Simon Ostrach helped advance aviation and space technology through pioneering research in fluid flow, heat transfer, turbine ...

The U.S. Navy has approved the use of buoyancy gliders by all of its destroyers. These unmanned underwater vehicles use wave energy to propel themselves at sea. The Navy probably will use them to ...

A self-sufficient, unmanned airship capable of flying without an engine has successfully completed its first test flight. It is a new concept aircraft that flies by drawing in and expelling air, much ...