What is this flight instrument???
04-27-2010, 06:55 PM
#1
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Joined APC: Aug 2007
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What is this flight instrument???
So I bought this little guy at a flea market to add to my small collection of flight instruments. I liked it because I have no clue what it is....heck it might not even go in an airplane. Its made by Kollsman and has no inputs on the back other than a couple leads (all self contained). If you pull the knob out you can rotate the hands. There's a "second", "minute", and "hour" hand, but why the unusual markings if it is just a clock. And what does the L.H.A.y stand for? If anybody has any ideas, I'd love to hear them. Thanks- Joe
04-27-2010, 09:18 PM
#2
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Joined APC: Jul 2006
Position: XJT CA
Posts: 528
After some quick research, it appears to be an LHA Aries calculator/instrument - used for celestial navigation. LHA is Local Hour Angle.
http://www.usps.org/eddept/n/files/lha_calculator.pdf
Celestial Navigation Basics
http://www.usps.org/eddept/n/files/lha_calculator.pdf
Celestial Navigation Basics
04-29-2010, 06:28 PM
#5
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Joined APC: Jul 2006
Position: XJT CA
Posts: 528
Originally Posted by FreshPilot
I am more fascinated by the manufacturer: Square D. It's amazing what companies used to make aicraft components. Now they just make circuit breakers, panels and the like.
Cool find.
Cool find.
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