Paragliding crash

Was that a Stall Warning horn we can hear? I don't know anything about these
things. His problems started right after the horn went crazy. Strike that,
his problems may have started when he strapped that thing on him.
ron



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Posted via a free Usenet account from http://www.teranews.com

"Ron Snipes" wrote in message
...
Was that a Stall Warning horn we can hear? I don't know anything about
these
things. His problems started right after the horn went crazy. Strike that,
his problems may have started when he strapped that thing on him.
ron



--
Posted via a free Usenet account from http://www.teranews.com


I think that is a thermal indicator. They beep faster as you gain altitude
in a thermal.

------------------------------------------
DW

Darkwing wrote:
"Ron Snipes" wrote in message
I think that is a thermal indicator. They beep faster as you gain
altitude
in a thermal.

That is correct. An "audio variometer" might be the term to use.
Glider pilots call it "the audio". The increase in volume and rate
indicates a quickly increasing and sustained rate of climb. He hit a
strong thermal concurrent with the upset that brought him down.

It's not uncommon, though sloppy, for gliders to stall as they pitch up
to enter and circle in a thermal. I have no familiarity with flexible
wing aircraft. I wonder if a 'sharp edged' thermal can momentarily
increase the wing's angle of attack to the stall angle since the delta
between forward speed and the thermal's vertical speed is relatively
small. A strong thermal can easily have a sustained vertical speed of
10knots, and I'm guessing a flex wing aircraft can have a minimum
forward spped of 15knots or less (?).

Ron Snipes schrieb:

Was that a Stall Warning horn we can hear? I don't know anything about these
things. His problems started right after the horn went crazy. Strike that,
his problems may have started when he strapped that thing on him.

Oh yeah. When pedestrians, journalists and other kinds of lower spezies
think aviation is dangerous, they are ignorant. But those same pilots
who know everything about aviation act exactly the same when it comes to
flying apparati they don't know anything about.

BTW, what you've heard is an acoustic variometer (vertical speed
indicator). The increasing beep rate means he's entered a thermal and is
gaining altitude.

Stefan

In article ,
says...
Was that a Stall Warning horn we can hear? I don't know anything about these
things. His problems started right after the horn went crazy. Strike that,
his problems may have started when he strapped that thing on him.
ron

From my gliding experience, that's a vario yer listening to - tells you
by way of sound how much lift yer getting.

--
Duncan