Results 91 to 100 of about 20,668 (233)

From Earth to Orbit: An assessment of transportation options [PDF]

The report assesses the requirements, benefits, technological feasibility, and roles of Earth-to-Orbit transportation systems and options that could be developed in support of future national space programs.
Blond, Edmund, Brill, Yvonne C., Budiansky, Bernard, Cooper, Robert S., Demisch, Wolfgang H., Gavin, Joseph G., Jr., Hawk, Clark W., Kerrebrock, Jack L., Lichtenberg, Byron K., Mager, Artur   +9 more
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Space Chemical Propulsion Test Facilities at NASA Lewis Research Center [PDF]

The NASA Lewis Research Center, located in Cleveland, Ohio, has a number of space chemical propulsion test facilities which constitute a significant national space testing resource.
Calfo, Frederick D., Urasek, Donald C.
core   +1 more source

Establishment and Analysis of a General Mass Model for Solenoid Valves Used in Space Propulsion Systems

Mathematics
The solenoid valve component is the core part affecting the total mass of space propulsion system, and the accuracy of the solenoid valve mass model directly impacts the accuracy of the system mass estimation and optimization design.
Yezhen Sun, Sen Hu, Guozhu Liang
doaj   +1 more source

Specific Impulse and Ignition Delay Time Assessment for DMAZ with Liquid Oxidizers for an Upper Stage Rocket Engine [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
2-Dimethyl amino ethyl azide (DMAZ) has attracted much attention as a suitable liquid fuel replacement for monomethyl hydrazine (MMH) and unsymmetrical dimethyl hydrazine (UDMH) in propellant systems because, in contrast to these fuels, it is ...
Shahram Ghanbari Pakdehi, Bahman Shirzadi   +1 more
doaj  

The hard start phenomena in hypergolic engines. Volume 1: Bibliography [PDF]

A bibliography of reports pertaining to the hard start phenomenon in attitude control rocket engines on Apollo spacecraft is presented. Some of the subjects discussed are; (1) combustion of hydrazine, (2) one dimensional theory of liquid fuel rocket ...
Miron, Y., Perlee, H. E.
core   +1 more source

JANNAF liquid rocket combustion instability panel research recommendations [PDF]

The Joint Army, Navy, NASA, Air Force (JANNAF) Liquid Rocket Combustion Instability Panel was formed in 1988, drawing its members from industry, academia, and government experts.
Klem, Mark D.
core   +4 more sources

Development of Green Bipropellant Thrusters and Engines Using 98% Hydrogen Peroxide as Oxidizer

Aerospace
The need for non-toxic chemical propulsion systems is growing stronger in today’s space sector. One of the possible solutions for next-generation bipropellant systems is using hydrogen peroxide as the oxidizer.
Adam Okninski, Pawel Surmacz, Kamil Sobczak, Wojciech Florczuk, Dawid Cieslinski, Aleksander Gorgeri, Bartosz Bartkowiak, Dominik Kublik, Michal Ranachowski, Zbigniew Gut, Adrian Parzybut, Anna Kasztankiewicz, Jacek Mazurek, Ferran Valencia Bel, Armin Herbertz, Kate Underhill, Dirk Schneider, Andreas Flock   +17 more
doaj   +1 more source

Effect of Correlation on Multi-Engine Rocket Propulsion Systems [PDF]

A matter of great concern in the design and operation of multi-engine rocket propulsion systems is the effect of the premature shutdown of one engine on the vehicle.
Baker, J. R., Breneman, J. E.
core   +1 more source

Design issues for propulsion systems using metallized propellants [PDF]

Metallized propellants are liquid propellants that contain metal particles. These particles are suspended in a gelled fuel or oxidizer. Aluminum is used as the metal additive.
Palaszewski, Bryan, Rapp, Douglas
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A Soviet quasi-market for inventions : jet propulsion, 1932–1946 [PDF]

This paper is about how a command system allocated resources under profound uncertainty. The command system was the Soviet economy, the period was Stalin's dictatorship, and the resources were designated for military research & development.
Harrison, Mark
core   +1 more source