Abstract:
In at least some aspects, an auxetic structure includes a first sheet defining therein a plurality of a plurality of structural elements projecting from the first sheet, the plurality of structural elements being arranged to provide a negative Poisson's ratio, and a second sheet disposed adjacent the first sheet to define a first internal cavity between the first sheet and the second sheet. In yet other aspects, one or more additional sheets may be advantageously provided to provide a multi-layered structure having auxetic properties.
Abstract:
A system includes a turbine engine having a fuel injector (100). The fuel injector (100) includes fluid ducts (103,105,107), each having a fuel inlet (108,110,212) coupled to a distinct fuel source. The system includes a compressed air source that provides compressed air simultaneously to the fluid ducts (103,105,107), and a convergence point (106) where combined fuel and air streams from the ducts are mixed. The fuel inlets (108,110, 112) are in a parallel flow arrangement such that no fuel from one fuel inlet (108,110,212) is present at another fuel inlet (108,110,212)
Abstract:
One aspect relates to an apparatus having a combustion chamber and a duct in fluid flow communication with the combustion chamber. The apparatus includes at least one opening adapted for delivering a liquid fuel into the duct. The apparatus further includes at least one passage adapted for delivery of a gas upstream of the at least one opening for minimizing the entrance of a fluid other than the gas into the fuel delivery opening.