Results 191 to 200 of about 2,083 (236)

Self-Heating Effect of HTPB Propellant during Fatigue

2019 IEEE 10th International Conference on Mechanical and Aerospace Engineering (ICMAE), 2019
In order to better interpret the thermomechanical coupling of solid propellant (in this case, HTPB propellant) under cyclic loading, a series of experiments have been accomplished by monitoring the mechanical and thermal responses of tested specimens under constant room temperature. The results reveal that the area and shape of the hysteresis loop, the
Xin Tong, Issam Doghri, Jin-sheng Xu, Xiong Chen   +3 more
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HTPB‐based polyurethanes for inhibition of composite propellants

Journal of Applied Polymer Science, 1995
AbstractPolyurethanes were synthesized by the reaction of hydroxyterminated polybutadiene (HTPB) and diisocyanates such as toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HMDI), and isophoron diisocyanate (IPDI).
D. C. Gupta, S. S. Deo, D. V. Wast, S. S. Raomore, D. H. Gholap   +4 more
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Development of AP/HTPB based Fuel-rich Propellant for Solid Propellant Ramjet

49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2013
It is well known that reduction of Ammonium Perchlorate (AP) content in composite propellant reduces the burn rate of solid composite propellants. Below a certain level of AP content the propellant does not burn. This paper explores ways to enhance the burn rate of fuel-rich composite solid propellant.
jogesh K. nanda, P. A. Ramakrishna
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Accelerated Aging Tests of HTPB-Based Propellants

2018
In the late twentieth century, liquid and solid propulsion technologies have been integrated into hybrid engines currently apllied in propulsion launch vehicles and missiles. The reaction of polyol (HTPB) and diisocyanate (IPDI) provides the most versatile of the binders in the production of solid propellants due to its ability to withstand high loads ...
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Dynamic mechanical behavior of HTPB dummy composite propellant

Advanced Composite Materials, 1994
The uniaxial dynamic tensile properties of HTPB (hydroxy-terminated polybutadiene) dummy solid composite propellant at high strain rates of about 103 S-1, strongly demanded but never obtained hitherto, was acquired using the KHKK (Kawata-Hashimoto-Kurokawa-Kanayama) one bar method of block-to-bar type established for the purpose of evaluating dynamic ...
Kozo Kawata, Hsing-Liao Chung, Masaaki Itabashi   +2 more
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Structure‐property relationship of HTPB‐based propellants. I. Effect of hydroxyl value of HTPB resin

Journal of Applied Polymer Science, 1993
AbstractComposite 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, V. C. Joseph, L. P. Pandureng, T. Sriram   +3 more
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Shock Loading Studies of AP/AL/HTPB Based Propellants

AIP Conference Proceedings, 1996
The unreacted Hugoniots of three class 1.3 propellants have been investigated by shock compression experiments. Shock waves were generated by planar impact in a 75 mm single stage powder gun. Manganin and PVDF pressure gauges provided pressure-time histories to 200 kbar.
J. M. Boteler, A. J. Lindfors
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Investigation of Aluminum Agglomeration in AP/HTPB Composite Propellants

44th AIAA Aerospace Sciences Meeting and Exhibit, 2006
Aluminum flame conditions, burning surface structure, and surface regression rate of co mposite propellant laminates of aluminum powder, fine and coarse ammonium perchlorate (AP), and hydroxyl -terminated polybutadiene (HTPB) are experimentally investigated. An aluminum matrix consisting of 15 µm Al powder mixed with fine -AP/HTPB (76:24) is sandwiched
J. Mullen, M. Brewster
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Failure of HTPB based composite solid propellants

2020
134
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Thermal decomposition studies of solid propellant binder HTPB

Thermochimica Acta, 1989
Abstract The thermal decomposition of a sample of a commercial composite solid propellant binder, hydroxy-terminated polybutadiene (HTPB), was studied by thermogravimetry-derivative thermogravimetry-differential scanning calorimetry simultaneous techniques (TG-DTG-DSC) applied simultaneously at heating rates varying from 8 to 60° C min −1 ...
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