Back Hiller NC-5 / UH-5

Hiller NC-5 / UH-5

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Charles Morgan Evans, e-mail, 10.03.2021reply

There was only one Hiller UH-5. Hiller originally intended to use an engine driven fan inside of a ducted tailboom to direct air out of a side exhaust in place of a tail rotor in order to facilitate yaw control. Stanley Hiller often said to me that it was the limited power of piston engines available at the time that kept this idea from actually working out. The ducted tailboom of the UH-5 "NOTAR" was modified with a more conventional tail rotor. The first "Rotormatic" paddles for stability control were patented by Ed Bennet, chief engineer of Hiller at the time. The rotor control system on the UH-5 and subsequent Hiller UH-12 /360 took quite a bit of inspiration from the yet to be introduced Bell 47, thanks to a visit from Arthur Young to the Hiller works in California during the time both the Hiller and Bell 47 were under development.

E. Speike, e-mail, 16.10.2010reply

I see to my amazement the machine flying /hovering with the pilot being replaced (c.g.) by sandbags. To me that means an aircraft so stable that a normal pilot training would not be necessary. I a a fixed wing pilot but it looks to me that I could fly it right away!

mike1204, e-mail, 29.05.2012reply

The UH-5 was a 2-seat (count them) agricultural experimental helicopter, of which only two were built, with 1947 also claimed as the type's date of first flight. It does feature Hiller's 'Rotomatic Control', a servo-paddle method of cyclic control, push forward on the lever to go back, pull to forward, tilt left or right to bank the opposite way.. A video tour of this machine can be found on YouTube, but specs are hard to come by.

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