one of the most common methods for controlling and increasing maneuverability of projectiles, especially the ones which move at high altitude and in low density air, is using lateral or reaction jets. the resultant force of the reaction jet is related to the jet and flow parameters. for finding their relation experimental, numerical, and analytical methods have been used. in order to change the...

Electro-hydraulic proportional valve is the core control in many hydraulic systems used agricultural and engineering machinery. To address problem related to large throttling losses poor stability typically associated with these valves, here, beneficial effects of a triangular groove structure on response are studied. A mathematical model pressure compensation system based power-bond graph meth...

in this paper, construction of triplet atmospheric plasma jet using argon, air, oxygen and nitrogen gases is reported. bactericidal effect of the plasma jet is also investigated. to that end, longitudinal geometric configuration for the electrodes was chosen because it would increase the jet length. electrical characteristics, jet length dependencies on the applied voltage and gas flow rate wer...

The anchoring and hooking of ships, bedrock friction biological corrosion threaten the safety stability submarine cables. A hydraulic jet cable laying machine manages to bury cables deep into seabed, effectively reduces occurrence external damage This uses a system realize trenching on seabed. However, has complicated operation high power consumption with requirements mother ship, it is not yet...

an experimental study has been performed to investigate the flow physics of an under-expanded axisymmetric supersonic jet exhausting transversely from a flat plate into a subsonic compressible cross flow. the goal was to study the effects of boundary layer thickness ratio (δ/d) and the jet to free stream dynamic pressure ratio (j) on surface pressure. the resulting measurements distinctly show ...

The problems of subgrade settlement failure and uneven are quite prominent due to hydraulic migration. loess in the natural state has characteristics high strength low compressibility. Composite foundation method is set a certain proportion reinforcement (pile) foundation, so that pile soil jointly bear load, effect compaction displacement method. Based on actual case highway disease Shanxi Pro...

In Vietnam, the solution of designing and constructing deep foundation pits with geology sandy or clayey sand is very difficult, especially in case soil mix mud. some pits, unreasonable treatment causes bottom plug pit to be pushed up not pump a dried. Solving those problems, this article introduces particular study, sealing for no14 Yen Xa drainage works Jet grouted hydraulic barriers. To trea...