Results 81 to 90 of about 3,564 (203)

Prediction of Propellant Electrostatic Sensitivity Based on Small-Sample Machine Learning Models

Aerospace
Hydroxyl-terminated-polybutadiene (HTPB)-based composite solid propellants are extensively used in aerospace and defense applications due to their high energy density, thermal stability, and processability.
Fei Wang, Kai Cui, Jinxiang Liu, Wenhai He, Qiuyu Zhang, Weihai Zhang, Tianshuai Wang   +6 more
doaj   +1 more source

Calculation for Primary Combustion Characteristics of Boron-Based Fuel-Rich Propellant Based on BP Neural Network

Journal of Combustion, 2012
A practical scheme for selecting characterization parameters of boron-based fuel-rich propellant formulation was put forward; a calculation model for primary combustion characteristics of boron-based fuel-rich propellant based on backpropagation neural ...
Wu Wan'e, Zhu Zuoming
doaj   +1 more source

Wire coating containing thermally exfoliated graphite oxide [PDF]

, 2011
A wire coating containing a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 sq m/g to 2600 sq m.sup.2 ...
Abdala, Ahmed, Adamson, Douglas, Aksay, Ilhan A., Prud'homme, Robert K.   +3 more
core   +1 more source

Stable polyurethane coatings for electronic circuits. NASA tech briefs, fall 1982, volume 7, no. 1 [PDF]

One of the most severe deficiencies of polyurethanes as engineering materials for electrical applications has been their sensitivity to combined humidity and temperature environments. Gross failure by reversion of urethane connector potting materials has

core   +1 more source

Electrospray painted article containing thermally exfoliated graphite oxide and method for their manufacture [PDF]

, 2011
A painted polymer part containing a conductive polymer composition containing at least one polymer and a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 sq m/g to 2600 sq m/g, wherein
Aksay, Ilhan A., Korkut, Sibel, Prud'Homme, Robert K.   +2 more
core   +1 more source

Study on the Mechanical Properties of Solid Composite Propellant Used as a Gas Generator

Journal of Aerospace Technology and Management, 2020
A gas generating propellants are used as initiators of liquid rocket propellants turbopumps and have as desired characteristic a high-volume production of low-temperature gas.
Lia Junqueira Pimont, Paula Cristina Gomes Fernandes, Luiz Fernando de Araujo Ferrão, Marcio Yuji Nagamachi, Kamila Pereira Cardoso   +4 more
doaj  

Review of solid propellants for space exploration [PDF]

Solid propellants for space vehicles and spacecraft fuel ...
Hendel, F. J.
core   +1 more source

Metal-polymer composite sensors for volatile organic compounds: Part 1. Flow-through chemi-resistors [PDF]

, 2012
A new type of chemi-resistor based on a novel metal-polymer composite is described. The composite contains nickel particles with sharp nano-scale surface features, which are intimately coated by the polymer matrix so that they do not come into direct ...
Bloor, David, Hands, Philip J. W., Laughlin, Paul J.   +2 more
core   +1 more source

SIMULAÇÃO DE COMBUSTÃO DO POLIBUTADIENO LÍQUIDO HIDROXILADO, PERCLORATO DE AMÔNIO E ALUMÍNIO EM FORMULAÇÕES DE PROPELENTE SÓLIDO COMPÓSITO

Química Nova
The present work presents combustion simulations of hydroxyl-terminated liquid polybutadiene loaded with ammonium perchlorate and aluminum, using Chemkin software and the “Plug Flow” type reactor.
Renata F. Cardoso, Luciene D. Villar, Elizabete Y. Kawachi, Rene F. B. Gonçalves   +3 more
doaj   +1 more source

Preparing oxidizer coated metal fuel particles [PDF]

, 1974
A solid propellant composition of improved efficiency is described which includes an oxidizer containing ammonium perchlorate, and a powered metal fuel, preferably aluminum or beryllium, in the form of a composite.
Shafer, J. I., Simmons, G. M.
core   +1 more source