Author: C. L. YatesPublisher:
ISBN:
Category :
Languages : en
Pages : 68
Book Description
Experimental Results and Data Analysis Techniques of a Hydrogen-fueled Supersonic Combustor
Author: C. L. YatesConference on Hypersonic Aircraft Technology
Author: Theoretical and Experimental Investigation of Supersonic Combustion
Author: Antonio FerriPublisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 136
Book Description
A theoretical and experimental investigation of mixing and supersonic combustion is presented. A review of the problem under investigation is given. Then an analysis of inviscid flow fields with a finite rate chemistry for a hydrogen-air reaction is presented, an an analysis of a turbulent mixing for flows with large density gradients with no chemical reaction is presented. The analysis is compared wit the experimental results. Results of the experiments in upersonic combustion are presented. (Author).
Experimental Results on Supersonic Combustion
Author: J. TAMAGNOPublisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
Experiments on spontaneous combustion characteristics of hydrogen injected into a supersonic stream of hot air are described in detail. The results are presented and compared with a theory developed for premixed reactants. The experimental data show that if the initial static temperature and the static pressure of the air stream are high enough then diffusion will be rate controlling and a mixing theory using equilibrium chemistry could be used in analyzing the combustion process. If the chemical reactions are slow, the behavior of the combustion process can be studied as a system where mixing and diffusive effects are absent. The ignition delay times inferred from the initiation of the pressure rise along the burner are in good agreement with those predicted by the empirical correlation. The static temperature exerts a greater influence on the ignition delay time than the static pressure. The static pressure level is an important parameter in determining the time for complete combustion. (Author).
A Feasibility Study of an Experiment for Determining the Properties of the Mars Atmosphere
Author: Steven GeorgievPublisher:
ISBN:
Category : Mars (Planet)
Languages : en
Pages : 760
Book Description
Hydrogen-Fueled Scramjet Investigation
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 559
Book Description
This report documents an experimental and analytical study of the supersonic mixing and combustion processes associated with a free-shear layer. A specific objective comprised quantifying the effects on the mixing and combustion processes of pressure gradients associated with the production of shock waves in the flowfield. An experiment was conducted in a generic supersonic combustion configuration that incorporated the essential characteristics of scramjet combustors currently being considered for flight application. The objective of the analytical effort was to evaluate mixing and combustion models in state-of-the-art computational fluid dynamics (CFD) codes. The experiments provided accurate data used to formulate code input conditions and to evaluate codes that were formulated for application in current high-speed propulsion design activities. Species concentration, total and static temperature, and pitot pressure profiles were measured in a shear layer experiment in which gaseous hydrogen was injected tangentially into a Mach 3 (nominal) vitiated air stream. In this experiment, hydrogen was injected adjacent to the upperwall of the test section. A nonintrusive optical diagnostic technique was used in conjunction with intrusive probing to define the flowfield initial conditions and to characterize the detailed features of the flowfield subsequent to hydrogen injection and combustion.
NASA Technical Memorandum
Author: Optical Measurement of Static Temperature and Hydroxyl Radical Profiles in a Hydrogen-fueled Supersonic Combustor
Author: Raymond E. GauglerPublisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 20
Book Description
Experimental Hydrogen-fueled Automotive Engine Design Data-base Project. Volume 2. Main Technical Report
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Operational performance and emissions characteristics of hydrogen-fueled engines are reviewed. The project activities are reviewed including descriptions of the test engine and its components, the test apparatus, experimental techniques, experiments performed and the results obtained. Analyses of other hydrogen engine project data are also presented and compared with the results of the present effort.
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 380
Book Description
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.