Author: C. E. Campbell
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 42
Book Description
An investigation was conducted to obtain nozzle performance data with relatively large-scale models at pressure ratios as high as 120. Conical convergent-divergent nozzles with divergence angles alpha of 15, 25, and 29 deg. were each tested at area ratios of approximately 10, 25, and 40. Heated air (1200 F) was supplied at the nozzle inlet at pressures up to 145 pounds per square inch absolute and was exhausted into quiescent air at pressures as low as 1.2 pounds per square inch absolute. Thrust ratios for all nozzle configurations are presented over the range of pressure ratios attainable and were extrapolated when possible to design pressure ratio and beyond. Design thrust ratios decreased with increasing nozzle divergence angle according to the trend predicted by the (1 + cos alpha)/2 parameter. Decreasing the nozzle divergence angle resulted in sizable increases in thrust ratio for a given surface-area ratio (nozzle weight), particularly at low nozzle pressure ratios. Correlations of the nozzle static pressure at separation and of the average static pressure downstream of separation with various nozzle parameters permitted the calculation of thrust in the separated-flow region from unseparated static-pressure distributions. Thrust ratios calculated by this method agreed with measured values within about 1 percent.
Performance of Several Conical Convergent-Divergent Rocket-Type Exhaust Nozzles
Internal Performance Characteristics of Short Convergent-divergent Exhaust Nozzles Designed by the Method of Characteristics
Author: H. George Krull
Publisher:
ISBN:
Category : Charts, diagrams, etc
Languages : en
Pages : 24
Book Description
An evaluation of the internal performance characteristics of short nozzles designed by the method of characteristics was obtained over a range of nozzle pressure ratios from 1.5 to 22.
Publisher:
ISBN:
Category : Charts, diagrams, etc
Languages : en
Pages : 24
Book Description
An evaluation of the internal performance characteristics of short nozzles designed by the method of characteristics was obtained over a range of nozzle pressure ratios from 1.5 to 22.
Preliminary Investigation of Off-design Performance of Divergent-ejector-type Rocket Nozzles
Author: Laurence W. Gertsma
Publisher:
ISBN:
Category : Ejector pumps
Languages : en
Pages : 48
Book Description
Publisher:
ISBN:
Category : Ejector pumps
Languages : en
Pages : 48
Book Description
Experimental Study of Effects of Geometric Variables on Performance of Contoured Rocket Engine Exhaust Nozzles
Author: Harry E. Bloomer
Publisher:
ISBN:
Category : Liquid fuels
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Liquid fuels
Languages : en
Pages : 32
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 584
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 584
Book Description
Effect of Nozzle Inlet Geometry on Performance of a Swiveled Convergent-divergent Nozzle
Author: Albert J. Pavli
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 44
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 44
Book Description
Preliminary Investigation of Off-design Performance of Divergent-ejector-type Rocket Nozzles
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Effect of Divergence Angle on the Internal Performance Characteristics of Several Conical Convergent-divergent Nozzles
Author: Fred W. Steffen
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Theoretical Performance of Hydrogen-oxygen Rocket Thrust Chambers
Author: Gilbert K. Sievers
Publisher:
ISBN:
Category : Hydrogen oxygen fuel cells
Languages : en
Pages : 84
Book Description
Publisher:
ISBN:
Category : Hydrogen oxygen fuel cells
Languages : en
Pages : 84
Book Description
NASA Technical Paper
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 44
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 44
Book Description