Results 51 to 60 of about 17,329 (212)

Experimental Investigation of a H₂O₂ Hybrid Rocket with Different Swirl Injections and Fuels

Applied Sciences
Hybrid rockets have very interesting characteristics like simplicity, reliability, safety, thrust modulation, environmental friendliness and lower costs, which make them very attractive for several applications like sounding rockets, small launch ...
Manuel Stella, Lucia Zeni, Luca Nichelini, Nicolas Bellomo, Daniele Pavarin, Mario Tindaro Migliorino, Marco Fabiani, Daniele Bianchi, Francesco Nasuti, Christian Paravan, Luciano Galfetti, Attilio Cretella, Rocco Carmine Pellegrini, Enrico Cavallini, Francesco Barato   +14 more
doaj   +1 more source

Lower-hybrid (LH) oscillitons evolved from ion-acoustic (IA)/ion-cyclotron (IC) solitary waves: effect of electron inertia [PDF]

Nonlinear Processes in Geophysics, 2010
Lower-hybrid (LH) oscillitons reveal one aspect of geocomplexities. They have been observed by rockets and satellites in various regions in geospace. They are extraordinary solitary waves the envelop of which has a relatively longer period, while the ...
J. Z. G. Ma, A. Hirose
doaj   +1 more source

Robust multi-fidelity design of a micro re-entry unmanned space vehicle [PDF]

, 2011
This article addresses the preliminary robust design of a small-scale re-entry unmanned space vehicle by means of a hybrid optimization technique. The approach, developed in this article, closely couples an evolutionary multi-objective algorithm with a ...
Aupoix B., Chapman C. J., E Minisci, Fornberg B., Forrester A. I., Fukunaga K., H Liqiang, M Vasile, Viviani A., White F. M.   +9 more
core   +1 more source

Performance Degradation and Regeneration of Palladium Catalysts for Hybrid Rockets

Aerospace
The renewed interest in hydrogen peroxide-based space propulsion systems has highlighted the persistent issue of catalyst degradation during long-term operation.
Sergio Cassese, Luca Mastroianni, Riccardo Guida, Stefano Mungiguerra, Vincenzo Russo, Tapio Salmi, Raffaele Savino   +6 more
doaj   +1 more source

NASA/FAA general aviation crash dynamics program [PDF]

, 1981
The program involves controlled full scale crash testing, nonlinear structural analyses to predict large deflection elastoplastic response, and load attenuating concepts for use in improved seat and subfloor structure.
Carden, H. D., Hayduk, R. J., Thomson, R. G.   +2 more
core   +1 more source

Properties and Behavior of 3D-Printed ABS Fuel in a 10 N Hybrid Rocket: Experimental and Numerical Insights

Aerospace
In a global landscape where the launch of satellites into space is growing exponentially, there is an increasing demand for propulsion solutions to perform various types of maneuvers.
Sergio Cassese, Veniero Marco Capone, Riccardo Guida, Stefano Mungiguerra, Raffaele Savino   +4 more
doaj   +1 more source

Mission analysis and systems design of a near-term and far-term pole-sitter mission [PDF]

, 2012
This paper provides a detailed mission analysis and systems design of a near-term and far-term pole-sitter mission. The pole-sitter concept was previously introduced as a solution to the poor temporal resolution of polar observations from highly inclined,
Biggs, James, Ceriotti, Matteo, Heiligers, Jeannette, McInnes, Colin   +3 more
core   +1 more source

Time-optimal trajectories to circumsolar space using solar electric propulsion [PDF]

, 2013
The aim of this paper is to explore the capabilities of a solar electric propelled spacecraft on a mission towards circumsolar space. Using an indirect approach, the paper investigates minimum time of transfer (direct) trajectories from an initial ...
Izzo, Dario, Quarta, Alessandro A., Vasile, Massimiliano   +2 more
core   +1 more source

Effect of Varying Design Options on the Transient Behavior of a Hybrid Rocket Motor

Journal of Aerospace Technology and Management, 2014
Hybrid rockets provide compelling features for use in atmospheric and space rocket propulsion. One of the prominent applications of hybrid rockets which foster on its characteristics is the propulsion of micro air launch vehicles. In this paper, a set of
Raed Kafafy, Muhammad Hanafi Azami, Moumen Idres   +2 more
doaj  

Study of the Amplitude of Pressure and Thrust Oscillations in a Lab-Scale Hybrid Rocket [PDF]

, 2000
Hybrid rockets are being studied as a potential replacement for the solid rocket boosters on the NASA space shuttle. One physical characteristic of hybrid rockets that must be understood and overcome is potentially severe pressure oscillations during ...
Alford, Brian, Dunn, Lawrence, Hudson, M. Keith, Patton, Justin, Wright, Ann   +4 more
core   +1 more source