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Bryan Allsop
Joined: 29 Jun 2007 Posts: 78
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Posted: Sun Jun 08, 2008 10:18 am Post subject: Wheels up Warner |
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Hi all Fellow Mono Pilots,
It seems strange that I was showing my wheels up warning device to Bob Hitchcock last weekend. He was saying that other people could be interested , but I was not so sure. It seems that I may have been wrong!
I have developed a simple processor to control the system. With the trim set to less than 65 Knots for landing, a proximity switch puts a +ve signal to the controller. With the wheel up a bright red led flashes. After 30 seconds of no further action a very loud intermitent siren makes itself known. Normally you will have the wheel down within the 30 seconds, so that the siren does not come on. The siren can be temporarily overidden if required.
When the wheel is down and locked, a bright green led comes on, and the red flasher goes off.
Having had my own wheels up experience I have no intentions of having another one. It works well, but installation requires a bit of patience to get it set up for the 65 knot speed. It weighs a few ounces, and you need about 6 cubic inches of space behind the panel.
I have no ambitions to start large scale marketing of it, but if sufficient people were to be interested I do have the resources to knock out some kits. There are no approvals on the device, I don't even know if it needs one since it is not attached to any part of the controls.
Regards to all.
Bryan
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carl(at)flyers.freeserve. Guest
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Posted: Sun Jun 08, 2008 11:53 am Post subject: Wheels up Warner |
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Sounds like a great idea Bryan.
I had always wanted to fit something similar but just havent had the time to think it through - or get round to doing it.
I guess when it happens to you then it focuses the mind.
I would be interested in the details.
BTW how does the system recognise the aircraft is below 65 knots - ie: where is the input taken from?
Carl
G-LABS
[quote] ---
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Bryan Allsop
Joined: 29 Jun 2007 Posts: 78
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Posted: Sun Jun 08, 2008 12:37 pm Post subject: Wheels up Warner |
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Hi Carl. Long time no see.
The trim set up determines the airspeed. The trim motor arm extends with a tiny magnet fixed to it which operates the proximity switch. Finding the correct combination of switch and magnet to give a precise reliable switch was a significant part of the development, which took nearly a year.
Cheers. Bryan
[quote] From: carl(at)flyers.freeserve.co.uk
To: europa-list(at)matronics.com
Subject: Re: Wheels up Warner
Date: Sun, 8 Jun 2008 20:51:01 +0100
.ExternalClass .EC_hmmessage P {padding-right:0px;padding-left:0px;padding-bottom:0px;padding-top:0px;} .ExternalClass BODY.EC_hmmessage {font-size:10pt;font-family:Tahoma;} Sounds like a great idea Bryan.
I had always wanted to fit something similar but just havent had the time to think it through - or get round to doing it.
I guess when it happens to you then it focuses the mind.
I would be interested in the details.
BTW how does the system recognise the aircraft is below 65 knots - ie: where is the input taken from?
Carl
G-LABS
[quote] ---
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