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January 12, 2018

From the Ray Prouty Archives: Parameter Identification

Since about 1970, a new term has entered the vocabulary of those who analyze helicopter…

January 05, 2018

From the Ray Prouty Archives: Engine Snow Protection

Unexpected technical problems challenge almost every new engineering program. It’s the curse of the “unknown…

December 21, 2017

From the Ray Prouty Archives: Icing and Deicing

In many technical fields, the helicopter lags the airplane by 20 to 30 years. This…

December 08, 2017

From the Ray Prouty Archives: Emergency Maneuvering

John Q. Pilot is scooting along in his helicopter doing contour flying at high speed.…

December 01, 2017

From the Ray Prouty Archives: Antitorque Schemes for Compound

A continuing concern of rotorcraft engineers is how to maintain the vertical-takeoff capability, but fly…

November 24, 2017

From the Ray Prouty Archives: Crosscoupling

Symmetry — or, better put, the lack of it in helicopters — is something pilots…

November 20, 2017

Flashback to February 1968: Dominion Helicopters Company Profile

This article was originally published in the February 1968 issue of R&WI and has been…

November 17, 2017

From the Ray Prouty Archives: Designing for High Speed

In August 1986, Westland Helicopters did what no one had done for almost a decade…

November 03, 2017

From the Ray Prouty Archives: Pitch-Link Loads

“The pitch-link loads are too high!” This dreaded statement — prompted by looking at the…

October 27, 2017

From the Ray Prouty Archives: Landing Gear Choices

When the designer lays out the basic helicopter configuration, he has several options of what…