Results 251 to 260 of about 238,061 (301)

Liquefying fuel regression rate modeling in hybrid propulsion

Aerospace Science and Technology, 2015
Abstract This paper presents an overview of the main hypotheses and equations which lead to the design of the Hydres platform, a 1D code developed to evaluate liquefying fuel regression rates in hybrid propulsion and the engine propulsive performances.
J.-Y. Lestrade, J. Anthoine, G. Lavergne
openaire   +3 more sources

Scale effect of fuel regression rate in hybrid rocket motor

Aerospace Science and Technology, 2013
Abstract The scale effect of solid fuel regression rate in hybrid rocket motors is investigated theoretically based on pipe turbulent boundary combustion theory firstly, and a practicable scaling criterion of solid fuel regression rate has been obtained.
Guobiao Cai, Peng Zeng, Xintian Li, Hui Tian, Nanjia Yu   +4 more
openaire   +3 more sources

A new model of regression rate for solid fuel scramjet

International Journal of Heat and Mass Transfer, 2019
Abstract A new theoretical model has been developed to calculate the regression rate of solid fuel scramjet (SF-Scramjet). This model obtains the local regression rate by calculating the local heat flux on the fuel surface, which is obtained by a standard wall function. A two-dimensional, axisymmetric, turbulent, one-reaction model which used the new
Hao Zhang, Ningfei Wang, Zhiwen Wu, Wanzhi Han, Rui Du   +4 more
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Regression rate of paraffin-based fuels in hybrid rocket motor

Aerospace Science and Technology, 2020
Abstract Paraffin-based fuels are regarded as a promising solid fuel for hybrid rocket motor (HRM) owing to high regression rate, excellent mechanical performance, and high dropping point. The regression rate of paraffin-based fuels was characterized by static fire test with nitrous oxide (N2O) and gaseous oxygen (GOX) as oxidizer, and the effect of ...
Lin-lin Liu, Xiang He, Yin Wang, Ze-bin Chen, Quan Guo   +4 more
openaire   +3 more sources

Solid-fuel ramjet fuel regression rate/thrust modulation

Journal of Propulsion and Power, 1992
An experimental investigation was conducted to determine if inlet air swirl and/or secondary gaseous injection could be used effectively for fuel regression rate control or thrust modulation in a solid-fuel ramjet. Inlet swirl characteristics were measured in nonreacting flows.
W. H. Campbell, B. N. Ko, S. R. Lowe, D. W. Netzer   +3 more
openaire   +1 more source

Regression rates of nonmetalized hybrid fuel systems

AIAA Journal, 1965
A laboratory-scale slab burner has been used to characterize the regression rate of three different binder compounds with oxidizers varied from 100% fluorine to 100% oxygen. The oxidizer flow rate and pressure were varied from 0.014 to 0.17 lb/in.2-sec and 20 to 160 psia, respectively.
L. D. SMOOT, C. F. PRICE
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Pressure dependence of hybrid fuel regression rates.

AIAA Journal, 1967
experiment," TRW Systems, Rept. 4389-6039-RUOOO (October 1965). 9 Blackman, R. B. and Tukey, J. W., The Measurement of Power Spectra (Dover Publications Inc., New York, 1959). 10 Southworth, R. W., "Autocorrelation and spectral analysis," Mathematical Methods for Digital Computers, edited by A. Ralston and H. S.
L. D. SMOOT, C. F. PRICE
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Regression Rate Behavior of Hybrid Rocket Solid Fuels

Journal of Propulsion and Power, 2000
An experimental investigation of the regression-rate characteristics of hydroxyl-terminated polybutadiene (HTPB) solid fuel burning with oxygen was conducted using a windowed, slab-geometry hybrid rocket motor. A real-time, x-ray radiography system was used to obtain instantaneous solid-fuel regression rate data at many axial locations.
Martin J. Chiaverini, Nadir Serin, David K. Johnson, Yeu-Cherng Lu, Kenneth K. Kuo, Grant A. Risha   +5 more
openaire   +1 more source

Hybrid rocket fuel combustion and regression rate study

28th Joint Propulsion Conference and Exhibit, 1992
The objectives of this study are to develop hybrid fuels (1) with higher regression rates and reduced dependence on fuel grain geometry and (2) that maximize potential specific impulse using low-cost materials. A hybrid slab window motor system was developed to screen candidate fuels - their combustion behavior and regression rate.
L. STRAND, R. RAY, F. ANDERSON, N. COHEN
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Pressure dependence of nonmetalized hybrid fuel regression rates.

AIAA Journal, 1967
Theoretical interpretations are reviewed and discussed for recent experimental observations on the pressure dependence of nonmetalized hybrid fuel regression rates. It is emphasized that regression rate data alone are not likely to be capable of demonstrating whether the major heat-release reactions are heterogeneous or homogeneous.
F. J. KOSDON, F. A. WILLIAMS
openaire   +1 more source