Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 592
Book Description
NASA Technical Note
Author: Analysis of Heat-transfer Effects in Rocket Nozzles Operating with Very High-temperature Hydrogen
Author: John R. HowellPublisher:
ISBN:
Category : Energy transfer
Languages : en
Pages : 44
Book Description
An analytical technique suitable for & the solution of complex energy transfer problems involving coupled radiant and convective energy transfer is developed. Solutions for the coupled axial wall energy flax distribution in rocket nozzles using hydrogen as a propellant are presented. Flow rates and temperatures studied are near those forecast for gaseous-core nuclear-propulsion systems. Parameters varied are nozzle shape, inlet propellant temperature, mean reactor cavity temperature, and nozzle wall temperature level. The effects of variation of the propellant radiation absorption coefficient with pressure, temperature, and wavelength are presented, and real property variations are used where they appear to be significant. Comparison is made to a simplified, coupled solution using a modified second-order one-dimensional diffusion equation for the radiative transfer. At the temperature levels assumed, radiative transfer may account for a greater portion of the total energy transfer over important portions of the nozzle, and its effects cannot, therefore, be neglected. Extreme energy flaxes (near 3XlO to the 8 Btu/(hr)(sq ft)) are observed for certain cases, and this implies that new nozzle cooling techniques must be developed.
Analysis, Feasibility, and Wall-temperature Distribution of a Radiation-cooled Nuclear-rocket Nozzle
Author: William H. RobbinsPublisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 36
Book Description
An Analysis of Thermal Radiation Heat Transfer in a Nuclear-rocket Nozzle
Author: William H. RobbinsPublisher:
ISBN:
Category : Propulsion systems
Languages : en
Pages : 28
Book Description
NASA Technical Report
Author: A Design Study of a Regeneratively Cooled Nozzle for a Tungsten Water-moderated Nuclear Rocket System
Author: Richard L. PuthoffPublisher:
ISBN:
Category : Liquid propellants
Languages : en
Pages : 44
Book Description
U.S. Government Research Reports
Author: Monthly Catalog of United States Government Publications
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1248
Book Description
Scientific and Technical Aerospace Reports
Author: Technical Publications Announcements with Indexes
Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 588
Book Description