Abstract: More and more attention has been paid to research on variable geometry turbine engines with the increasing improvement of performance requirements for military turbines. Due to the fixed ...

CARACAS, Venezuela—A U.S. pressure campaign to topple President Nicolás Maduro is stranding Venezuelans around the world, cutting off air links to one of the planet’s least-connected countries and ...

The United States is adding two Caribbean countries to its growing list of travel restrictions as the Trump administration implements sweeping national security and immigration policy changes. In a ...