Results 61 to 70 of about 63,703 (327)

Physico‐Chemical Understanding of Plasticizers Interaction with P(VDF‐TrFE‐CFE) Electroactive Polymer

Macromolecular Materials and Engineering, EarlyView.
This study explores the effects of DNOP plasticizer on P(VDF‐TrFE‐CFE) terpolymers, revealing a strong synergy between chemical structure and physical properties. High TrFE bringing natural flexibility and CFE enhancing the plasticizer retention through theorized halogen bonds, ultra‐soft, crack‐free films of high permittivity and softness are ...
Colin Lesenne, David Audigier, Jean‐Fabien Capsal   +2 more
wiley   +1 more source

Bringing spacecraft into solar-oriented attitude by the measurements of a single-axis angular-rate sensor and an optical solar sensor

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020
The algorithm of the turn of the spacecraft from an initial arbitrary angular position at an arbitrary angular rate to a solar-oriented attitude is investigated.
M. G. Shipov, A. A. Steklova, A. A. Davydov   +2 more
doaj   +1 more source

Mass Spectrometry Structural Proteomics Enabled by Limited Proteolysis and Cross‐Linking

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The exploration of protein structure and function stands at the forefront of life science and represents an ever‐expanding focus in the development of proteomics. As mass spectrometry (MS) offers readout of protein conformational changes at both the protein and peptide levels, MS‐based structural proteomics is making significant strides in the
Haiyan Lu, Zexin Zhu, Lauren Fields, Hua Zhang, Lingjun Li   +4 more
wiley   +1 more source

Modeling of Shutdown Process in Liquid Propellant Rocket Engines [PDF]

فصلنامه علوم و فناوری فضایی, 2014
The effects of liquid propellant rocket engines thrust termination transients are important in achieving the launch vehicle’s desired final velocity with the required precision.
M. Shafiey Dehaj, R. Ebrahimi, H. Karimi, A. Jalali, M. Naderi   +4 more
doaj  

Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He, Guolai Yang, Quanzhao Sun, Shuli Li   +3 more
wiley   +1 more source

Efficiency of aft diffusers in vacuum systems of test benches for high-altitude firing tests of low-thrust liquid rocket engines

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The article presents the results of calculations and experimental studies of a vacuum system with an aft diffuser for high-altitude firing tests of low-thrust liquid rocket engines.
R. N. Galperin, Yu. I. Gulyaev, Yu. S. Ivashin, V. E. Nigodjuk, V. V. Ryzhkov, A. V. Sulinov   +5 more
doaj   +1 more source

Assessment of the Interaction between Ammonium Dinitramide and Isocyanurate Bonding Agents for Application on Technologies of Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
This work investigates the interaction of two isocyanurate‐based bonding agents with ammonium dinitramide: triallyl isocyanurate and 1,3,5‐tris(2‐hydroxyethyl) isocyanurate, which contain alkene and hydroxyl functional groups in their side chains, respectively.
Jessica O. Silva, Josiane R. C. Silva, Kamila P. Cardoso, Milton F. Diniz, Márcio Y. Nagamachi, Luiz F. A. Ferrão   +5 more
wiley   +1 more source

Investigation of critical burning of fuel droplets [PDF]

Steady and unsteady combustion of liquid fuel droplets under rocket engine conditions was analyzed. Emphasis was placed on combustion at elevated pressures and temperatures.
Chanin, S., Faeth, G. M.
core   +1 more source

Computer simulation of high-frequency combustion instability and its supression [PDF]

, 1968
Program for simulation of gas motion illustrates the effects of some of the variables on the combustion chambers of liquid propellant rocket engines.
Bucher, R. E.
core   +2 more sources

Characterization of Structure, Properties, and Energetic Performance of a 1:1 Ammonium Dinitramide‐3,4‐Diaminofurazan Cocrystal

Propellants, Explosives, Pyrotechnics, EarlyView.
Ammonium dinitramide (ADN) and 3,4‐Diaminofurazan (DAF) form a 1:1 energetic cocrystal. We report its crystal structure and spectroscopic signature and evaluate thermal stability, decomposition behavior, hygroscopicity, and combustion properties. Propellant performance calculations benchmark the material against guanylurea dinitramide (GuDN) and ...
Peter Schultz, Uwe Schaller, Thomas Heintz   +2 more
wiley   +1 more source