Results 131 to 140 of about 402 (183)

Environmental impact and sustainability of nanocellulose-based nitrated polymers in propellants. [PDF]

RSC Adv
Ahmad Aljafree NF, Norrrahim MNF, Samsuri A, Wan Yunus WMZ.   +3 more
europepmc   +1 more source

Fractional Viscoelastic Modeling of Creep and Stress Relaxation Behaviors in Polymer-Based Energetic Materials. [PDF]

Polymers (Basel)
Gao D, Tang W, Zhao L, Yuan H.
europepmc   +1 more source

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Aging Characteristics of HTPB Propellant Based on Volume Resistivity

Propellants, Explosives, Pyrotechnics
ABSTRACTHydroxyl‐terminated polybutadiene (HTPB) propellant faces the problem of aging from casting to use. Generally, the aging degree of HTPB propellant is evaluated by a destructive mechanical property test. Therefore, it is necessary to seek a new evaluation method. Electrical performance is a method that can achieve nondestructive testing. However,
Lina Xie, Kaifeng Lin, Wenlong Huo, Xueying Sun, Xuhui Chi, Chengyuan Zhao, Fengtao Zhang, Junzhuo Li, Yulin Yang, Debin Xia, Jian Zhang   +10 more
exaly   +2 more sources

HTPB Propellant Aging

Journal of Spacecraft and Rockets, 1981
Three HTPB propellants, varying in solids loading from 88% to 91%, were selected and developed for evaluation studies including aging. The 88%-solids propellant was verified to fit a previously developed aging model. The aging model has been further successfully applied to the measured mechanical-property aging data for the higher-solids propellants ...
A.G. Christiansen, L.H. Layton, R.L. Carpenter   +2 more
openaire   +1 more source

HNF/HTPB BASED COMPOSITE PROPELLANTS

International Journal of Energetic Materials and Chemical Propulsion, 2002
In a search for new storable high performance propellants for the European Space Agency (ESA), the solid oxidiser Hydrazinium Nitroformate (HNF) was identified as a very promising ingredient for a new storable composite propellant. Two distinct advantages of HNF based propellants over presently used Ammonium Perchlorate (AP) based propellants rvere the
Heijden, A.E.D.M. van der, Keizers, H.L.J., Veltmans, W.H.M.   +2 more
openaire   +2 more sources

Studying for the State Monitoring Time of HTPB Propellant

2016 9th International Symposium on Computational Intelligence and Design (ISCID), 2016
Using 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, Kehai Dong, Hao Wu, Bo Zhang, Liguan Pei   +4 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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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Investigation of Fracture Criterion for HTPB Propellant

Advanced Materials Research, 2012
The 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
openaire   +1 more source