That means the Boomerang can fly nearly straight ahead on a single engine with almost no need to touch the rudders, regardless of which engine quits. And, also unlike other twins in its class, the Boomerang flies almost straight at all speeds with no tendency to roll or yaw. These very desirable flight characteristics derive from the Boomerang's weird-looking asymmetry. The positions of the engines and wings cancel the normal aircraft's asymmetries caused by the similar rotation of left and right propellers. Boomerang gets its brains from a Macintosh PowerBook, which handles GPS navigation and monitors performance.
Controls are mechanical pushrods in a manual flight control system.
Rutan thinks it is fair to compare his Boomerang with a pressurized 6-seat Baron. Another fundamental design innovation is the Macintosh 5300C PowerBook. And if for any reason the PowerBook should fail, a set of miniaturized engine instruments permit adequate backup operation. By using his own money and by building the plane with only the help of wife Tonya and friend Steve Losey, Rutan created a plane that is as much a personal statement as it is a practical flying machine. Screen shot of the Powerbooks charting abilities.