A nanofiber is a fiber with a diameter of 100 nanometers or less. The nanofibers due to some special properties are being investigated for a myriad of potential applications in the fields of medicine, electronics and other material sciences. Such…
Federal agencies spend billions of dollars each year to develop, acquire, and build major systems, facilities, and equipment, including fighter aircraft, nuclear waste treatment facilities, electronic baggage screening equipment, and telescopes for exploring the universe. Managing these complex acquisitions has been a long-standing challenge for…
Despite their airborne maneuverability, helicopters, with their skid-or-wheel landing gear, still need a level surface to set down which are scarce in combat and rescue missions. Landing on an uneven surface could them to tip over or the rotor blades…