EC155 incident, SNS, 6 Nov 2013

[JohnDixson]

Tactile Cueing

212, your note reminded of some personal non-success in this area:

You all might recall that Stewart-Hughes got together with the Westland Lynx people, and installed a system for evaluation which, as I recall their brief to SA sounded awfully like the Bell new system. This was when the S-92 was in the design stage. In fact, Stewart-Hughes was proposing what they called carefree handling, and essentially used flight envelope/blade stall algorithms based upon flight test data, tp command appropriate stick forces etc etc. Our project pilot ( Bob Spaulding ) and I lobbied very hard to include that in the S-92 basic flight controls. Unfortunately, it was way ahead of the technical/business criteria for that design, and a good idea went down the tube.

Tactile cueing remains a very valid, and especially with re to FBW, a really intelligent tool to use in keeping the machine where it is intended to be, both by the pilot accomplishing his mission tasks, and the operator/OEM Mfgr, keeping the machine within the design envelope, and within the envelope upon which the component replacement times have been established.

Thanks for the mental push.

John