Boeing A160 unmanned helicopter

Flight testing of Boeing A160T Humingbird unmanned rotorcraft in Victorville, California

Lockheed P-791

The P-791 is an experimental aerostatic/aerodynamic hybrid airship developed by Lockheed-Martin corporation.

Grumman X-29

The Grumman X-29 experimental aircraft, with forward-swept wings and canard control surfaces. It has computerized fly-by-wire control, and the wings are made of composite materials. It first flew in 1984.

DARPA VULTURE unmanned aircraft

DARPA video animation of VULTURE ulta-long-endurance unmanned air vehicle. It can fly for 5 years without refueling and landing on the ground