A DC-8-63F W&B computer does... what?
Good evening,
During a recent trip to a few scrap yards in the US, I bought a "Weight / CG Computer". At least I hope it is such a computer... :ok: The strange thing about this device: - Apparently, you have to dial in the weight in lbs and the CG in %MAC yourself. - The only response that the computer seems to be able to give in return is on an analog scale "500---0---500". Has anyone an idea what the scale is meant to indicate? And how this thing works? The D&O part of the CMM would be great... :cool: A bit more info - the labels on the box show the following data: - "Lockheed Aircraft Servicing Service Company" - "DC-8-63F WT & BAL COMPUTER" - "10061A100" (probably the part number) - "002" (the serial number) - "10/71" probably the manufacture date The box is about 8cm wide, 6cm high, 10cm deep. Apart from a "TEST" pushbutton, there seem to be remains of a three position switch ("OFF", "WT", "CG") on the front. The backside has a bay for a fuse, and a connector for 19 pins (five are unused). Any clues about this device, especially the purpose? :sad: Thanks, J.V. |
Got a picture??
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STAN (Sum Total and Nose)
We had a similar device on VC9 (Vanguard) freighters.
Oleo pressure was sensed from the nose & both main gears. Knowing the cross sectional area of the gear struts allowed STAN to calculate the weight, and by using some simple internal processing, it could calculate the C of G expressed as % MAC. It proved invaluable on at least one occasion when pallets 1 -9 had been loaded 9 - 1 and the C of G was way out of limits. STAN Link Apparently, you have to dial in the weight in lbs and the CG in %MAC yourself. |
PICTURE!
A picture of the "user interface" can be found here...:
http://img26.imageshack.us/img26/4497/dsc015900.jpg Cheers, J.V. |
Same on many B707 freighters...STAN.
Normally, reasonably accurate, IF maintained properly. |
still question marks...
Hmmm... I don^t have access to the "Society of Allied Weight Engineers, Inc." paper.
And I still don^t know how this little thinks helps in day to day ops... :confused: You dial in your best guess of weight and CG, and the device will show something on the scale. How do you interpret the reading? With the help of a load sheet? And then still somebody needs to check out the floor loadings, running loads, cantilevers etc.? Regards, J.V. |
The green mark at +200 is interesting.
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Hi JV,
You dial in your best guess of weight and CG, and the device will show something on the scale. I've not seen one like this before - but I would guess that you dial in your best estimate of weight / C of G (from a load sheet) and see what the meter says. If you are spot on - then it would display centre scale. Belt and braces. |
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