Shear coaxial injectors are a common injector type for liquid-rocket-propulsion applications and can be found in many oxygen/hydrogen engines. These injectors rely on the shear between an outer lower-density, high-velocity annulus and a higher-density, low-velocity inner jet to atomize and mix the propellants. Because of the dense-jet core, the optical densities of these sprays are high, partic...

A hardware based approach to Fault Emulation independent of the logic emulation system in use has been developed and is presented in this paper. Fault injection into a targetted circuit is made possible with the introduction of additional logic. The stuck-at-fault model is simulated with the method described here, which may also be used for multiple faults and bridging faults [1]. This discussi...

Efficient fuel injection and exhaust gas cleaning systems are needed to promote the development of high-performance internal combustion decrease greenhouse emissions. Electronically controlled enable nearly unlimited control over system components whose operation is limited by inertia moving parts other physical phenomena. In present study, a novel technology for manufacturing magnetic cores wa...

The performance of the rocket is determined by atomization, mixing and combustion process. Injectors are used to control these processes. Suitable method should be followed, so that increased. injector implementation in rockets determines nozzle can achieved. as simple a number small diameter holes arranged carefully constructed patterns through which fuel oxidizer travel. an improved either us...

The purpose of this study was to improve the diagnostics efficiency modern diesel engine injectors with electronic controls. Experimental studies, performed using certified specialized equipment injectors' manufacturers and standard software packages for data analysis, made it possible prove adequacy theoretical research get results that are more accurate. Those contribute development a product...

A sample of 312 heroin users was interviewed on their injection of methadone syrup. Methadone injecting was widespread, with 52% of subjects having injected methadone syrup, 29% in the preceding six months. Males and females were equally likely to report methadone injecting. Forty per cent of current methadone injectors reported weekly or more frequent methadone injecting over the preceding six...