Gear Warning

Paul:

Many electronic component wholesalers/retailers have these available.
I've bought Hamlin reed switches and magnets from Digi-Key -
www.digikey.com.

Mike

Paul,

Any of the big electronics suppliers would have them (.com any of the
names below).

Digikey
Newark
Mouser
Jameco

All have good websites and good service.

If you like the garage sale approach I love All Electronics
(allelectronics.com).

Tim

"Paul Remde" wrote in message
news:7KJef.336498$084.184292@attbi_s22...
Hi,

In addition to the audible signal from the 302 - if you have a 303 it
displays a text message which makes it obvious what the issue is.

I like the Tasman approach because a voice message should be able to cut
through all the beeps already going on in the cockpit. I talked to one
user
who installed them in his gliders at his commercial operation. He said the
recorded message was "Lower the Fxxxing Landing Gear!" - in an all out
attempt to get the pilot's attention.

Does anyone have any suggestions for sources of small magnetic reed
switches? I sell mechanical microswitches which I have used in the past
and
like, but I can see the advantages to non-contact switching.

Good Soaring,

Paul Remde
Cumulus Soaring, Inc.
http://www.cumulus-soaring.com

Maybe the hot tip would be to use the sound of something grinding.
In the alarm business, I had a "glass break simulator" that was essentially
a digital recording of breaking glass. That was quite an attention getter.

Tim Ward

Maybe the hot tip would be to use the sound of something grinding.
In the alarm business, I had a "glass break simulator" that was essentially
a digital recording of breaking glass. That was quite an attention getter.

Tim Ward



Or use the sound of the pilot swearing.

"Greg Arnold" wrote in message
newstbff.282$qw.222@fed1read07...


Maybe the hot tip would be to use the sound of something grinding.
In the alarm business, I had a "glass break simulator" that was
essentially
a digital recording of breaking glass. That was quite an attention
getter.

Tim Ward



Or use the sound of the pilot swearing.

Or a Radio Shack piezo buzzer (smoke alarm.) In fact it is so loud that I
mounted it in a sound attenuation box.

It is actuated when flap setting is greater then 40 degrees and gear is up.

Wayne
HP-14 N990 "6F"
http://www.soaridaho.com/Schreder/HP-14/N990/N990.html

One problem with a recorded voice is that it sounds
like background radio chatter and your brain filters
it out (or at least mine does)
Our CFI discovered this the hard way in our brand new
DG1000. luckily landed on soft grass so no damage.

Incidentally the BGA in the UK does not reccomend an
undercarriage warning buzzer.

When focussing on tasks, the human brain filters out signals it decides
are extraneous to the task on hand. This is what causes many vehicle
accidents where people fail to see objects. They are seen, but not
processed in higher areas of the brain.

Exactly the same can happen with audible warnings - they are heard but
not processed.

I had a glider colleague who was famous for gear-up landings and who
had the loudest and most obnoxious gear warning klaxon installed. One
day, we saw him descending on final with the warning blaring, clearly
audible from a hundred yards away. He then proceeded to land gear up,
as usual.

I prefer check lists, but must note I have seen another colleague
return from a flight with gear extended then retract it on final as he
went through his pre-landing checks!

I have yet to land gear up but presume it could happen if I am
distracted or in a hurry.

Mike

Mike the Strike wrote:
I prefer check lists, but must note I have seen another colleague
return from a flight with gear extended then retract it on final as he
went through his pre-landing checks!

Same thing happened to me on my first flight in the first glider I
owned. On pattern entry I went through my pre-landing checklist,
operated the gear handle, opened the spoilers, then heard a load beeping
noise. Closed the spoilers, beeping stopped. It took a fair bit of
contemplation to recognize that the glider might have a gear warning
system. A quick glance at the gear position symbols allowed me to solve
the mystery while still plenty high. I must have forgotten to retract
the gear after release...

Marc

Nigel Pocock wrote:

Incidentally the BGA in the UK does not reccomend an
undercarriage warning buzzer.

As a pilot that has avoided 3 gear up landings because I had a warning
buzzer, I'm curious about the reasoning behind the recommendation.

How about a mechanical warning, like I use on my present glider? It's a
small spring-loaded plastic clamp that is on the gear handle when the
gear is down, then moved to the spoiler handle just before raising the
gear. The clamp location is reversed for landing.

--
Change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

In the current, Fifteenth Edition of Laws and Rules for Glider Pilots of
April 2005 published by the BGA
http://www.gliding.co.uk/bgainfo/doc...ion15final.pdf
in Part 3 Recommended Practices RP26 on page 58 states: -

"UNDERCARRIAGE WARNING SYSTEMS

"RP26. The fitting of systems that warn the pilot of a glider that the
undercarriage is not lowered during the landing approach IS NOT RECOMMENDED.
This is because if such a system is fitted and is activated then the pilot
is likely to attempt to lower the undercarriage during the final stages of
landing. This could result in mishandling the aircraft, so causing an
accident.

"It is also recommended that if the glider is seen on the approach wheel-up,
no attempt is made to warn that pilot, using radio or other means, for the
same reason. The pilot should be allowed to land wheels-up."

I understand that this recommendation was made after accidents where the
warning was considered to be the cause.

W.J. (Bill) Dean (U.K.).
Remove "ic" to reply.


"Eric Greenwell" wrote in message
...

Nigel Pocock wrote:

Incidentally the BGA in the UK does not recommend an
undercarriage warning buzzer.

As a pilot that has avoided 3 gear up landings because I had a warning
buzzer, I'm curious about the reasoning behind the recommendation.

snip

Eric Greenwell
Washington State
USA