Investigation of Carbon–Carbon Nozzle Throat Erosion in a Solid Rocket Motor Under Acceleration Conditions

2020 ◽  
Author(s):  
Liwu Wang ◽  
Weiping Tian ◽  
Linquan Chen ◽  
Yunqiang Guo
Keyword(s):  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Nozzle Throat ◽  
Solid Rocket

scholarly journals Comparison Of Solid Rocket Motor Thrust Modulation Technique

2021 ◽  
Author(s):  
Clayton Edward Wozney
Keyword(s):  
Longitudinal Axis ◽  
Rocket Motor ◽  
Chamber Pressure ◽  
The Novel ◽  
Solid Rocket Motor ◽  
Nozzle Throat ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
Lower Chamber ◽  
Solid Rocket

The thrust profiles of solid rocket motors are usually determined ahead of time by propellant composition and grain design. Traditional techniques for active thrust modulation use a moveable pintle to dynamically change the nozzle throat diameter, increasing the chamber pressure and therefore thrust. With this approach, high chamber pressures must be endured with only modest increases in thrust. Alternatively, it has been shown that spinning a solid rocket motor on its longitudinal axis can increase the burning rate of the propellant and therefore the thrust without the resulting high chamber pressures. Building on prior experience modelling pressure-dependent, low-dependent and acceleration-dependent burning in solid rocket motors, an internal ballistic simulation computer program is modified for the present study where the use of the pintle nozzle and spin-augmented solid rocket motor combustion approaches, for a reference cylindrical-grain motor, are compared. This study confirms that comparable thrust augmentation can be gained at lower chamber pressures using the novel spin-acceleration approach, relative to the established pintle-nozzle approach, thus potentially providing a significant design advantage.

scholarly journals Comparison Of Solid Rocket Motor Thrust Modulation Technique

2021 ◽  
Author(s):  
Clayton Edward Wozney
Keyword(s):  
Longitudinal Axis ◽  
Rocket Motor ◽  
Chamber Pressure ◽  
The Novel ◽  
Solid Rocket Motor ◽  
Nozzle Throat ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
Lower Chamber ◽  
Solid Rocket

The thrust profiles of solid rocket motors are usually determined ahead of time by propellant composition and grain design. Traditional techniques for active thrust modulation use a moveable pintle to dynamically change the nozzle throat diameter, increasing the chamber pressure and therefore thrust. With this approach, high chamber pressures must be endured with only modest increases in thrust. Alternatively, it has been shown that spinning a solid rocket motor on its longitudinal axis can increase the burning rate of the propellant and therefore the thrust without the resulting high chamber pressures. Building on prior experience modelling pressure-dependent, low-dependent and acceleration-dependent burning in solid rocket motors, an internal ballistic simulation computer program is modified for the present study where the use of the pintle nozzle and spin-augmented solid rocket motor combustion approaches, for a reference cylindrical-grain motor, are compared. This study confirms that comparable thrust augmentation can be gained at lower chamber pressures using the novel spin-acceleration approach, relative to the established pintle-nozzle approach, thus potentially providing a significant design advantage.

Structural behavior of solid rocket motor field joints

1987 ◽  
Author(s):  
MICHAEL CARD ◽  
ROBERT WINGATE
Keyword(s):  
Rocket Motor ◽  
Structural Behavior ◽  
Solid Rocket Motor ◽  
Solid Rocket

Debond defect detection in shell of solid rocket motor by thermal wave nondestructive testing

2012 ◽  
Vol 29 (3) ◽  
pp. 252-257
Author(s):  
Yuan-jia SONG ◽  
Wei ZHANG ◽  
Zheng-wei YANG ◽  
Gan TIAN
Keyword(s):  
Nondestructive Testing ◽  
Defect Detection ◽  
Thermal Wave ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Solid Rocket

Experimental and Numerical Characterization of Polymer Nanocomposites for Solid Rocket Motor Internal Insulation

2009 ◽  
Author(s):  
J. H. Koo ◽  
O. A. Ezekoye ◽  
M. C. Bruns ◽  
J. C. Lee
Keyword(s):  
Polymer Nanocomposites ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Numerical Characterization ◽  
Solid Rocket
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