen A. Whitmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Drag (Aerodynamics) categories.
Drag reduction tests were conducted on the LASRE/X-33 flight experiment. The LASRE experiment is a flight test of a roughly 20-percent scale model of an X-33 forebody with a single aerospike engine at the rear. The experiment apparatus is mounted on top of an SR-71 aircraft. This paper suggests a method for reducing base drag by adding surface roughness along the forebody. Calculations show a potential for base drag reductions of 8 to 14 percent. Flight results corroborate the base drag reduction, with actual reductions of 15 percent in the high-subsonic flight regime. An unexpected result of this experiment is that drag benefits were shown to persist well into the supersonic flight regime. Flight results show no overall net drag reduction. Applied surface roughness causes forebody pressures to rise and offset base drag reductions. Apparently the grit displaced streamlines outward, causing forebody compression. Results of the LASRE drag experiments are inconclusive and more work is needed. Clearly, however, the forebody grit application works as a viable drag reduction tool.
Test Report For Nasa Msfc Support Of The Linear Aerospike Sr 71 Experiment Lasre
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-13
Test Report For Nasa Msfc Support Of The Linear Aerospike Sr 71 Experiment Lasre 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 2018-06-13 with categories.
The Linear Aerospike SR-71 Experiment (LASRE) was performed in support of the Reusable Launch Vehicle (RLV) program to help develop a linear aerospike engine. The objective of this program was to operate a small aerospike engine at various speeds and altitudes to determine how slipstreams affect the engine's performance. The joint program between government and industry included NASA!s Dryden Flight Research Center, The Air Force's Phillips Laboratory, NASA's Marshall Space Flight Center, Lockheed Martin Skunkworks, Lockheed-Martin Astronautics, and Rocketdyne Division of Boeing North American. Ground testing of the LASRE engine produced two successful hot-fire tests, along with numerous cold flows to verify sequencing and operation before mounting the assembly on the SR-71. Once installed on the aircraft, flight testing performed several cold flows on the engine system at altitudes ranging from 30,000 to 50,000 feet and Mach numbers ranging from 0.9 to 1.5. The program was terminated before conducting hot-fires in flight because excessive leaks in the propellant supply systems could not be fixed to meet required safety levels without significant program cost and schedule impacts. Elam, S. K. Marshall Space Flight Center
Flight Stability And Control And Performance Results From The Linear Aerospike Sr 71 Experiment Lasre
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Author : Timothy R. Moes
language : en
Publisher:
Release Date : 1998
Flight Stability And Control And Performance Results From The Linear Aerospike Sr 71 Experiment Lasre written by Timothy R. Moes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Rocket engines categories.
Lockheed Sr 71 Blackbird
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Author : Paul F. Crickmore
language : en
Publisher: Bloomsbury Publishing
Release Date : 2015-06-20
Lockheed Sr 71 Blackbird written by Paul F. Crickmore and has been published by Bloomsbury Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-20 with History categories.
The SR-71 represents the very pinnacle of Cold War aircraft design and it has become an aviation icon. Together with its predecessor, the A-12, the Blackbird was a giant leap into the technical unknown and the design employed many forms of new technology made necessary by the excesses of speed, altitude and temperature to which the aircraft was subjected. Throughout its 34-year Air Force career, the SR-71 proved itself to be the world's fastest and highest flying operational manned aircraft. It set a number of world records for altitude and speed, including an absolute altitude record of 85,069ft on 28 July 1974, and an absolute speed record of 2,193.2mph the same day. This truly was a unique and ground-breaking aircraft, whose fascinating design history is explored here in full and illuminated with photographs and detailed technical illustrations.
Sr 71 Blackbird
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Author : Paul F. Crickmore
language : en
Publisher: Bloomsbury Publishing
Release Date : 2016-05-19
Sr 71 Blackbird written by Paul F. Crickmore and has been published by Bloomsbury Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-19 with History categories.
Written by an expert on the SR-71 Blackbird, this book offers readers a short, fascinating history of this incredible military aircraft . Lockheed's SR-71 Blackbird is one of the most iconic and famous jets ever built. Assembled in secret at Lockheed's Skunkworks, the Blackbird's vital statistics remain phenomenal decades later. It holds the airspeed record for a manned jet aircraft, operated at an altitude other aircraft could barely touch and was a marvel of technical engineering. Drawing on declassified material, leading SR-71 expert Paul Crickmore reveals the history of the most fascinating of aircraft, accompanied by a range of fantastic illustrations, photographs and facts about the world's most secret spy plane.
Flights Of Discovery
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Author : Lane E. Wallace
language : en
Publisher:
Release Date : 2006
Flights Of Discovery written by Lane E. Wallace and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Government publications categories.
Nasa S Contributions To Aeronautics Flight Environment Operations Flight Testing And Research
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Author :
language : en
Publisher:
Release Date : 2010
Nasa S Contributions To Aeronautics Flight Environment Operations Flight Testing And Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Aeronautics categories.
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.