Weapons Boeing's Canard Dragonfly

"Our first flight test objectives were met today," said Clark Mitchell, Boeing Phantom Works program manager for
the CRW prototype. "This is a significant achievement toward validating the new stopped-rotor technology."
Under joint development by Boeing Phantom Works and the Defense Advanced Research Projects Agency
(DARPA), the CRW is a revolutionary aircraft that combines the speed and range of fixed-wing flight with the
flexibility of rotary-wing flight. It also incorporates tip jet propulsion and stopped rotor technologies.

"The most significant objective met was verification that software compensation effectively reduces the rotor control
issue we were having, or cross coupling," he said. The phenomenon of cross coupling was a finding in the mishap
investigation of Ship 1 in 2004 that led to wind tunnel tests for Ship 2 at the Boeing helicopter facility in Philadelphia
earlier this year.
Ship 2 then completed ground checkout testing at the Boeing facility in Mesa, Ariz., where it was configured for
flight. After a flight readiness review, the vehicle was shipped to Yuma where it completed a preparatory "pop up"
flight Nov. 4. The flight lasted only about 30 seconds during which the aircraft stabilized briefly at 16 feet above the
ground and then landed. Success with the initial flight led to the hover flight Dec. 2.

Mitchell said that flight tests are expected to continue into early next year. The flight-test schedule calls for 11
flights. Under the remote control of a pilot in a ground station cockpit, the X-50A Dragonfly will gradually perform
more extensive hover flights, then forward-moving rotary wing flights.
The test program will culminate with the first ever "conversion" from rotary wing flight to fixed-wing flight and back
again to rotary wing flight for landing. The conversion requires the main rotor to stop turning in flight, and lock in
place to become a fixed wing for high speed flight.

Ship 1, the first Dragonfly prototype vehicle, was involved in a flight mishap on March 23, 2004, that led to a joint
investigation by Boeing and DARPA. The findings identified cross coupling of the rotor controls as the main cause
of the mishap. Since then, improvements have been incorporated into Ship 2 that address design issues related to
findings. These include changes such as new rotor torsion springs for increased control power, new flight control
software and a flight data recorder.
The Canard is fully functional and flying our skies as you read this... FRJ