Pintle motor challenges for tactical missiles

Ostrander, Mark J.; Bergmans, John L.; Thomas, Melanie; Burroughs, Susan

doi:10.2514/6.2000-3310

Cited by 27 publications

(6 citation statements)

References 1 publication

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“…Previous studies have demonstrated that adjusting the throat area can effectively regulate the thrust of solid rocket motors and provide liquid rocket motors with higher performance and chamber pressure [41,42]. Two prominent technologies in this regard are pintle throat [43][44][45] and fluidic throat technology.…”

Section: Thrust Adjustment By Fluid Throatmentioning

confidence: 99%

Research Progress on Active Secondary Jet Technology in Supersonic Flow Field of Aerospace Propulsion Systems

Zhu,

Guo,

Sun

et al. 2023

Fluids

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As humans continue to explore the aerospace field, higher demands have been placed on new types of propulsion systems. Meanwhile, active secondary flow has been applied to various aspects of engines over the past seventy years, significantly enhancing engine performance. For the new generation of propulsion systems, active secondary flow remains a highly promising technology. This article provides an overview of the application of active secondary flow in engines, including a review of the past research on the secondary jet flow field, and an introduction of the more prominent applications of the jet in engines and its research progress. Finally, the problems existing in the current application of the secondary jet are summarized, and the future direction of the research is anticipated.

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Section: Thrust Adjustment By Fluid Throatmentioning

confidence: 99%

Research Progress on Active Secondary Jet Technology in Supersonic Flow Field of Aerospace Propulsion Systems

Zhu,

Guo,

Sun

et al. 2023

Fluids

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“…From the plan view of the nozzle, the effective cross-sectional area is actually the projection of the side area of a truncated cone in the direction of gas flow. By default, the direction of gas flow is parallel to the inclination direction of the cone of the pintle, so the effective cross-sectional area is just calculated in (1). The effective cross-sectional area is sorted into a function related to displacement, and two coefficients are defined as:…”

Section: Physical Modelmentioning

confidence: 99%

“…At the same time, once the solid rocket motor is ignited, the solid propellant will continue to burn unstoppable until the propellant is consumed before shutting down. [1] Therefore, the variable-thrust solid rocket motor has attracted much attention due to its high maneuverability and flexibility. Among the various schemes of the variable-thrust solid motor, the pintle adjustment scheme has a wide range of thrust changes and is widely used in attitude control.…”

Section: Introductionmentioning

confidence: 99%

Research on the Scheme of Variable Thrust Solid Rocket Motor

Yin

Zhou

et al. 2022

J. Phys.: Conf. Ser.

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The solid rocket motor is extremely widely used due to its many advantages, but the solid rocket motor also has the disadvantage that the thrust cannot be changed. To solve this problem, there are generally two solutions to this problem. One is to use a mechanical pintle structure to change the effective cross-sectional area of the nozzle, and then to change the size of the thrust. The other is to change the effective cross-sectional area through the secondary jet method. These two methods all can change the size of the thrust, but they also have their drawbacks. The domestic team proposed a plan that combines the two methods to make up for each other’s shortcomings.

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“…Solid rockets have less movable parts, reasonably good mass fraction and reasonable specific impulse, thus making them outstanding in comparison with other propellant rockets. Due to its simplicity and reliability, which has dominated the tactical missile field with no significant design compromises, it is also used in a larger application for low orbit satellite launch in form of boosters, air-to-air, air-to-ground military missiles and as model rockets (Ostrander et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…In pintle technology the effects of several important parameters were studied, the relationship between the pintle geometry, pintle position and throat area were determined and used for design decisions (Ostrander et al 2000). In terms of the pintle speed and geometries, performance variations were examined (Lee et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Response Characteristics of Solid Rocket Pintle Motor

Sapkota

Sun

2019

J.Aerosp. Technol. Manag.

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Pintle technology is currently a versatile technology used in a solid rocket motor (SRM) to control the desired thrust by changing the nozzle throat area, while effectively controlling the chamber pressure at the same time. The sudden movement of the pintle can induce rapid changes in the flow field and the occurrence of pressure oscillations inside the combustion chamber. The analysis of such rapid changes is essential to design an efficient controllable pintle rocket motor for a better thrust regulation. Two-dimensional axisymmetric models with mesh generation and required boundary condition were designed to analyze the effects of three different pintle head shape models in SRM thrust regulation effect. Dynamic mesh method was used with specific velocity for moving plug/pintle in the numerical analysis of SRM thrust regulation. The effects of different pintle head models on the flow field, combustion chamber pressure, mass-flow rate, thrust and Mach number were investigated. According to the analysis of total pressure response time, the simulation data revealed that circular pintle head model responded faster among three different models. According to the thrust effect, parabolic pintle has the maximum value of thrust and the greatest total pressure recovery coefficient among all pintle head models.

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Pintle motor challenges for tactical missiles

Cited by 27 publications

References 1 publication

Research Progress on Active Secondary Jet Technology in Supersonic Flow Field of Aerospace Propulsion Systems

Research Progress on Active Secondary Jet Technology in Supersonic Flow Field of Aerospace Propulsion Systems

Research on the Scheme of Variable Thrust Solid Rocket Motor

Numerical Study on Response Characteristics of Solid Rocket Pintle Motor

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