Results 211 to 220 of about 38,780 (255)

Nanoparticles for solid rocket propulsion

Journal of Physics: Condensed Matter, 2006
The characterization of several differently sized aluminium powders, by BET (specific surface), EM (electron microscopy), XRD (x-ray diffraction), and XPS (x-ray photoelectron spectroscopy), was performed in order to evaluate their application in solid rocket propellant compositions. These aluminium powders were used in manufacturing several laboratory
GALFETTI, LUCIANO, DE LUCA, LUIGI, SEVERINI, FEBO, MEDA, LUISA MARINA, G. Marra, M. Marchetti, M. Regi, S. Bellucci   +7 more
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Nuclear Rocket Propulsion [PDF]

, 1968
Nuclear rocket engines may be divided into two general classes based on the type of reactor used, i.e., solid-core systems and fluid-core systems. The latter may be further subdivided into liquid-, gas-, and plasma-core engines. Although fluid-core systems have been studied by a number of investigators during the past ten years, no major development ...
C. C. Ross, H. S. McQueen
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Energy Management in Rocket Propulsion

Journal of Propulsion and Power, 2000
The optimal management of the available energy in an ideal single-stage rocket produces a velocity increment that is larger than the value provided by Tsiolkovsky’ s equation. This result is immediately applicable when a limited amount of energy is available from a source that is external to the propellant.
COLASURDO, Guido, L. CASALINO
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Rocket Propulsion with Sparklers

The Physics Teacher, 2006
A fairly well-known demonstration using a sparkler is the following: Bend the wire where you hold it at 90° to the active part, and insert it into the chuck of a drill. Darken the room, ignite the sparkler, and let the drill rotate slowly. A shower of sparks flies off tangent to the circular motion, much like sparks from a rotating whetstone.
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Thermodynamics and rocket propulsion

Journal of Chemical Education, 1969
This paper outlines the application of the principles of chemical thermodynamics to a comparison of the merit of one rocket propellant (fuel plus oxidizer) with that of another fuel-oxidizer pair for liquid-fueled rocket motors.
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Non-Rocket In-Space Propulsion

2009
Now that we’ve examined rocket theory, potential and limitations, we are ready to consider some of the alternatives to this mode of propulsion. If our spacecraft is ground-launched, we might consider a jet as the first stage, where oxygen is ingested from the air instead of carried on board.
Gregory L. Matloff, Giovanni Vulpetti, Les Johnson   +2 more
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The Development of Jet or Rocket Propulsion

The Journal of the Royal Aeronautical Society, 1943
The rocket goes far back into history. In the Thirty Years’ War, it played a conspicuous part in the capture of Philippsburg in 1645. During the Napoleonic Wars, General .Congreve used rocket projectiles to force the fall of Boulogne (1806) and of Copenhagen (1807). The latter town, for instance, received a total of 120,000 rockets. It may be concluded,
V. P. Akimoff, J. Stemmer
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