Results 61 to 70 of about 317 (165)

A Structural Integrity Perspective for the Assessment of Ageing in Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 10, Page 152-158, October 2025.
ABSTRACT Composite solid propellants (CSPs) are critical materials in the defence and aerospace industries, known for their complex mechanical behaviour and susceptibility to ageing. This study explores the application of Principal Component Analysis (PCA) to discriminate the ageing degradation of CSPs based on structural integrity parameters.
Mario Martínez, Raúl López, Jesús Rodríguez, Alicia Salazar   +3 more
wiley   +1 more source

A Critical Review of Limitations and Challenges in Advancement of HNF as a Green Oxidizer for Composite Solid Propellant Formulations

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 7, Page 11-30, July 2025.
ABSTRACT Hydrazinium nitroformate (HNF) is a chlorine‐free, high‐energy oxidizer with promising applications in green propulsion systems. This review examines the thermal decomposition, combustion kinetics, flame structure, and behavior of HNF, while critically evaluating the current body of literature.
Lakshay Bansal, Prakhar Jindal, Vineet Kumar Rathi   +2 more
wiley   +1 more source

Research on microscopic structure–activity relationship of AP particle–matrix interface in HTPB propellant

e-Polymers
The matrix and particle interface of hydroxyl-terminated polybutadiene (HTPB) propellant is the weakest part of its mechanical properties, making it prone to dewetting damage and destroying the structural integrity of the propellant.
Zou Zijie, Qiang Hongfu, Zhou Junhong, Zhang Fengtao, Wang Xueren, Li Yiyi   +5 more
doaj   +1 more source

Numerical simulation of cook-off characteristics for AP/HTPB

Defence Technology, 2018
The present study is devoted to researching the thermal security problems of large-scale solid rocket motor with Ammonium perchlorate/Hydroxyl-terminated polybutadiene (AP/HTPB). A two-dimensional axisymmetric model for the cook-off of solid rocket motor
Qing Ye, Yong-gang Yu
doaj   +1 more source

High-nitrogen azotetrazole based pyrogen gas generating propellants: Aspects on synthesis, characterization, combustion characteristics and kinetics

FirePhysChem
Propellant formulations containing a novel high nitrogen azotetrazole salt viz., diammonium 5,5′-azotetrazolate (DAAzT) along with two different binders viz., hydroxyl terminated polybutadiene (HTPB) and glycidyl azide polymer (GAP) were realized as ...
Santhosh G, J. Anju, Supriya N, Sreejith M, Suraj S   +4 more
doaj   +1 more source

Electron spins coupling of coconut shell activated nanocarbons in solid propellant on improving to the thrust stability and specific impulses

Journal of Mechanical Engineering and Sciences, 2018
The role of activated coconut carbon in the combustion of solid propellant composed by ammonium perchlorate, aluminum, and hydroxyl terminated polybutadiene on improving to the thrust stability and specific impulses have been studied experimentally ...
Nur Rachman Supadmana Muda, I.N.G. Wardana, Nurkholis Hamidi, Lilis Yuliati, Gunawan Witjaksono   +4 more
doaj   +1 more source

Influence of 1,4-butanediol on hydroxyl-terminated poly(butadiene) based composite propellant binder characteristics [PDF]

Scientific Technical Review, 2015
1.4-butanediol, as a chain extender, was incorporated into a hydroxyl-terminated poly(butadiene) based composite rocket propellant binder composition. As curing agents, isophorone diisocyanate (IPDI) and toluene diisocyanate (TDI) were used.
Brzić Saša, Rodić Vesna, Dimić Mirjana, Simić Danica, Jelisavac Ljiljana, Bogosavljević Marica   +5 more
doaj  

Three-dimensional microstructural characterization of HMX-based propellant via synchrotron X-ray tomography

Energetic Materials Frontiers
Although octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) plays a critical role in high-performance weapon systems, its microstructural behavior within the grains of solid propellants and PBXs has not been fully explored. This challenge arises from
Jun Wang, Chen-xi Ma, Pei-pei Wang, Jun-feng Wang   +3 more
doaj   +1 more source

Effects of Azide-Hydroxyl-Terminated Polybutadiene on the Properties of Solid Heterogeneous Rocket Propellants

Central European Journal of Energetic Materials, 2022
Michał Chmielarek, Beata Sztejter, Piotr Kasprzak, Piotr Prasuła   +3 more
openaire   +1 more source

Effect of Curing Parameter on the Mechanical Properties and Bond Strength at Propellant-Liner Interfaces in Rocket Motors

Chemical Engineering Transactions
This study investigates the effect of curing parameters (Rt) on the mechanical properties and bond strength of propellants and liners in rocket motors compared to the design values.
Thirapat Kitinirunkul, Paisarn Boonyarat, Khumchoo Wasan, Apinan Namkanisorn   +3 more
doaj