摘要:

AbstractA high speed photographic study at a framing rate of 5 × 106s−1has been made of the propagation of high velocity detonation in single crystals of α‐lead azide. Crystals of cross section 2 mm × 2 mm and greater detonated at∼8000 m/s whereas those of smaller sizes (∼1 mm) deflagrated at ∼ 3000 m/s. Finally, the mechanism of propagation of high velocity detonation has be

ISSN:0721-3115    

DOI:10.1002/prep.19770020502

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

摘要:

AbstractThe present paper describes a method for determining the equilibrium composition of the combustion products and the performance of propellants by using the Free Energy Minimization Technique. This minimization is sought to be carried out by a direct random search technique and systematic reduction of the size of the search region. The problem was programmed on the IBM 360/ Model 44 Computer in FORTRAN IV and rhe results for a typical metallized propellant are shown in the paper.

ISSN:0721-3115    

DOI:10.1002/prep.19770020503

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

摘要:

AbstractTheoretically there seems to be a linear dependence between specific impulse and the ignition delay in liquid bipropellant systems. It has been observed that the plot of specific impulse versus mixture ratio of various systems based on red fuming nitric acid oxidizer show a maximum. The ignition delay versus mixture ratio plot of the same systems on the other hand show a minimum at a mixture ratio which corresponds to the maximum specific impulse. Thus, the mixture corresponding to maximum performance of a liquid bipropellant system could be qualitatively predicted from the ignition delay measurements.

ISSN:0721-3115    

DOI:10.1002/prep.19770020504

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

摘要:

Abstract5,6,7‐Trihydro‐5,7‐diphenyl‐thiazolo [3,2‐b]‐s‐triazin‐3(2H)‐one (C17H15N3OS) is used as a stabilizer for the double base propellant and gave good results with the stability tests. The samples were stored for 12 days at 100° C and were extracted by different suitable solvents. The column partition chromatography helped in separation of 5,6,7‐trihydro‐5,7‐(2‐nitrodiphenyl)‐thiazolo[3,2‐b]‐s‐triazin‐3(2H)‐one; 5,6,7‐trihydro‐ 5,7‐(4‐nitrodiphenyl)‐thiazolo[3,2‐b]‐s‐triazin‐3(2H)‐one; 5,6,7‐trihydro‐5,7‐(2,2′‐dinitrodiphenyl)‐thiazolo[3,2‐b]‐s‐triazin‐3(2H)‐one; 5,6,7‐trihydro‐5,7‐(4,4

ISSN:0721-3115    

DOI:10.1002/prep.19770020505

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

摘要:

AbstractLes inhibiteurs de combustion pour blocs d'autopropulsion en propergols double‐base à la nitroglycerine sont generalement des polyesters. On montre comment et pourquoi I'ester nitrique migre de la poudre vers I'inhibiteur au cours du vieillissement, et on etudie des moyens pour eviter cette migrati

ISSN:0721-3115    

DOI:10.1002/prep.19770020506

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

摘要:

AbstractEs wird cin modifiziertes Lagrangesches Modell der Innenballistik mitgeteilt. Dieses hat gegenüber dem bestehenden Lagrangeschen Modell den Vorteil, daR es genauer ist und daR es als Ausgangsnäherung fur ein iteratives Verfahren benutzt werden kan

ISSN:0721-3115    

DOI:10.1002/prep.19770020507

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.19770020508

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.19770020509

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.19770020510

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.19770020501

出版商:WILEY‐VCH Verlag GmbH    

年代:1977

数据来源: WILEY