But helicopter-maker Bell has been flying a new experimental craft with a totally different tail rotor, a system that could be safer in some cases, and is also quieter than a traditional tail rotor.

At the rear of the aircraft, the tail rotor is canted at an angle of 20 degrees. Bell Whichever aircraft the Army eventually chooses to go with—and that’s a decision the Army said it will make ...

Rotary-wing maker Bell is at work ... the foldable prop-rotor, gearbox, a turboshaft engine (which runs the prop-rotor) and the turbofan envisioned as residing in the tail of the design to provide ...

However, one Bell helicopter has four small tail fans instead of one big rotor. One of the more interesting ... of an average large helicopter is around 230, according to Radiant Helicopter ...

The NTSB report did not specifically mention the pitch link control, the Bell 429 helicopter tail rotor part the Federal Aviation Administration had published a directive about on the same day ...