Results 131 to 140 of about 461 (188)

Space Physiology and Technology: Adaptations, Countermeasures, and Opportunities for Wearable Systems. [PDF]

Cyborg Bionic Syst
Khan SUE, Varghese RJ, Kassanos P, Farina D, Burdet E.   +4 more
europepmc   +1 more source

Perspective Approaches to "Trojan Horse" Strategy Development for Combating Bacterial Pathogens. [PDF]

Pharmaceuticals (Basel)
Shleeva M, Kozobkova N, Demina G, Kaprelyants A.   +3 more
europepmc   +1 more source

Foley catheter balloon tamponade for actively bleeding wounds following penetrating neck injury: a systematic review and meta-analysis. [PDF]

Ann R Coll Surg Engl
Tan L, Lim C, Li CX, Kong V, Lee D, Ahn J, Wineberg D, Crawford R, Laher N, Oosthuizen G, Clarke D.   +10 more
europepmc   +1 more source

Near-future rocket launches could slow ozone recovery

Revell L, Bannister M, Brown T, Sukhodolov T, Vattioni S, Dykema J, Frame D, Cater J, Rozanov E, Chiodo G.   +9 more
europepmc   +1 more source

A Computational Tool for the Design of Hybrid Rockets [PDF]

Aerotecnica Missili & Spazio, 2021
AbstractA computational tool able to perform a fast analysis of hybrid rocket engines is presented, describing briefly the mathematical and physical models used. Validation of the code is also shown: 16 different static firing tests available in the open literature are used to compare measured operational parameters such as chamber pressure, thrust ...
Paolo Maria Zolla, Mario Tindaro Migliorino, Daniele Bianchi   +2 more
exaly   +4 more sources

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The regolith rocket—A hybrid rocket using lunar resources

Acta Astronautica, 2021
Abstract The use of lunar hybrid rockets, that connect the Moon surface with a lunar gateway and provide it with resources, are evaluated. Therefore, the composition of lunar regolith and its use for specific rocket subsystems is assessed. In particular, this work evaluates the use of oxygen and aluminum from regolith as oxidant/fuel mixture as well ...
Stoll, Enrico, Härke, Philip, Linke, Stefan, Heeg, Francesca, May, Stefan   +4 more
openaire   +2 more sources

Hybrid rocket instability

29th Joint Propulsion Conference and Exhibit, 1993
The paper provides a brief review of theoretical and experimental studies concerned with hybrid rocket instability. The instabilities discussed include atomization and mixing instabilities, chuffing instabilities, pressure coupled combustion instabilities, and vortex shedding.
B. GREINER, R. FREDERICK, JR.
openaire   +1 more source

Analysis of hybrid rocket combustion

Acta Astronautica, 1980
Abstract The problem involving flow of a turbulent boundary layer with mass injection and combustion is studied to investigate the hydrid rocket combustion. Because of the presence of combustion, the momentum equation is coupled to the energy and species equations.
Cherng, D. L., Tao, C. C.
openaire   +1 more source

Hybrid rocket combustion study

29th Joint Propulsion Conference and Exhibit, 1993
The objectives of this study of 'pure' or 'classic' hybrids are to (1) extend our understanding of the boundary layer combustion process and the critical engineering parameters that define this process, (2) develop an up-to-date hybrid fuel combustion model, and (3) apply the model to correlate the regression rate and scaling properties of potential ...
L. STRAND, R. RAY, N. COHEN
openaire   +1 more source

Transient behavior in hybrid rockets

33rd Joint Propulsion Conference and Exhibit, 1997
The combustion dynamics in hybrid rockets is studied to provide a basic input into transient motor processes, such as ignition, throttling, thrust termination and instability. The model treats the time dependent heat flow into the fuel, with ablation at the surface. The gasification uses a single effective heat to account for surface processes, such as
M. Karabeyoglu, D. Altman, M. Karabeyoglu, D. Altman   +3 more
openaire   +1 more source