Wireless [graveyard spiral]

[cyoung at bbnplanet.com (Chuck Young)]

A graveyard spiral usually occurs when you lose the actual horizon
reference and enter a spiral going down.  The "natural tendency" to
correct a descent is to pull back or up, but this tightens the spiral and
sends you to the graveyard; hence the term.

It's a bad thing.

Chuck Young
GTE Internetworking

On Wed, 21 Jul 1999, Keller, Tim wrote:

> Date: Wed, 21 Jul 1999 13:43:48 -0400
> From: "Keller, Tim" <Tim_Keller at stratus.com>
> To: discuss at Blu.Org
> Subject: RE: Wireless
> 
> Not to be off topic, but what exactly is a "Graveyard spiral" (other than
> the nose pointed down and the engine full throttle at like 500 feet...)
> 
> Thanks
> Tim Keller
> 
> -----Original Message-----
> From: Jerry Feldman {75562} [mailto:gzf at gbr.msd.ray.com]
> Sent: Wednesday, July 21, 1999 11:01 AM
> Cc: discuss at Blu.Org
> Subject: Re: Wireless
> 
> 
> "John Chambers,,,781-647-1813" wrote:
> 
> > I've long thought that wireless  (radio  and/or  IR)  had  a  lot  of
> > potential  advantages.   It  occurred to me again this weekend, while
> > listening to the frantic media coverage of  the  JFK-Jr  story.   Why
> > didn't  they have a precise location for the plane?  GPS equipment is
> > cheap these days, and most planes have it.  
> That is true. Many planes have emergency locator beacons. As a pilot, I
> think I know exactly what happened to JFK Jr. Started to descend to Martha's
> Vinyard, lost his visual reference to the horizon (eg lost site of land, and
> at night there is virtually no visual horizon between ocean and sky). Got
> into a graveyard spiral, did not have the discipline to look at his
> instruments and believe what they were telling him. Instrument rated pilots
> will tell you that a large part of the training is recovering from unusual
> attitudes (kind of like Bzibziak's). A low time pilot may have some
> training, but not the discipline. Vertigo, or Spacial Disorientation is
> something that one must experience to appreciate. Essentially, you don't
> know which end is up. 
> 
> Back on Wireless, maybe we can get some of the wearable guys to come back
> and talk to us with an emphasis on wireless IP.  
> -- 
> Jerry Feldman (HP On-Site Consultant) http://gbrweb.msd.ray.com/~gzf/
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