rotor mast

rotor pylon

rotor pylon
The pylon that supports the rotor head of a helicopter. Also called a rotor mast.
References in periodicals archive ?
It has rotor blade, a tail, tail boom and a rotor mast.
Some of his most notable accomplishments include: Settled on very favorable terms, a claim for wrongful death against a window manufacturer in a loading/unloading accident; obtained Summary judgment in favor of helicopter manufacturer against claims of defective design and manufacturing of rotor mast in wrongful death case.
Textron System officials described the 'Air Hummer' as a slowed-rotor compound system, where the blades are heavily weighted at the lips and, after vertical take-off and transition to forward flight at around 150 ft when lift is generated by the wings, the rotor mast tilts forward to allow the rotor to fold back to reduce drag.
Subsequent inspection revealed the helicopter's wire cutter located below the main rotor mast severed several strands of wire and a 12-inch piece of the strand remained in the wire cutter.
Normally, a helicopter rotates around the CG, and, since the rotor mast is in line with the CG, you have to be creative to hit yourself with the rotor in-flight.
The transmission, for example, must have required a good deal of redevelopment work: with its tandem-seat configuration, its chin-mounted gun and night vision and targeting equipment in the nose, the design was nose-heavy: this meant that the engines had to be moved aft of the rotor mast to restore the centre of gravity (on the Puma the engines are ahead of the rotor mast).