Results 171 to 180 of about 2,333 (214)
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Structure‐property relationship of HTPB‐based propellants. I. Effect of hydroxyl value of HTPB resin
Journal of Applied Polymer Science, 1993AbstractComposite propellants based on hydroxyl‐terminated polybutadience (HTPB) resin are the most common contemporary solid propellants for launch vehicle and missile applications. A series of HTPB resins, manufactured by free‐radical polymerisation using a peroxide initiator, with varying molecular weights and hydroxyl values, was used in propellant
R. Manjari +3 more
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AP/HTPB heterogeneous combustion with revised kinetics
Proceedings of the Combustion InstituteInternational audienceThis study first proposes a revised combustion model for composite propellants containing ammonium perchlorate (AP) and hydroxyl-terminated polybutadiene (HTPB).
Pierre Bernigaud +2 more
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Journal of the Iranian Chemical Society, 2017
In this work, at first alkylferrocene derivatives were synthesized according to procedure described in the literature. (5-Chloropentanoyl)ferrocene derivatives were prepared by Friedel–Crafts acylation of ferrocene and alkylferrocene derivatives with 5-chloropentanoyl chloride in dichloromethane, and AlCl3 was used as catalyst.
Reza Teimuri-mofrad +3 more
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In this work, at first alkylferrocene derivatives were synthesized according to procedure described in the literature. (5-Chloropentanoyl)ferrocene derivatives were prepared by Friedel–Crafts acylation of ferrocene and alkylferrocene derivatives with 5-chloropentanoyl chloride in dichloromethane, and AlCl3 was used as catalyst.
Reza Teimuri-mofrad +3 more
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Studying for the State Monitoring Time of HTPB Propellant
2016 9th International Symposium on Computational Intelligence and Design (ISCID), 2016Using the finite element analysis to draw a certain type of HTPB propellent on duty in the natural storage and carrier state of stress - time curve, using the linear cumulative damage theory, the HTPB propellent of cumulative damage in both conditions are simulated and calculated the two states of cumulative damage factor, discuss the engine timing of ...
Yanhui Tang +4 more
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Solid Propellants based on ADN and HTPB
47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011The aim of this work was to perform an initial evaluation of ammonium dinitramide, ADN, as substitute for ammonium perchlorate, AP, in solid rocket propellants for large space launch boosters. This paper includes performance evaluation, curing and compatibility assessments, propellant formulation and determination of ballistic properties.
John de Flon +5 more
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Combustion of AP/HTPB laminate propellants
37th Joint Propulsion Conference and Exhibit, 2001The combustion of AP/HTPB laminate propellants has been investigated experimentally and theoretically. The experiments used simultaneous UV emission and transmission imaging to obtain information about the flame structure and the burning surface profile.
M. Brewster, G. Knott, B. Chorpening
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Application of azide-containing molecules as modifiers of HTPB
Journal of Thermal Analysis and Calorimetry, 2018 S.411-419Hydroxyl-terminated polybutadiene (HTPB) has been widely modified and copolymerized with azide substances to be applicable as an elastomer binder in a composite solid propellant (CSP).
Maurício Ferrapontoff Lemos +3 more
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HTPB propellants for large booster applications
7th Propulsion Joint Specialist Conference, 1971Solid propellants based on low cost hydroxyl terminated polybutadiene binders meeting burning rate, mechanical properties and processing requirements for large booster ...
P. SMITH, H. BANKAITIS
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Investigation of Fracture Criterion for HTPB Propellant
Advanced Materials Research, 2012The fracture toughness of HTPB propellant has a significant rate effect. In order to establish a fracture criterion considering rate effect for HTPB propellant, experiments were conducted at different loading rates. Two kinds of specimens were used to get the fracture properties.
Bo Han, Yu Tao Ju, Chang Sheng Zhou
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A numerical model for AP/HTPB premixed combustion
Applied Thermal EngineeringA simulation model is developed for the premixed combustion of Ammonium Perchlorate (AP) and Hydroxyl-terminated Polybutadiene (HTPB) using a detailed chemical mechanism in gas and semiglobal kinetics in condensed phases. The suggested model considers the burning of the premixed propellant in three distinct phases: a solid phase, a condensed phase ...
Neeraj Kumar Pradhan +3 more
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