Results 181 to 190 of about 4,253 (212)

Combustion of AP/HTPB laminate propellants

37th Joint Propulsion Conference and Exhibit, 2001
The 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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HTPB propellants for large booster applications

7th Propulsion Joint Specialist Conference, 1971
Solid 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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Oscillatory combustion of fine-AP/HTPB propellants

36th AIAA Aerospace Sciences Meeting and Exhibit, 1998
The steady and oscillatory combustion of wide distribution AP/HTPB composite propellants containing coarse AP and fuel-rich, fine-AP/HTPB pocket regions is being investigated experimentally and theoretically. These propellants are of special interest because they are similar to many wide distribution bi-modal tailorable plateau propellants.
S. Hickman, M. Brewster
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Flame structure of ADN/HTPB composite propellants

Combustion and Flame, 2001
Abstract Visual flame characteristics, burning rates, and final flame temperatures for propellants based on ammonium dinitramide (ADN) and hydroxyl-terminated polybutadiene (HTPB) at different HTPB concentrations (3–20%) have been studied at pressures of 0.05 to 0.6 MPa.
Oleg P Korobeinichev, Alexander A Paletsky   +1 more
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Solid Propellants based on ADN and HTPB

47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011
The 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, Sten Andreasson, Mattias Liljedahl, Carl Oscarson, Marita Wanhatalo, Niklas Wingborg   +5 more
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HTPB-based polyurethanes. II. SINs with PMMA

Journal of Polymer Science Part B: Polymer Physics, 2000
Simultaneous interpenetrating networks from poly(methyl methacrylate-co-ethyleneglycol dimethacrylate) (PA) and a hydroxyl-terminated polybutadiene-based polyurethane (PU) were prepared with various hard-segment contents (X) in the PU and different ratios (PU/PA) between the components. The level of the reinforcement, the mechanism of molecular failure,
S. H. Wang, S. Zawadzki, L. Akcelrud
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Aluminum agglomeration of AP/HTPB composite propellant

Acta Astronautica, 2019
Abstract Aluminum (Al) powder agglomeration is one of the main reasons for the degradation in the performance of aluminized solid propellant rockets and so, understanding the combustion behavior of aluminum in solid propellants is of great importance.
Jifei Yuan, Jianzhong Liu, Yunan Zhou, Jianru Wang, Tuanwei Xv   +4 more
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Thermal stability and kinetic of decomposition of nitrated HTPB

Journal of Hazardous Materials, 2009
Nitrated HTPB (NHTPB) is a potential energetic binder to replace the conventional inert binder, HTPB, for the composite solid propellants and plastic bonded explosives (PBXs). The thermal stability of the NHTPB sample with 10% double bonds converted to dinitrate ester group (10% NHTPB) was evaluated by high-pressure differential scanning calorimeter ...
Qingfa, Wang, Li, Wang, Xiangwen, Zhang, Zhentao, Mi   +3 more
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High Performance HTPB-Based Energetic Nanomaterial with CuO Nanoparticles

Journal of Nanoscience and Nanotechnology, 2009
This work describes the first example to demonstrate the enhancement of performances of composite highly energetic materials by mean of employing standard CuO nano-powder as burning rate catalyst in comparison to micro-fillers. The solid composite propellants with CuO microparticles are less stable due to oversensitivity to pressure variations, but the
José Luis, de la Fuente, Gonzalo, Mosquera, Rodrigo, París   +2 more
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Tensile fracture of HTPB based propellant specimens

Materials Science and Technology, 2002
AbstractThe failure of a viscoelastic material, such as solid propellant, is a complex phenomenon with a requirement to address the following two fundamental and complementary aspects in the failure criteria. First, what is the failure criterion for a solid propellant in stress–strain space, and what are the variations in failure data when failure is ...
K. Renganathan, B. S. V. Rama Sarma, B. Nageswara Rao, M. K. Jana   +3 more
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