Results 31 to 40 of about 1,875 (170)

Smart Fluid Systems: The Advent of Autonomous Liquid Robotics

Advanced Science, Volume 4, Issue 7, July 2017., 2017
An assessment of existing capabilities that can be leveraged to pursue the topic of “Smart Fluid Systems” or “Liquid Engineered Systems” is provided in this Progress Report. Organic, inorganic or hybrid liquid devices, kept in a fixed volume and protected from a harsh planetary environment, in a biologically inspired vision may be able of changing ...
A. Chiolerio, Marco B. Quadrelli
wiley   +1 more source

Characterisation and thrust measurements from electrolytic decomposition of Ammonium Dinitramide (ADN) based liquid monopropellant FLP-103 in MEMS thrusters [PDF]

, 2017
Although Ammonium Dinitramide (ADN) has been targeted as a potential green monopropellant in future space vehicles, its application potential in Micro-electrical-Mechanical System (MEMS) thrusters or microthrusters have seldom reported in open literature.
Chin, Jitkai, Hung, Yew Mun, Kazi Kabir, Feroz, Rahman, Asad   +3 more
core   +1 more source

Multidisciplinary Design Optimization and Analysis of Hydrazine Monopropellant Propulsion System

International Journal of Aerospace Engineering, Volume 2015, Issue 1, 2015., 2015
Monopropellant propulsion systems are widely used especially for low cost attitude control or orbit correction (orbit maintenance). To optimize the total propulsion system, subsystems should be optimized. Chemical decomposition, aerothermodynamics, and structure disciplines demand different optimum condition such as tank pressure, catalyst bed length ...
Amirhossein Adami, Mahdi Mortazavi, Mehran Nosratollahi, Mohammadreza Taheri, Jalal Sajadi, Martin Tajmar   +5 more
wiley   +1 more source

Numerical Simulation of Interaction between Hall Thruster CEX Ions and SMART‐1 Spacecraft

Mathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015
The interaction between the plume of Hall thruster and the surface of the SMART‐1 spacecraft is investigated by developing a three‐dimensional IFE‐PIC‐MCC code, with the emphasis on the effect of the disturbance force and thermal loading caused by charge exchange ions (CEX) impingement on the surface of the spacecraft.
Kang Shan, Yuchuan Chu, Qingyu Li, Liang Zheng, Yong Cao, Junuthula N. Reddy   +5 more
wiley   +1 more source

Thermochemical Analysis of Hypergolic Propellants Based on Triethylaluminum/Nitrous Oxide

International Journal of Aerospace Engineering, Volume 2014, Issue 1, 2014., 2014
The vacuum specific impulse, density vacuum specific impulse, and solid exhaust products were examined for several propellant formulations based on the pyrophoric material triethylaluminum (TEA) using CEA thermodynamics code. Evaluation of TEA neat and mixed with hydrocarbon fuels with LOX, N2O, N2O4, liquefied air, and HNO3 were performed at ...
Stephen M. Davis, Nadir Yilmaz, Linda L. Vahala   +2 more
wiley   +1 more source

Advances in Hypergolic Propellants: Ignition, Hydrazine, and Hydrogen Peroxide Research

Advances in Aerospace Engineering, Volume 2014, Issue 1, 2014., 2014
A review of the literature pertaining to hypergolic fuel systems, particularly using hydrazine or its derivatives and hydrogen peroxide, has been conducted. It has been shown that a large effort has been made towards minimizing the risks involved with the use of a toxic propellant such as the hydrazine.
Stephen M. Davis, Nadir Yilmaz, Kazhikathra Kailasanath   +2 more
wiley   +1 more source

Multidisciplinary Conceptual Design Optimization of Monopropellant Propulsion System of Nanosatellite [PDF]

فصلنامه علوم و فناوری فضایی, 2011
This paper presents the multidisciplinary design optimization of monopropellant propulsion system of the nanosatellite for planner maneuver. Mass, configuration and internal ballistic equations are derived for any part of propulsion system (thruster ...
M. Nosratollahi, A. h. Adami-Dehkordi
doaj  

Weakly Nonlinear and Numerical Analysis of Auto‐Oscillatory Dynamics in a Solid Propellant Combustion Model

International Scholarly Research Notices, Volume 2013, Issue 1, 2013., 2013
In solid combustion, a planar traveling flame wave may lose stability to oscillatory modes in certain parameter regimes. The loss of stability is commonly achieved through a Hopf bifurcation in which linearly unstable modes grow to fixed amplitudes. This situation has been well studied in models of strictly condensed combustion and has been observed ...
Michael Reardon, Jun Yu, I. Doltsinis, J. R. Fernandez, J. Shen, H. C. So   +5 more
wiley   +1 more source

Experimental Investigation of Hydrogen Peroxide and Nitrous Oxide in a 1-Newton Catalyst-Based Monopropellant Research Thruster

Aerospace
As part of the GreenRAIM activity of the European Space Agency (ESA), an extensive test campaign involving various monopropellants was undertaken. In this work, design and test results of an additively manufactured 1-Newton monopropellant thruster are ...
Florian Merz, Till Hörger, Johan Steelant, Felix Lauck, Christoph Kirchberger   +4 more
doaj   +1 more source

Low thrust monopropellant engine [PDF]

, 1981
The engine has a conventional body and nozzle configuration. The monopropellant fuel is fed into the thruster with dual injection tubes via an injector shell with dual spray jets. The spray jets are positioned generally opposed to each other.
Kuenzly, J. D.
core   +1 more source