Rocket-in-a-Duct Performance Analysis PDF Download
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Author: Steven J. Schneider
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Author: Steven J. Schneider
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Book Description
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723752131
Category : Science
Languages : en
Pages : 40
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Book Description
An axisymmetric, 110 N class, rocket configured with a free expansion between the rocket nozzle and a surrounding duct was tested in an altitude simulation facility. The propellants were gaseous hydrogen and gaseous oxygen and the hardware consisted of a heat sink type copper rocket firing through copper ducts of various diameters and lengths. A secondary flow of nitrogen was introduced at the blind end of the duct to mix with the primary rocket mass flow in the duct. This flow was in the range of 0 to 10% of the primary massflow and its effect on nozzle performance was measured. The random measurement errors on thrust and massflow were within ]/-1%. One dimensional equilibrium calculations were used to establish the possible theoretical performance of these rocket-in-a-duct nozzles. Although the scale of these tests was small, they simulated the relevant flow expansion physics at a modest experimental cost. Test results indicated that lower performance was obtained at higher free expansion area ratios and longer ducts, while, higher performance was obtained with the addition of secondary flow. There was a discernable peak in specific impulse efficiency at 4% secondary flow. The small scale of these tests resulted in low performance efficiencies, but prior numerical modeling of larger rocket-in-a-duct engines predicted performance that was comparable to that of optimized rocket nozzles. This remains to be proven in large-scale, rocket-in-a-duct tests.Schneider, Steven J. and Reed, Brian D.Glenn Research CenterROCKET NOZZLES; ROCKET-BASED COMBINED-CYCLE ENGINES; MATHEMATICAL MODELS; RELIABILITY ANALYSIS; DUCTS; GASEOUS ROCKET PROPELLANTS; ALTITUDE SIMULATION; HYDROGEN; OXYGEN; SECONDARY FLOW; DATA REDUCTION; SPECIFIC IMPULSE; ROCKET THRUST; NOZZLE FLOW; PROPULSIVE EFFICIENCY
Author:
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ISBN:
Category :
Languages : en
Pages : 16
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 538
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: George P. Sutton
Publisher: John Wiley & Sons
ISBN: 9780471326427
Category : Science
Languages : en
Pages : 772
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Book Description
Aerospace Engineering/Mechanical Engineering The definitive text on rocket propulsion-now completely revised to reflect rapid advancements in the field For more than fifty years, this seminal text has been regarded as the single most authoritative sourcebook on rocket propulsion technology. More comprehensive and coherently organized than any other book on the subject, Rocket Propulsion Elements guides readers evenhandedly through the complex factors that shape propulsion, with both theory and practical design considerations. With more than a third of the text and illustrations either completely new or extensively revised, this latest edition includes current information on engine structures, nozzle theory, gas properties, thrust chambers, launch vehicles, and more. With a detailed table of contents breaking down each chapter into subsections-as well as an expanded index of key words-the Seventh Edition efficiently steers readers quickly to the information they need. Other highlights include: * Separate chapters on liquid, solid, and hybrid propulsion systems and a new chapter on thrust chambers including the new aerospike nozzle * Comprehensive coverage of rocket propulsion technology, with applications to space flight, satellite flight, and guided and unguided missiles * Problem-solving examples and exercises relevant to actual design situations * More than 340 illustrations, including photographs, tables, and graphs * Coherent, up-to-date chapter on electrical propulsion balancing fundamentals with practical aspects and applications For professional engineers in the aerospace and defense industries as well as undergraduate and graduate students in mechanical and aerospace engineering, this time-honored resource is indispensable for its scope of coverage and utility.
Author:
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ISBN:
Category :
Languages : en
Pages : 28
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Author: David E. Shonerd
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 108
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 992
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Author: Timmy Clinton Aden
Publisher:
ISBN:
Category : Rocket engines
Languages : en
Pages : 198
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Author:
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Category : Computer programs
Languages : en
Pages : 650
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