This Hiller Helicopters XROE-1 "Rotor-cycle"
looks a lot like the
Gyrocopters that seemed to be in every magazine in the 1960s and 1970s, either as
a feature story or in the advertisements in the back. A couple James Bond movies even
featured them as high-tech, futuristic flying machines. The U.S. military experimented
for a while with the personal gyrocopter concept for surveillance and search and rescue
operations, but it never really went anywhere. Remote-controlled drones do a lot of that
work these days. Significant improvements have been made in airworthiness over the years
and now there are many personal
gyrocopters in use around the world - both homebuilt and commercially built.
Gyrenes Pocket Copter
Photos and text by Howard Levy
U. S. Navy reveals the Hiller XROE-1 "Rotor-cycle" made its first flight. XROE-1 is
small, lightweight 1-man helicopter that collapses into small package for ease of transportation
or parachute drop, then can be reassembled by one man in less than 10 minutes.
Like Gyrodyne's XRON-1 which flew in November 1955, Hiller's "Rotorcycle" is powered
by a Nelson 4-cylinder opposed, two-cycle, aircooled engine developing 40-hp. Empty weight
of craft is less than 250-lbs. XROE-1 has single 18-ft diameter main rotor and small
anti-torque tail rotor on tubular boom. Stabilizing horizontal airfoil section (probably
ground-adjustable) is also mounted on boom. The pilot sits on bicycle type seat with
engine at his back. "Landing gear" is a tubular tripod with pilot's foot pedals mounted
on front leg.
Ex-modeler Hiller has apparently made some changes in his rotor system since it appears
that the servo paddles are no longer attached directly to the rotor hub. Servo rotor
is probably free to flap independently of the main hub and the relative motion causes
cyclic pitch changes in the main rotor, which in turn causes hub tilt. "Rotorcycle" was
developed under Navy Bureau of Aeronautics contract for Marines who will use craft for
observation, liaison, and small unit tactical maneuvers.
Posted June 9, 2013